http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/RSS.ashxRefrigeration and Air Conditioning PagesMon, 09 Jul 2007 16:59:16 +0200http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=1http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=1Industry Pioneers Energy Efciency Technology 2 Floor Heating Provides Comfort and Efciency 5 Learning Comfortably on a California Campus 6 Pressure Control Designed by Service Technicians 8 Efciency Demand Inspires Innovation 9 Staying Warm Through Rocky Mountain Winters 12 Antique Trains Get First Class Treatment 14 MAKING MODERN LIVING POSSIBLE Solutions Vol 4 Iss 25. indd 15205 11528 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=2http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=2Who in the world thinks athletes arent the only ones who deserve personal trainers Success depends on your ability to stay a step ahead of the competition. You have to be faster, smarter and more efficient than the next guy. And nobody knows that better than Ken Fonstad. Hes part of the Danfoss Global Training Team. Whether hes in the field, in the classroom, or hold ing court in real time on the Web, he helps customers lower energy costs and boost productivity. His passion for teaching is surpassed only by a thorough knowledge of Danfoss systems and controls. With experienced professionals like Ken by your side, falling behind is not an option. Please visit us at www. northamerica. danfoss. com to see how thorough training can help you be more productive. Who in your world delivers the dependability that fuels your success We do. Ken Fonstad, training manager Controls Compressors Condensing Units Gear Motors Adjustable Frequency Drives Valves Controllers Oil Pumps Thermostats Danfoss Dependable. Solutions Vol 4 Iss 25. indd 25205 11535 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=3http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=3Vol. 4 Issue 21Danfoss Dependable. CONTENTS Volume 4, Issue 2 Energy eciency is taking priority in North American industry as federal and international regulatory pressure mounts. According to a recent report by the U. S. Energy Information Administration EIA, over the next 20 years U. S. energy demands will increase by 62 percent for natural gas, 33 percent for oil, and 45 percent for electricity. In the meantime, energy costs are an increasing burden for buildings and commercial operations. Manufacturers and sup pliers in Heating, Ventilation, Air Conditioning and Refrigeration HVACR are stepping up to the plate with innovative technologies to conserve energy and increase operating eciency. In this issue of our magazine, read about some challenges and solutions for achieving energy eciency. THE EDITORS, solutionsdanfoss. com www. northamerica. danfoss. com Industry Pioneers Energy Efciency Technology. . . . . . . . . . . . . . . . . . . . . . . 2 Floor Heating Provides Comfort and Efciency . . . . . . . . . . . . . . . . . . . . 5 Learning Comfortably on a California Campus. . . . . . . . . . . . . . . . . . . . . . . 6 Pressure Control Designed by Service Technicians . . . . . . . . . . . . . . . . . 8 Efciency Demand Inspires Innovation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Staying Warm Through Rocky Mountain Winters . . . . . . . . . . . . . . . . . 12 Antique Trains Get Firstclass Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Product News . . . . . . . . . . . 16 Jeff Duncan North America Motion Controls Jennifer Allison Hutchins Corporate Communications Aneta Stephens North America Heating Lisa Tryson North America Air Conditioning and Refrigeration DANFOSS SOLUTIONS is published for the benet of Danfoss customers. Information in the DANFOSS SOLUTIONS may be republished only with permis sion of editorial and always with credit to DANFOSS SOLUTIONS. Comments, suggestions, and contributions are welcome. This publication should not take the place of appropriate technical or legal advice related to companyspecic circumstances. DANFOSS SOLUTIONS does not assume any liability of any kind whatsoever for the use or reliance upon the information contained in this publication. Design by Arista Advertising, Inc. www. Arista Advertising. com Dear Readers, Solutions Vol 4 Iss 25. indd 15205 11545 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=4http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=42Vol. 4 Issue 2Danfoss Dependable. Solutions Has the role of the HVACR industry in energy conservation changed over the years Stephen Yurek he role of HVACR in energy e ciency is growing because there is increasing demand for comfort in peoples lives, from home cooling and heating to food selection in grocery stores. his puts more responsibility on the industry to continue to develop energy ecient equipment and get involved in inuencing energy policy. Solutions When it comes to energy policy how can industry help dene a balanced approach Stephen Yurek Industry is working with environ mental groups and regulatory agencies on solutions for energy eciency. In its infancy, the refrigeration and airconditioning sector was focused on mechani cal improvements, but as demand on energy supply grew and conservation eorts increased, the industry began responding by raising eciency in aircondi tioning and refrigeration equipment. Industry Pioneers Energy Efciency Technology Solutions talks with Stephen Yurek, General Counsel at the Air Conditioning and Refrigeration Institute ARI, about the HVACR industrys relationship to energy efciency. Prior to joining ARI, Stephen Yurek was the vice president of Business Development and Public Affairs at Compass Learning. During his career he has provided guidance in areas of antitrust, association, education, energy, corporate, public interest, and regulatory law. Yurek has participated in administrative and regulatory proceedings before the Federal Energy Regulatory Commission, the Federal Trade Commission, the Federal Communications Commission, the United States Civil Rights Commission and state regulatory agencies in more than 25 states. Solutions Vol 4 Iss 25. indd 25205 11545 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=5http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=5The role of HVACR in energy efciency is growing because there is increasing demand for comfort in peoples lives, from home cooling and heating to food selection in grocery stores. This puts more responsibility on the industry to continue to develop energy efcient equipment and get involved in inuencing energy policy. Vol. 4 Issue 23Danfoss Dependable. ARI brings together manufacturers, even those who are competitors, to work together with environmental groups and government toward a balanced energy policy. We seek a policy that is right for the environment and ensures products will be purchased and used by consumers. If we push e ciency too quickly, for example, prices increase and consum ers will tend to repair old equipment rather than purchase the new more ecient products. he policy has to make sense for consumers, business and for energy conservation. Solutions Has HVACR industry as a whole had signicant impact on energy conservation Stephen Yurek he industry is the driver of technolo gies for energy eciencyfrom the 1960s to today there has been a 60 percent energy eciency improvement in airconditioning and refrigeration systems. Industry mem bers, including ARI members, have joined forces to work on energy eciency solutions to meet new regulations. Together they can work on solutions that would have been cost prohibitive for one company to develop on its own. his occurred with environmental issues, for example, with the Montreal Protocol, when the airconditioning and refrig eration industry pooled resources to develop alternative refrigerants to deal with the phaseout of CFCs. In the same way, industry will work together to shape policy and meet eciency standards for the future. Continued next page Solutions Vol 4 Iss 25. indd 35205 11547 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=6http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=6Solutions How can product developments meet both market demand and regulatory demands Stephen Yurek Developing energy e cient products hasnt been consumer driven, but the industry began making progress on its own, before regulation moved it further along. It is a tough sell to convince consum ers they should pay for e ciency. But there has been a wide range of products avail able to the market for many years, and the refrigeration and airconditioning industry has worked to educate consumers about the advantages of highe ciency equipment. At the same time manufacturers are making equipment more energy e cient, they are also working to meet the latest customer demands in areas like indoor air quality and humidity. Solutions Where is there the greatest energy savings potential in equipment design Stephen Yurek Industry will continue to design products to meet and exceed the latest regulations. For example, as of January, 2006, the federal minimum energy e ciency standard of residential aircon ditioners and heat pumps will increase by 30 percent to meet the minimum SEER 13 rating. h e message is clear that all products using energy will need to meet higher minimum e ciency standards. Because of regulation in the refrigeration market the di eren tiation between lower e ciency products and higher e ciency products is getting more narrow. h e focus on energy savings in HVACR is moving toward improv ing equipment in the niche markets. In the last year, equipment for commercial refrigeration and commercial icemakers, for example, have been targeted by new state e ciency legislation. Solutions In addition to government regulations, are voluntary energy saving programs e ective Stephen Yurek If theyre properly designed, voluntary marketbased programs can be very e ective. But the program has to be marketed well, and easy to understand. It has to relate to individual consumers and their interests. Energy Star is an example. It took many years to educate people about the bene ts of Energy Star, which labels products that meet certain energy e ciency standards. Now when consumers go to buy appliances, many of them automatically look to see if it has an Energy Star label. When consumers and businesses can see the e ect on their pocketbooks, they are more likely to buy into the program. Solutions Has globalization a ected how industry approaches energy e ciency Stephen Yurek In a global marketplace there is a wider view of energy e ciency, and there are major di erences across borders. h e United States and Europe are leading the pack, while a lot of developing countries are beginning to see the need. h ere is a huge market in China for energy e cient equipment, for example, because of the inability to produce enough energy. h e industry will seek markets for energy e cient products they can develop glob ally. ARI works through the International Standards Organization ISO to ensure common international standards. Solutions How important is training for energy e ciency in HVACR Stephen Yurek To get the bene ts of higher e ciency, equipment needs to be installed and repaired by a person who truly understands how it works. Training is key to make equipment reach its e ciency poten tial. ARI runs many programs to promote quality installation of HVACR equipment, from textbooks for schools and technician competency tests to the Partnership for Airconditioning, Heating and Refrigeration Accreditation PAHRA. ARI also initiated the NATE program for experienced HVACR technicians to take certi cation tests. ARI represents manufacturers of more than 90 percent of North American produced central airconditioning and commercial refrigeration equipment. h is interview con ducted exclusively for Solutions is not meant to re ect an endorsement for any particular company or product. Learn more about ARI at www. ari. org Energy Star savings shine brightly In 1992 the U. S. Environmental Protec tion Agency EPA introduced Energy Star as a voluntary labeling progra2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=7http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=7I ts a rude awakening to start the day on an icecold bathroom oor. While traditional heating systems like forcedair may heat up the rest of the house, the bathroom oten remains a chilly experience during the cold months. Although electric heating has long been popular in Europe, today homeowners in the United States and Canada are warming up to electric oor heating in the bathroom and other areas of the house. he system produces a gentle, rising heat that emanates across the oor surfaceit is comfortable, ecient, and totally quiet. Electric oor heating is highly energy ecient, typically costing no more to operate than several light bulbs. In an electric system thermostatically controlled heating cable mats are installed just underneath the oor covering. Danfoss LX reduces installation time and potential errors by preinstalling the heating cable onto the mat. his feature guarantees accurate centertocenter distances, and eliminates hot or cold spots, says Lyle Moroz, manager for Danfoss Electric Heating Division. Comfort starts at the feet Because the heating cables are placed just underneath the oor covering, the system reacts quickly and precisely, and it is regulated by a thermostat so that the oor is never too cold or too hot. Electric heating is ideal for renovations. With a thickness of only 18inch the heat mat and the new oor covering can be installed directly on the top of an existing oor, without problems with features like doorsteps. Danfoss oor heating can be used as the only heating source in the house or in combination with traditional systems for the sole purpose of oor heating. he heating mats work well under any common oor covering including tiles, laminate, solid wood and carpet. Danfoss LX oor heating systems are perfect kitchen and bath renovations. It is extremely versatile and takes only few hours to install and increases the property value, says Moroz. he mats are thin and lightweight and can be installed without for tifying the oor. he entire heating system requires a total oor depth of only 0. 5 inch including tiles. In renova tion projects the mats are installed directly on existing tiles, wood, or concrete oors. Danfoss heating mats are adhesive, which makes them extremely easy to install, as long as the oor is properly insulated and prepped. Danfoss LX oor heating systems provide ground fault GFCI protection and emit no electromagnetic elds EMF. Under normal conditions the electric heating system lasts for the life of the home, and this means no more cold feet. An Electric Concept Vol. 4 Issue 25Danfoss Dependable. Floor heating provides comfort and efciency Solutions Vol 4 Iss 25. indd 55205 11548 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=8http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=8USC facilities management strives for HVAC ef ciency THE UNIVERSITY OF SOUTHERN CALIFORNIA USC in Los Angeles provides an enriching and comfortable environment for learning. h e university is one of the largest energy consumers in southern California. h e universitys Heating, Ventilation and Air Conditioning HVAC systems ensure comfort on two campuses for a student body of 32, 000, a fulltime faculty of 3, 000, and a sta of 14, 400. Here at USC we constantly use di erent disciplines in energy saving devices, says Craig Drown, assistant director for USC facilities management who is also responsible for energy management. We also apply energy management tech nology to improve the buildings systems, reduce costs, and become more e cient, while providing a high level of environmental comfort. To help ensure e ciency of its HVAC system, the campus has integrated Danfoss Graham variable frequency drives VFD into many projects and there are hundreds of drives running on campus today. Among the numerous recent projects are the Turner Logistics Storage, a new campus chilled water thermal storage system, in addition to several retro t and new construction projects. h e campus has also added an underground thermal storage tank with 300 hp pumps and Danfoss drives. USC incorporates drives to provide motor control for various air handling and pumping systems. Because the need for e ciency is foremost on our minds, whether in new construction or remodeling, we apply variable frequency drives, says Drown. Learning Comfortably on a California Campus 6Vol. 4 Issue 2Danfoss Dependable. Solutions Vol 4 Iss 25. indd 65205 11550 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=9http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=9Vol. 4 Issue 27Danfoss Dependable. USC facilities management strives for HVAC ef ciency For maximum e ciency, the campus implements variable air volume VAV systems, in which air ow requirements are prescribed by demand on the system, signaled by thermostats, pressure, air quality sensors, or other monitoring devices. h e system maintains constant pressure by varying air ow generated by the supply and return fans. A VFD control is applied to control the air handling fan speed precisely to main tain the minimum required pressure. Other technologies also ensure the best possible indoor conditions and e ciency. h e Taper Hall building was converted in the retro t to direct digital communication DDC, and VFDs. h e VFD is connected to the AC supply line and converts and controls this energy to supply the fans motor, ensuring that the system is energy e cient o ering motor protection from electrical surges. By varying its output voltage, frequency and current, the VFD controls a stan dard AC induction motor e ciently over a broad operating speed range, elimi nating the need for mechanical control devices. Fans and motors controlled with variable frequency drives are up to 70 percent more e cient than those operated at a constant speed directly across the AC line. h e drives also help keep the noise level of the system down, an important asset to USC. Here at the university we want to keep noise to a minimum, both for our students and for our faculty, as well as our neighbors, says Drown. Tower control h e university also has applied variable frequency drives to its cooling towers for the airconditioning system. h e VFDs control the towers fan motor speed, greatly increasing operating e ciency. In cooling towers, the drive responds to an output signal from a proportional integral derivative PID controller that monitors the temperature of the water leaving the tower. Cooling towers cool the water by evaporation, and air ow through the cooling tower fan accelerates the rate of evaporation to con trol water cooling. Controlling the speed of the fan with a VFD maintains the temperature of the water returning to the chiller. Cooling towers are designed for worst case system demands, which occurs a small percentage of the time. Since the energy consumed by a fan varies by the cube of its speed, having the ability to control its speed over a wide operating range is signi cant. It needs only to operate at the minimum speed necessary to meet the actual demand at any given moment, signi cantly reducing energy consumption, resulting in costs savings and superior system control when com pared to xed or twospeed motor con trol. USC continues to undertake many new building projects and to specify VFD technology into its energy manage ment system. The Department of Energy reports that more ef cient automobiles, computers, buildings, appliances and factories have reduced American energy expenditures by more than 150 billion a year since 1973. Some of this reduction is due to the shift in the economy from manufacturing to services, but at least 75 percent is because of increased energy ef ciency of systems. Solutions Vol 4 Iss 25. indd 75205 11552 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=10http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=108Vol. 4 Issue 2Danfoss Dependable. DANFOSS brought in expert help to design a pressure control that gives contractors and service technicians the features they need. Focus groupsteams of installers and service technicians at every level of expertisespecied features they wanted, then provided ongoing evaluation of the design process for the new KPU control. Danfoss engineers incorporated their ideas. This approach ensured that the new controls are easier to install and troubleshoot, more reliable, and have a longer service life. Current rating for the controls is 24 FLA, 144 LRA, at 120 Vac and 240 Vac. Installation of the KPU is simple and straightforward. Cable entry is from the bottom, aligned with the internal terminal strip, so that no wire bending is required. The control is shipped with a universal replacement bracket and a complete selection of hardware. A robust, heavyduty capillary tube has improved resistant to bending and vibration. The control has a highly visible and easily readable scale, and control adjustments are made with a 14inch service wrench. Control adjustment information, type, and code number are permanently engraved on the body of the control. A number of new features answer the demands of contractor focus groups for ease of system troubleshooting. A single selfretaining screw secures the cover. With the cover removed, the controls contact action is clearly visible, and the control can be nger tip tripped without using tools. The shielded contacts are snapaction, to reduce contact welding and extend ser vice life. High pressure controls, and the high pressure side of dual controls, have a failsafe double bellows system to guard against system leaks. Packaging is robust to withstand the rigors of storage on a service truck, and multiple labels identify the type of control, its specications, and replace ment crossreference information. The wide pressure range makes these controls suitable both for traditional and for todays alternative refrigerants, including R410A and subcritical CO2. Regulating ranges for low pressure KPU range upward from 6 to 73 psig, with differentials as narrow as 6 to 30 psig. Regulating pressures for high pressure are from 100 to 600 psig with differentials at 60 psig xed and 58 psig to 145 psig. Ambient temperature range is from 40F to 122F, or up to 175F for a maximum of 2 hours. A fan cycling version is included in the line. For more information visit www. acr. danfoss. com Pressure Control Designed by Service Technicians PRODUCT HIGHLIGHT KPU pressure and temperature controls Solutions Vol 4 Iss 25. indd 85205 11552 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=11http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=11Vol. 4 Issue 29Danfoss Dependable. Theres little argument. Improved appliance energy efciency will benet everyone. But for appliance manufacturers who must redesign scores of different models to meet requirements that vary widely from state to state, the process of getting there is nothing short of gutwrenching. New Efciency Demands and Danfoss Solutions F irst, residential airconditioning manufacturers faced regulatory demands to improve their products energy eciency by 30. he requirements are being met with the help of control and component suppliers like Danfoss. Now a new challenge faces the industry. Manufacturers of commer cial refrigeration equipment are faced with the same demands. Once again, they look to manufacturers of controls and components for costecient ways to improve the operating eciency of commercial appliances and to decrease total power consumption. he US Department of Energy has been working to obtain legislation requiring greatly improved energy eciency from commercial appliances. hough federal legislation is stalled in Congress, several state governments have passed laws cre ating new minimum energy standards. California has made such standards law, and 15 other states are in various stages of enacting rigorous energy legislation. he California standards apply to many dierent appliances, from washers and dryers to space heaters, air conditioners, and commercial refrigeration equip ment. he most important commercial appliances aected are refrigerators and freezers, ice machines, vending machines, and beverage coolers. Many challenges are before us as we strive to make refrigeration systems more ecient. Each appliance model serves in multiple environments under widely varying widely varying ambient conditions. As ambient temperature increases the unit has to work more to reject heat through the condenser. Units that have restricted airow, or that serve in greasy or dirty environments, will also have to work harder. If the unit is placed outdoors, or if maintenance is not regular, loads on the systems increase. And as these units do more work, they must use more energy than in clean, temperate environments. Danfoss products and technology provide costeffective solutions to help commercial appliance manufacturers comply with regulations requiring increased system efciency Solutions Vol 4 Iss 25. indd 95205 11553 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=12http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=12he restaurant environment is a particu larly onerous one for commercial appli ances their environment includes dirt, grease, and other contaminants. Unlike the surfaces that come into contact with food, the refrigeration system receives infrequent cleaning and maintenance. Access to the refrigerated cabinets is frequent, and every time the door is opened, warm air rushes in or warm product is put in, and the heat has to be removed by the system. Providing ecient solutions under these constantly changing conditions can be dicult. Design engineers have a great many operating range variables to take into consideration. It turns out that there are many ways to make a system more ecient, but some ways are not viable because of their cost. Studies by the Department of Energy DOE have provided guidance on the most cost eective modications, indicating very quick paybacks for compressor and control modications as shown in Table 1, as well as for traditional means of improving eciency such as adding or improving the insulation, etc. . Danfoss has found several possible solu tions that will help commercial appli ance manufacturers increase overall system eciency while also remaining cost ecient see Chart A. Optimal compressor sizing, refrigerant selec tion, and improving airow over heat exchangers can result in signicant savingsup to 20. Adding control modications to those changes controlling condenser and evaporator fans to maximize evaporator cooling can yield additional savings . Changes to the refrigeration components can result in equally costeective results these are shown Chart B Total estimated efciency savings using combined solutoins 70. 0 60. 0 50. 0 40. 0 30. 0 20. 0 10. 0 0. 0 Variable speed compressor TXV High efciency fan motors Fan motor cycling Increase heat exchange Internal airow optimization Combined Solutions Chart A Solutions 30. 0 25. 0 20. 0 15. 0 10. 0 5. 0 0. 0 Internal airow optimization Increase heat exchange Fan motor cycling High efciency fan motors Smaller compressor sized for load Retrot to R134A compressor and TXVSmaller R134A compressor and TXVVariable speed compressor and TXV Savings in Efciency Change in Design Changes can be additive Only one solution per system As new, more stringent policies become law, innovators like Danfoss bring expertise and experience to developing solutions. Danfoss Dependable. Vol. 4 Issue 210 Solutions Vol 4 Iss 25. indd 105205 11553 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=13http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=13Danfoss Dependable. Vol. 4 Issue 211 in red in Chart A. Swapping com pressors is a particularly costeective strategy, whether it involves replacing a standard compressor with a high eciency one or implementing compressor and control solutions that maintain pulldown performance while maximizing energy eciency during normal operation. Examples of these include cycling tandem compressors both on during pulldown and one on in steady state, or replacing the cap tube with an expansion valve and a down sized high eciency compressor getting the most out of the evaporator by closely controlling superheat closely allows the compressor to be downsized. Variable speed solutions are even more ecient. And with todays selflearning variable speed controls, they are very simple to apply and operate. As shown in the Chart B, savings from the various strategies can range from a couple of percent to over 60 of prior energy consumption. Danfoss stands by with not only a toolbox of energy solutions, but also with testing labs to help select the right solution to meet the regulatory requirements, allowing manufacturers to dierentiate their products in the market while maintaining cost competitiveness. One other component that can be added to help increase system eciency is an electronic thermostat. hese have a much tighter ono dierential and a more repeatable temperature sensor, because the sensor is not prone to drit. he thermostat will be able to switch the system on and o with more precision, and much tighter temperature control will result. his in turn shortens compressor run time and energy will be saved. Here in North America, it is oten said, we are far behind Europe and some parts of Asia in becoming responsible about our use of energy, but the situation is changing rapidly. As new, more stringent regulations are made law, Danfoss will bring its expertise and experience to bear, and nd ecient solutions that will provide us with the convenience we want, controlling cost at the same time. Technology Frequency Savings Cost Premium Annual Savings 0. 0782k Wh Payback years High Efciency Compressors1624650. 4 Non Electric Antisweats1467581. 2 Variable Speed Compressors19160772. 1 Condenser Fan ECM Motor2. 724112. 2 Evaporator Fan ECM Motor2. 32492. 6 Hot Gas Defrost6. 383263. 2 Thicker Insulation3. 884155. 5 Liquid Suction Heat Exchanger3. 475145. 5 Table 1 Energy Savings source DOE1996 Efciency Resources California Energy Commission home page www. energy. ca. govindex. html California Energy Commission current regulations, products that meet the current regulations and links to future regulations www. energy. ca. govappliances California Energy Commission case studies that document savings and rationale for the savings www. energy. ca. govappliances documentscasestudies American Council for Energy Efcient Economy ACEEE white paper describing the rationale for energy savings, existing planned regulations on the federal state level www. aceee. orgpubsa051. pdf Energy Star program www. energystar. gov Solutions Vol 4 Iss 25. indd 115205 11554 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=14http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=1412Vol. 4 Issue 2Danfoss Dependable. Bozeman embraces hydronic heating solutions Staying Warm through Rocky Mountain winters LDevelopers and homeowners are realizing that whatever the size of the dwelling, hydronic waterbased heating increases the livability of the home and reduces overall energy consump tion. Experienced heating installers are di cult to nd in Bozeman, but the Danfoss toolbox of products and training can help overcome this obstacle. Typical eld assembled hydronic heating systems consist of a large number of separate plumb ing and electrical components, assembled as part of a complex system. Each system is di erent, which can make them di cult to service. h e homebuilder ot en has to coordinate the services of both a plumber and an electrician. And the integration of eld wiring and the setup of dedicated electronic controls ot en require callbacks. In Bozeman, contractors, engineering consultants, developers and homeowners have discovered that Danfoss o ers a solution in Hydronic heatingprefabricated, preengineered and prewired Zone Control Panels ZCPs. h e panels reduce installation time and provide reliable control. ZCPs are used in applications such as oor warming, add on radiant heating, residential heating, commercial heating, snowice melt, multitemperature systems and hybrid systems. h e panels are a completely packaged ETL Listed UL approved, modular approach to near boiler piping, mixing and zoning in all types of Hydronic heating systems. Located in the heart of the picturesque Rocky Mountains, Bozeman, Montana, is a remarkable community with speci c indoor comfort needs. From cattle ranchers to hightech engineers, the area attracts people who appreciate quality of life in beautiful natural surrounds. It is also a place where temperatures drop low. Because of the long winter season and a limited need for airconditioning in the summer, Bozeman is a strong market for hydronic heating. Solutions Vol 4 Iss 25. indd 125205 11554 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=15http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=15Vol. 4 Issue 213Danfoss Dependable. More work in less time Ferguson Enterprises, a plumbing and heating wholesaler in Bozeman, rst discovered Danfoss panels about three years ago. Branch manager Dave Morrell liked the concept of accomplishing more work in less time. And several local con tracting rms took interest in this new approach to installing Hydronic systems. One of the rst customers to use ZCPs was Summit Mechanical. Following training at the ZCP production center in Calgary, Alberta, Summit Mechanical started ordering ZCP panels and reported positive customer response. In one case, the space required to install a multiple zone system with outdoor reset was reduced by 75 percent, an advantage for todays smaller mechanical rooms, the contractor reported. h e job was completed within a day or two, allowing us to move on to another project more quickly than with traditional installa tions. The word of warmth spreads In the past three years Ferguson has provided contractors with over 200 ZCP panels for both new construction and renovations. Smittys Plumbing, for example, replaced an onsite engineered system, with premanufactured Zone Control Panels on a condominium proj ect, with successful results. It is di cult to control labor costs on a project when compared to a xed appliance price, said Morrell. With the panels, Smittys found, labor costs are reduced. When purchasing a ZCP panel many expenses associated with installing the heating system are reduced or eliminated. h is includes labor, travel, warranty, elec trical, design, liability and, of course, callbacks. From a wholesale standpoint the panels have been an excellent oppor tunity. Morells customers bring plans asking for heat loss calculations and system designs for projects. h e problem was that not everyone would pipe the system the way they were guided through mate rial lists and drawings, he says. I was constantly receiving calls from electri cians asking questions about how to wire the controls. h ese problems disap pear when I specify ZCP Panels. Bozeman has become somewhat of a hot spot for hydronic heating, and the concept continues to spread there and in other parts of the country. When purchasing a ZCP panel many expenses associated with build ing the heat system are reduced or eliminated. This includes labor, travel, warranty, electrical, design, liability and, of course, callbacks. Solutions Vol 4 Iss 25. indd 135205 11557 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=16http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=1614Vol. 4 Issue 2Danfoss Dependable. THE CALIFORNIA RAILROAD MUSEUMS complex of historic buildings must not only ensure preservation of its impressive collections of locomotives and railroad artifacts, but also the comfort of thousands of visitors who come to see exhibitions and attend events. It is a dicult task, since objects need one set of conditions while people may need another. To get the conditions just right, the museum recently reno vated its HVAC system by replacing its existing 360ton, centrifugal chiller with two, 160ton, Mc Quay chillers equipped with Danfoss Turbocor oilfree centrifugal com pressors. he centrifugal com pressors use oilfree magnetic bearings and are designed for 50 to 300ton chiller and rootop aircon ditioner applications. he system ensures that the museum can maintain better indoor temperature control while keeping The Governor Standard, a fortyton woodburning steam locomotive, once proudly hauled freight and passengers across California. Retired in 1895, the beautifully restored train is now one of the favorite dis plays at the California State Railroad Museum in Old Sacramento. The museum preserves the Governor along with many other precious artifacts in a highly controlled environment, thanks to a new chiller system with innovative Danfoss Turbocor compressor technology. SAVING HISTORY WITH HVAC Heating, Ventilation, and Air Conditioning HVAC is a troublesome area for museums and archives as they strive to preserve collections and keep visitors comfort able at the same time. Temperature and humidity control must be precise or they risk losing valuable pieces of history. Experts in museum air quality recommend constant operation of the HVAC system to ensure adequate environmental controls and eliminate sharp spikes, tempera ture uctuations and excess humidity that could cause objects to deteriorate. Turbocor 3000 Antique trains get Oilfree compressors reach new levels of efciency1stclass treatment Temperature and humidity control must be precise or they risk losing valuable pieces of history. Continued next page Solutions Vol 4 Iss 25. indd 145205 11557 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=17http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=17Danfoss Dependable. Vol. 4 Issue 215 down energy costs. he oilfree compres sors provide at least 30 percent more energy eciency than conventional com pressors in the same capacity range the sysetem will save the museum more than 25, 000 in annual energy costs. No messy oil he oilfree compressor technology is a leap in the industry. Like automobile engines, conventional refrigeration com pressors contain many moving parts and rely upon oil for lubrication. he oil oten migrates into various parts of the refrig eration system and reduces the eciency of the system. To combat this problem, the HVAC industry normally uses strat egies such as oilpurgers, refrigerant decontamination systems and piping design techniques. he oilfree compres sors remove the need for these measures. he system eliminates oilmanagement hardware, oil return issues or thermal degradation, reducing maintenance costs. Danfoss Turbocor compressors have only one moving partthe rotor shat impeller assemblybecause they use noncontact, magnetic bearings instead of conventional oillubricated bearings. Since the rotor shat assembly levitates during rotation and oats on a magnetic cushion, oil is not necessary. he bearing sensors feed back realtime orbit infor mation to digitally controlled bearings, and centered rotation is instantaneously selfcorrected and maintained. he compressors are also compact, extremely quiet, and equipped with vari able frequency drive technology VFD for ecient operation. he integrated VFD controls the compressor speed, adjusts to changes in load andor con densing temperature, and is critical to the energy eciency of the compressor. his allows for staging of multiple compres sors and ecient operation whatever the power load. As compressor speed reduces due to lower loads and or condens ing temperatures, energy consumption decreases dramatically. he compressors sot start feature allows low starting power requirements of two amps. Onboard digital controls and power electronics enable eective moni toring, control, selfcorrection and diag nostics. he museum now has an HVAC system that is sure to keep the Governor Standard and the museums other historic locomotives in good shape for genera tions to come. Solutions Vol 4 Iss 25. indd 155205 11558 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=18http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=1816Vol. 4 Issue 2Danfoss Dependable. PRODUCT NEWS Standard Option Panels for VLT 6000 Danfoss Drives now oers the drive and options for 150350 HP, 460 V, VLT 6000 Drives in a stylish, compact enclosure. his establishes a new level of quality and style for all future Danfoss standard option panels. All standard products in this power range will use this panel and will be congurable using the Web Source Congurator, except engineeredtoorder products, which may have dierent enclosures. Presently models are available from 150 through 350 HP at 460 volts, and 110 through 250 k W at 380 volts. Units for 600 volts will be released soon. he variable frequency drive is located in the let bay of the enclosure. A drive disconnect and drive fuses may be located in the drive bay eliminating the need for any additional enclosure for those options. Two heights of enclosures are used, one for 150 and 200 HP, the other for 250, 300 and 350 HP. Additional options are housed in a second enclosure mounted to the right of the drive. his enclosure will house standard control options as 2 and 3contactor bypasses, and dual motor and contactor motor selection controls. For more information contact 18004326367. New Features for all VLT 6000 HVAC Drives Danfoss Drives announces new features for all VLT 6000 HVAC Drives, including a Fireghters Override Mode and Realtime clock. All drives containing sotware version 3. 01 or higher include as standard he Fireghters Override Mode. It is intended for critical situations where the drive must continue to run as much as possible, even if it may cause damage to the drive or other equipment. Fireghters Override Mode is a drive function, but may be used in con junction with bypass. Switching to bypass for remode is standard in the new bypass panels described above, but remains an engineeredtoorder option for smaller bypass panels. he Realtime Clock option board mounts in the control card cassette similar to a Lon Works board. he clock allows 20 programmable time periods, and can be set for daily, weekly or weekend control. It will also timestamp drive faults. he clock contains no battery, but rather a super capacitor that will maintain clock accuracy for at least 120 hours ater drive power has been removed. Most older drives can be retrotted with the clock module. For more information, contact Danfoss North America Motion Controls 18004326367. Solutions Vol 4 Iss 25. indd 165205 11558 PM2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=19http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=19Thermostatic Expansion Valves Replace Capillary Tubes In Commercial Refrigeration Current legislation and regulations requiring increased energy e ciency are driving an accelerating trend today toward the use of thermostatic expansion valves rather than capillary tubes in com mercial OEM refrigeration units, including vending machines, refrigerators, freezers, and glass door merchandisers. In response to growing demand, Danfoss is introducing a line of economical small thermostatic expansion valves TXVs, types TD1 and TDE1. TD valves are available in capacities from 0. 15 to 1. 5 TR R22, internally or externally equalized, for refrigerants R134a, R22, and R404A. Valves can be supplied for other refrigerants on OEM demand. h e valves are o ered in angleway and straightway brazein versions. Appropriate ori ce and connection sizes are available. h e TD power element is laser welded. Laser welding requires much less heat input than plasma welding or conventional welding, therefore extending the life of the diaphragm and enhancing regulation properties. h ese valves have a pat ented selfaligning doublecontact bulb that secures with a single strap. h ey can be ordered with a universal range N charge, or with MOP charges for various pressures and refrigerants. h ey are supplied with xed superheat setting. Both bleed and nonbleed versions are available. For more information, contact 4109318250 Clickon Solenoid Coils A new series of solenoid coils from Danfoss simply click onto valve armatures without the need for external fasten ing hardware. h at key advantage simpli es mounting and maintenance as compared with traditional coil attachment that requires cap, label, and nut that are easily lost while working with them in the eld. Equipped with either a conduit boss or junction box, the fully encapsulated coils mount using an internal clickon fastening system and have no external retaining hardware. h ough coils are mounted without tools, the internal clickon fastening provides secure attachment that will not vibrate loose, even in extreme environments. h e coils are designed to operate in aggressive environments where there can be wide humidity and temperature variations. h e fully encapsu lated coils are well suited to applications in commercial refrig eration and aircondi tioning. Clickon coils are available for the entire range of nor mally open and nor mally closed Danfoss solenoid valves. Voltages o ered are 24Vdc to 240Vac in 50, 60, or 5060 Hz versions. Holding current is 14W for ac versions and 20W for dc versions. Coils are designed for maximum opening pressure di er ential MOPD of up to 350 psig. Danfoss coils, valves, and other refrigeration and air conditioning controls and components, are produced in factories certi ed under ISO 9001 and ISO 14001, assuring high quality standards throughout the design and manu facturing process. For more information, contact 4109318250 New Danfoss LXTM oor heating system h e new Danfoss LX product line provides a higher level of quality and installation ease. It is supplied in a mat format, and can be rolled out quickly on the sub oor or even on top of an existing oor in a renovation situation. h e mat is made of a durable berglass material, which can withstand the rigors of the job site, but is still easily cut to allow it to work around obstacles like toilets, sinks and cabinets e ortlessly. Unique to the industry, the mat is selfadhesive, so that separate adhesives or doublesided tape is not longer required for installation. h is feature removes an entire step from the installation process. h e Danfoss LX thermostat provides aesthetic appeal and high functionality. h e ther mostat has dual voltage capabilities 120V or 240V, fourevent sevenday program ming, and builtin GFCI functionality. Danfoss LX comes with a nonprorated 10year warranty on the heating mats and a two year warranty on the electronic thermostat. For more information, contact 9056766000 Vol. 4 Issue 217Danfoss Dependable.2007-07-09T16:59:16+02:00http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=20http://danfoss.ipapercms.dk/refrigerationandairconditioning/ra/solutions/us/solutionsvol422005/?Page=20April International Association of Refrigerated Warehouses IARW April 29 May 5, 2005Hyatt Regency Lake, Las Vegas, NV. www. iarw. org SEPTARETA April 2930, 2005haddeus Stevens College of Technology, Lancaster, PA May Food Marketing Institute FMI May 13, 2005Mc Cormick Place, Chicago, IL. www. fmi. org Climate Tech 2005 Annual Climate and Ozone Award May 4, 2005 Sotel Hotel, Washington, DC F. W. Webb Vermont Expo 2005 May 5, 2005 100 700 pm Barre Auditorium Seminary Hill, Barre City, VT NEFI New England Fuel Institute May 1011, 2005John B. Hynes Veterans Memorial Convention Center National Restaurant Association NRA May 2124, 2005 Mc Cormick, Place, Chicago, IL. www. restaurant. org National Association Oil Heating Service Managers, Inc. Convention Trade Show May 2425, 2005 Hershey Convention Center, Hershey PA. CALENDAR OF EVENTS Please mention that you read about the event in Danfoss Solutions HOW TO CONTACT DANFOSS BALTIMORE, MD 7941 Corporate Drive Baltimore, MD 21236 4109318250 Fax 4109318256 www. acr. danfoss. com www. danfoss. comusic Refrigeration Air Conditioning Industrial Controls Components for Oil Burners Heating Controls GLENS FALLS, NY Danfoss Flomatic Valves 15 Pruyns Island Drive Glens Falls, NY 12801 8008332040 Fax 8003143155 EMail omaticomatic. com www. danfossomatic. com Water Controls LOVES PARK, IL Danfoss Drives 4401 N. Bell School Road Loves Park, IL 61111 8156398600 Fax 8156398000 www. namc. danfoss. com Drives Industrial Sales MILWAUKEE, WI 8800 W. Bradley Road Milwaukee, WI 53224 4143558800 Fax 4143556117 www. namc. danfoss. com www. na. water. danfoss. com Danfoss Graham HVAC Danfoss Water Wastewater Nessie Water Hydraulics MISSISSAUGA, ONT 7880 Tranmere Drive Mississauga, ON L5S 1L9 Canada 9056766000 Fax 9056760279 www. danfoss. ca Heating Controls Motion Controls SOMERSET, NJ Danfoss Bauer 31 Schoolhouse Road Somerset, NJ 08873 1212 7324698770 Fax 7324698773 www. danfoss. comdrivesus Gearmotors For More Information To nd out more about Danfoss North America, contact us viaemail at solutionsdanfoss. com Keep updated on all the latest news about Danfoss products and your industry at www. northamerica. danfoss. com Log on today Solutions Vol 4 Iss 25. indd 45205 11525 PM2007-07-09T16:59:16+02:00