Refrigeration and Air Conditioning - Page 2

Editorial The refrigeration and air conditioning industry has made tremendous progress over the past two decades in reducing the use of ozone-depleting refrigerants. The original targets of the Montreal Protocol, established in 1987 to reduce emissions of ozone depleting substances, are being met and exceeded. Another consequence of these initiatives is that during the 1990s and the early part of the present century, there was considerable uncertainty regarding future refrigerant options. Now a path has started to appear, defined by the global agenda on climate change and global warming. Seen from a global perspective, the tendency is that the industry is moving more and more toward natural refrigerants where this is technologically feasible. Synthetic refrigerants are still likely to play a large role in the refrigeration and air conditioning industry, but this will be in minimal charge systems and with new low GWP substances. Parameters such as efficiency, safety, environmental impact, relatively short atmospheric lifetimes, chemical properties and economy all influence the choice of future refrigerant options. In this issue of Cooling Matters we look at the products and solutions offered by Danfoss for natural refrigerants such as ammonia and carbon dioxide (CO2). We also introduce the newest edition to our range of PSH scroll heatpump compressors and review the products presented at the recent Mostra Convegno exhibition in Italy. We continue with our Fitters Notes series, this time looking at Pressure Controls. Finally, we introduce you to the free on-line training platform, Danfoss Learning. Hydrocarbonproductstype designationchange 2 ExhibitionNews-MostraConvegno 3 PSHheatpumpscrollcompressor rangeextended Ammonia-thenaturalchoice 4 6 Change in type designation for specific hydrocarbon products. Specific refrigeration control products released for use with hydrocarbon refrigerantsaretohavetheletter"E"removedfromthetypedesignation. The products affected by this change are shown in thetableopposite. Thisisonlyachangeinthe typedesignationthespecifications and code numberswillremainthesame. Old type designation EVRE BMLE SGIE SGNE NRVE NRVHE DCLE DMLE New type designation EVR BML SGI SGN NRV NRVH DCL DML Contents CO2refrigerantuseinSupermarkets increasing. 8 FittersNotes-PressureControls 9 DanfossLearning-Thefreeon-line trainingplatform 12 2

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