The design of PCM storage device is also the focus of research. One solution is to optimize the structure, arrangement and number of fins. Because metals have good thermal conductivity, the efficiency of heat conduction can be accelerated by installing metal fins in PCM. For example, Choudhari...
Ideal refrigerant properties, explanations of nomenclature, various types of refrigerant mixtures, ozone depletion factors and global warming impact are given, together with a worked example of a TEWI calculation. An explanation of ‘glide’ is illustrated using a p–H diagram. Excerpts from the ...
Methods and apparatus for a refrigeration heat exchanger section useful in circulating a substantially non-HCFC refrigerant mixture which comprises: a compressor means, an auxiliary condenser, a first condenser, a second condenser, a third condenser, a subcooler and a liquid/gas separator, wherein ...
In response to increasing concerns about environmental degradation, companies started to introduce actions that portrayed their attentiveness to these issu
HFC-23 (trifluoromethane) is generated as a waste gas in the manufacturing process of HCFC-22 which is a gas used as refrigerant and as feedstock, a raw material for other products. It has a global warming potential 11,700 times greater than CO2. The UNFCCC and the Kyoto Protocol list ...
the present device proves advantageous in that (1) the working fluid is air, which is free, safe and non toxic; (2) the need for environmentally damaging refrigerant such as CFC, HCFC and the like is eliminated; and (3) air cycle equipment is extremely reliable, thereby reducing maintenance...
23. The method of claim 21 wherein said contained flammable environment is over molten magnesium and said fluid composition is a cover gas. 24. The method of claim 21 wherein said contained flammable environment is within a refrigeration system and said fluid composition is a refrigerant. 25. ...
The refrigerant regulation is the reason for a tremendous shift of popular HFCs to more environmental-friendly refrigerants in the coming years. At the moment, HFOs seem to be suitable replacements because they have zero ODP and very low GWP. Also, they have compatible working pressures to common...
battery fast charging cooling; CO2 refrigerant; cooling and heating capacity1. Introduction After the Kigali Amendment to the Montreal Protocol, the usage of the HCFC refrigerant was reduced and eventually eliminated, because of the high global warming potential (GWP). At present, the HFC ...
The latest refrigerant, known as Genetron Performax LT, for example, received the R407 standard by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). Further, a ban on the HCFC refrigerant was set, forcing the industry to look to other substances....