For example, production of CFCs ended in 1996, but inventory of these refrigerants is still readily available. conventions for use in naming different types of refrigerants. Mineral oil worked well with refrigerants that contained Chlorine but is not miscible with modern HFC and HFO refrigerants. The refrigerants used are specially for cold storage plants and for domestic fridge systems should not affect the quality (i.e. It is classified as an HFC refrigerant and has been banned in some countries due to it’s global warming potential. It is not intended to replace manufacturer guidelines or governmental advice which should be strictly adhered to. Primary refrigerants change states to absorb heat from surrounding areas or substances. The characteristics of some refrigerants make them desirable for use with reciprocating compressors. Foams use mostly 2 types … Ammonia gets readily dissolved in water and become alkaline in nature. These substances must be cooled themselves and redistributed through a system to effectively act as refrigerants. According to the standards ISO 55149 and EN 378.2000, this should apply also in Europe. 3.1). blowing agent in insulation represents approximately 4 times the mass of the refrigerant. CHAPTER 3 Refrigerants 3.1 INTRODUCTION The changes in the selection and use of refrigerants in response to environ - mental issues has accelerated during the last 30 years, a story which can be traced with the aid of a ‘Refrigerant Time Line’ (Fig. • Broad capacity range: welded hermetic compressors can … This classification makes it possible to designate all refrigerants used in a clear and internationally recognized manner by classifying them according to their chemical composition. However, the standard IEC 355.2.20 allows the use of HCs in household refrigerators with refrigerant charges up to 150 g. Some of the widely used cryogenic refrigerants are Helium, Nitrogen, Oxygen, Hydrogen. The use of HCs as refrigerants is confined to Europe, because many other countries elsewhere have banned the use of flammable gas in the presence of the public. The following is a list of refrigerants with their Type/Prefix, ASHRAE designated numbers, … R-22 Refrigerant. As the name suggests, these types of systems transfer heat by mechanically compressing refrigerant into a low-pressure, cold liquid and expanding it into a high-pressure, hot gas. • Broad applications: this compressor type is capable of compressing a wide range of gases such as refrigerant, hydrogen, natural gas, etc. This classification makes it possible to designate all refrigerants used in a clear and internationally recognized manner by classifying them according to their chemical composition. and Safety Classification of Refrigerants”. Naphthene based mineral oils are suitable for refrigeration systems using CFC or HCFC refrigerants and has been the standard oil used for generations. 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