A refrigerator (colloquially fridge) consists of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from the inside of the fridge to its external environment so that the inside of the fridge is cooled to a temperature below the room temperature. The word refrigerant typically refers to a liquid substance or mixture used in heat pumps or refrigeration cycles. This refrigerant is nontoxic, nonflammable and noncorrosive. Akash and Said (2003) studied the performance of LPG from local market (30%propane, 55% n-butane and 15% isobutene by mass) as an alternative refrigerant for CFC-12 in domestic refrigerator with masses of 50g, 80g and 100g. Pure ammonia gas is highly toxic to people and would pose a threat if the refrigerator were to leak, so all home refrigerators don't use pure ammonia. Domestic Refrigeration In the 1930s, there was a strict division between domestic and commercial repairs. was used as refrigerant. The most commonly used refrigerant in refrigerators is R 134a which is tetrafluoroethylene, which does not deteriorate ozone layers. Refrigerants are used in cars, air conditioners and home appliances and, most notably, refrigerators and freezers. Freon was a brand name for a refrigerant “R-12” by DuPont. It is also an HFC refrigerant. The almost universal refrigerant gas for domestic refrigeration today that is iso-butane based. The heat of the items, to be cooled is carried to the evaporator coils by means of air trapped in the cabinet. The common refrigerant in domestic refrigerators is what freon neon nitrogen or oxygen - trivia question /questions answer / answers This is known to contribute to the greenhouse gas effect. Whilst flammable this gas is used in such low quantities in domestic refrigeration that it is extremely unlikely to be of any risk, even large systems used very small gas charges, normally well under 80g of gas with many, if not most half that or less. A once widely used HCFC refrigerant is a synthetic compound called monochlorodifluoromethane, referred to in the industry as R-22. The most common refrigerants used for air conditioning over the years include: Chlorofluorocarbons (CFCs), including R12. A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle.In most cycles it undergoes phase transitions from a liquid to a gas and back again. Small refrigerated household appliances may also include chilled kitchen drawers, wine coolers, mini fridges, household beverage centers, ice makers that are part of a household refrigerator-freezer, and stand-alone ice makers for household use. Hydrochlorofluorocarbons (HCFCs), including R22. In domestic refrigerators the plate types of evaporator is used … Refrigeration is an essential food storage technique in developed countries. 5) Evaporator or chiller or freezer: The refrigerant at very low pressure and temperature enters the evaporator or the freezer. A refrigerant is the most important component of a refrigerator.