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 | | However, in a refrigeration and air conditioning system, there are typically three sources of noise: the compressor (in the typical vapour-compression machine), the fans to force the air around in the vaporiser and the condenser, and the two-phase fluid flow (with its characteristic hissing). |
 | | In a refrigerator, heat flows from the cold load down to the colder vaporiser (in a common refrigerator), where it increases the refrigerant thermal energy, that is converted adiabatically to a much higher temperature, from where heat flows, down the temperature scale again, to the ambient sink. |
 | | There are two working fluids in an absorption refrigerator, the refrigerant (as for a vapour-compression refrigerator), and the carrier, that is the auxiliary liquid that absorbs the refrigerant (in the absorber), is pumped up to high pressure, and releases the refrigerant vapours at the generator. |
| imartinez.etsin.upm.es /bk3/c18/Refrigeration.doc (7525 words) |
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