Air conditioning and refrigeration apparatus utilizing a cryogen

Details Air conditioning and refrigeration apparatus utilizing a cryogen Air conditioning and refrigeration apparatus utilizing a cryogen

1992-11-27

1994-05-17

Rivell, John

Heat exchange

Heating and cooling

Heating and cooling of the same material

165 61, 62 541, 62156, 62239, 62333, F25B 2900

Patent

active

053119274

ABSTRACT:
A refrigeration system associated with a conditioned space to be controlled to a predetermined set point temperature via heating and cooling cycles. The refrigeration system includes a fluid flow path through which a predetermined liquid is circulated. The fluid flow path includes a slush tank and first and second heat exchangers, with cryogen from a supply vessel being expanded into liquid disposed in the slush tank. The first heat exchanger is disposed to condition the air of the conditioned space, and the second heat exchanger is in heat exchange relation with heating apparatus. The first heat exchanger and slush tank are interconnected when the conditioned space requires a cooling cycle, and the first and second heat exchangers are interconnected when the conditioned space requires a heating cycle. Cryogen of the cryogenic cooling apparatus is thus not expended to heat the conditioned space, or for defrosting purposes.

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