Dual refrigerant refrigeration system and method

Details Dual refrigerant refrigeration system and method Dual refrigerant refrigeration system and method

2008-07-22

2008-07-22

Tapolcai, William E (Department: 3744)

Refrigeration

With means preventing or handling atmospheric condensate...

Means utilizing heat developed by refrigeration producer

C062S059000, C062S330000, C062S434000

Reexamination Certificate

active

07401473

ABSTRACT:
A dual refrigerant refrigerating system provides a refrigeration cycle in which a primary refrigerant cools a secondary refrigerant in a primary evaporator into a partially frozen state, in which a fusion portion thereof is frozen. The primary refrigerant thus absorbs a secondary latent heat from secondary refrigerant, including a latent heat of fusion required for freezing the fusion portion. Secondary refrigerant is subsequently at least partially thawed, in a secondary evaporator, by re-absorption thereby of secondary latent heat from material proximal to secondary evaporator. Evaporation in secondary evaporator requires at least partial thawing of fusion portion, and thus latent heat of fusion is at least partially re-absorbed by secondary refrigerant, thus increasing secondary heat absorbed from material and facilitating refrigeration thereof. The system also provides defrost and heat reclaim capabilities.

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