Crossover warm liquid defrost refrigeration system

Details Crossover warm liquid defrost refrigeration system Crossover warm liquid defrost refrigeration system

1999-01-29

2000-08-01

Tanner, Harry B.

Refrigeration

Processes

Defrosting or frost inhibiting

62151, 62185, 62277, F25B 4702

Patent

active

060949252

ABSTRACT:
A crossover warm liquid defrost refrigeration system (10) having a medium temperature side (12) for cooling refrigerated goods and a low temperature side (14) for cooling frozen goods. The medium temperature side has a primary refrigeration loop (16) and a secondary refrigeration loop (18). The low temperature side also has a primary refrigeration loop (46) and a secondary refrigeration loop (48). Further included in the refrigeration system is a low temperature defrost heat exchanger (28) that is connected to the primary refrigeration loop of the medium temperature side and the secondary refrigeration loop of the low temperature side such that coolant from the low temperature side secondary refrigeration loop can be heated by the refrigerant of the medium temperature side, and then transported to the low temperature side refrigerated space heat exchanger (64) to melt any frost formed thereon. Typically, the system further includes a medium temperature defrost heat exchanger (58) that is connected to the primary refrigeration loop of the low temperature side and the secondary refrigeration loop of the medium temperature side such that coolant from the medium temperature side secondary refrigeration loop can be heated by the refrigerant of the low temperature side for defrosting the medium temperature refrigerated space heat exchanger (34).

REFERENCES:
patent: 2657546 (1953-11-01), Smith
patent: 3675441 (1972-07-01), Perez
patent: 4646539 (1987-03-01), Taylor
patent: 5727393 (1998-03-01), Mahmoudzadeh
patent: 5921092 (1999-07-01), Behr et al.

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