Secondary loop refrigeration system

Details Secondary loop refrigeration system Secondary loop refrigeration system

1997-10-01

1998-10-13

Tapolcai, William E.

Refrigeration

Display type

62435, A47F 304

Patent

active

058195491

ABSTRACT:
A method and apparatus are provided for using certain hydrofluoroethers (HFEs) as low temperature heat transfer media in secondary loop refrigeration systems. These materials exhibit a low, somewhat linear Temperature Difference Factor over the temperature range of -15.degree. C. to -65.degree. C., making them ideal for use as low temperature heat transfer media. The HFEs of the present invention are nonflammable, nontoxic, environmentally benign, and have a high heat transfer capacity and low viscosity over the required operating temperatures. Furthermore, since these materials have high boiling points and low freezing points, they are not prone to phase changes over the required operating temperatures, and do not require pressurized systems.

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