Methods of freezeout prevention for very low temperature...

Details Methods of freezeout prevention for very low temperature... Methods of freezeout prevention for very low temperature...

2006-06-13

2006-06-13

Doerrler, William C. (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S197000, C062S612000, C062S114000

Reexamination Certificate

active

07059144

ABSTRACT:
Refrigerant freezeout is prevented by the use of a controlled bypass flow that causes a warming of the lowest temperature refrigerant in a refrigeration system that achieves very low temperatures by using a mixture of refrigerants comprising at least two refrigerants with boiling points that differ by at least 50° C. This control capability enables reliable operation of the very low temperature system.

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In Refrigeration Volume of ASHRAE Handbook, Refrigerant-Control Devices, Chapter 45.1-45.33 (2002).

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