초록 ▼

A system for providing refrigeration to a heat load, especially over a larger temperature range and at a cryogenic temperature, wherein pulse tube refrigeration cools a heat transfer medium to provide higher level refrigeration to a refrigeration fluid, and lower level refrigeration is provided to t

A system for providing refrigeration to a heat load, especially over a larger temperature range and at a cryogenic temperature, wherein pulse tube refrigeration cools a heat transfer medium to provide higher level refrigeration to a refrigeration fluid, and lower level refrigeration is provided to the refrigeration fluid using a non-pulse tube system.

대표청구항 ▼

1. A method for providing refrigeration to a heat load comprising:(A) compressing pulse tube gas to produce hot compressed pulse tube gas, cooling the compressed pulse tube gas, and expanding the cooled pulse tube gas to produce cold pulse tube gas; (B) warming the cold pulse tube gas by indirect he

1. A method for providing refrigeration to a heat load comprising:(A) compressing pulse tube gas to produce hot compressed pulse tube gas, cooling the compressed pulse tube gas, and expanding the cooled pulse tube gas to produce cold pulse tube gas; (B) warming the cold pulse tube gas by indirect heat exchange with heat transfer medium to produce cooled heat transfer medium, and warming the cooled heat transfer medium by indirect heat exchange with refrigeration fluid to produce cooled refrigeration fluid at a first temperature within the range of from 20 to 280K; (C) providing refrigeration into the cooled refrigeration fluid to produce cold refrigeration fluid at a second temperature lower than said first temperature and within the range of from 3 to 150K; and (D) warming the cold refrigeration fluid by passing refrigeration from the cold refrigeration fluid into a heat load.