| 摘要 |
Apparatus for producing low temperature refrigeration comprising a refrigeration sub-system (12) for circulating a first refrigerant to provide alternately two outputs (36,38) for different time periods including a first output (22,26) at a relatively warm temperature level and a second output (20,24) at a relatively cold temperature level. The sub-system outputs are furnished to a cryosorption pumping circuit (14) comprised of a closed loop conduit for a second refrigerant and connected to a plurality of sorbent beds (16,18) which cause cyclic adsorption and desorption of the second refrigerant material. External conditioning (50,52) utilizing the first refrigerant is used to cause further temperature reduction of said second refrigerant in the closed loop conduit of the cryosorption pumping circuit (14). |
