F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
327/3
F25B 21/00 (2006.01)
Patent
CA 1260550
A b s t r a c t A method for removing heat from a refrigeration load in a cyclically operating Gifford-McMahon refrigeration apparatus, with which in each cycle a compressed cooling gas from a high- pressure inlet is brought into heat contact with a regenerator cooled during the previous cycle and thereby cooled, the cooling gas is subsequently conveyed to a storage volume via the refrigeration load, the cooling gas is then expanded after closure of the high-pressure inlet by opening a low-pressure outlet and thereby cooled, and the cooling gas is partially conveye by means of a displacer piston from the storage volume to the low-pressure outlet via the refrigeration load and the regenerator, refrigeration capacity hereby being transferred to the refrigeration load and the regenerator hereby being cooled. In order to improve the energy efficiency of such a method it is suggested that the cooling gas be brought into heat contact with an active magnetic regenerator located between the refrigeration load and the storage volume when flowing into the storage volume and also when flowing out of the storage volume, the magnetic substance of the active magnetic regenerator being magnetized when the cooling gas flows into the storage volume but demagnetized when the cooling gas flows out of the storage volume. An apparatus for carrying out this method is also proposed.
519609
Deutsche Forschungs-Und Versuchsanstalt Fur Luft- Und Raumfahrt
Gowling Lafleur Henderson Llp
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