METHOD AND EQUIPMENT FOR PULSED CHARGE REFRIGERATION

摘要

The invention relates to a method and device for pulsed charge refrigeration of a member (1) from a "Tokamak" (11), that is, a member (1) from a piece of intermittent plasma generation equipment (11). The method uses a refrigeration device (2) that subjects a working fluid such as helium to a work cycle (3) comprising: compression (12), cooling, and decompression (22, 11), as well as heat exchange (32) with the member (1) and heating. The refrigeration power produced by the refrigeration device (2) is increased to a relatively high level when the Tokamak (11) is in a plasma generation phase, and the refrigeration power produced by the refrigeration device (2) is decreased to a relatively low level when the Tokamak (11) is no longer in a plasma generation phase. Said method is characterized in that the increase in refrigeration power produced by the refrigeration device (2) is automatically triggered in response to a signal (S) produced during a step for starting plasma in the Tokamak.