Experimental Investigation on High Performance Cryogenic Heat Transfer Based upon Natural Circulation Cooling

摘要

A novel cryogenic heat transfer unit is proposed, which combines NCC and CHP together. The unit takes advantages of NCC and CHP, and eliminates the disadvantage of NCC for its low thermodynamic efficiency. Furthermore, it has also the merit of a self-feedback process, which makes the object come back to the objective temperature quickly. In order to verify the principle, a compound system of NCC and CHP was set up and tested. And experimental results are compared with that simply cooled by a NCC or a CHP, which show the promising potential for further applications. An application to the Power MEMS cooling is also presented.