The Development of a Compact Refrigeration System using Metal Hydrides

2nd Report: Study on the Heat Transfer Enhancement of Carbon Fiber mixed MH Heat Exchanger

Abstract

In this paper, an attempt by mixing the carbon fiber into the MH bed was discussed, to enhance the heat transfer performance of the pure MH bed heat exchanger. In order to clarify the mixing effect of the carbon fiber, the effective thermal conductivity of MH bed with and without carbon fiber were measured using an unsteady state method and compared. As the best result, 3 mass % mixing carbon fiber data exhibited 4 times larger than those of the pure MH bed. Finally, after the simple refrigerator model was arranged and the influence of adding the carbon fiber on the real refrigeration effect was analyzed by using a numerical calculation.