Dynamic Behavior and Refrigeration Performance in a Heat Driven Type Compact Metal Hydride Refrigeration System

摘要

In the refrigeration field, the research on the refrigerator using waste heat and natural energy attracts attention. Heat driven type metal hydride refrigeration system is one of the candidates. The dynamic behavior of pressure, temperature is strongly related to the metal hydride heat exchanger characteristics, such as the heat transfer mechanism and the geometrical configuration of the metal hydride heat exchanger. And, the resulting heat transfer along with the hydrogen transfer between two connected heat exchanger is the predominant factor in designing in this system. Then, in the present study, an experimental study has been carried out to investigate dynamic behavior and refrigeration performance in coupled metal hydride heat exchangers. And, the amount of hydrogen gas transferable between the paired metal hydrides is measured and the optimum value of the charged initial hydrogen amount, charged metal hydrides mass ratio, volume of gas part and cycle time is found for the maximum hydrogen transfer.