Abstract
In this paper, because the effective thermal conductivity of MH alloy bed is extremely low (about 1W /m•K), the mixing the carbon fiber into the MH bed is used to enhance the heat transfer performance. In addition, it is clear that the effective thermal conductivity of MH-2 alloy bed is higher than that of MH-l alloy. In order to clarify the effect of mixing carbon fiber, the effective thermal conductivity of the MH alloy bed with and without carbon fiber are measured and compared. Mixing carbon fiber is useful method for MH alloy's heat transfer enhancement. And, using the calculation model based on the one dimensional thermal diffusion equation and the demonstrational refrigeration system, the effects of driving conditions, heat source temperature, middle cooling temperature and initial system equilibrium pressure are discussed.
Finally, using the above calculation model, the influence of adding the carbon fiber on the refrigeration performance is analyzed.
