Simulation on a New Adsorption Bed about Adsorption Refrigeration Driven by Solar Energy

摘要

Solar refrigeration represents an important application of solar energy due to the excellent matching between the high sun shine and the refrigeration needs. The absorber heated by solar energy contains an activated carbon-ammonia pair. A mathematic model for adsorption bed using activated carbon-ammonia working pair is established in this paper. It is built on certain assumption about the established model and operational condition. The characteristics of flow and heat transfer in fluid are obtained by using of finite control volume method in CFD. The computational results show that new adsorption bed has better coefficient of heat transfer and lager heat transfer field, and also, the thermal conductivity of adsorbent, the flow rate and the temperature of the heat transfer fluid have an important effect on the temperature of bed, which offered the reference foundation for optimizing design of adsorption bed.