抄録
A gas circular loop system of CaO/CO2 chemical heat pump was proposed due to improve the thermal performance of the heat pump. The loop system consists of CaO packed reactor, a carbon dioxide storage reactor, heat exchanges and a high temperature pump. The carbon dioxide as working fluid is circulating in this loop. In the design of the loop system, the understanding thermal performance on the CaO packed reactor and choosing of optimum reactor operation condition are important. This study mainly deals with the CaO packed reactor. The carbonation rate of calcium oxide in the packed reactor was discussed as function of the initial reaction temperature and reaction pressure, experimentally. Then, an analytical model for thermal performance evaluation in the packed reactor was developed, and was validated by experimental results. The heat output performance of the loop system was evaluated using the analytical model. The numerical analysis indicated that the proposed system could realize an effective heat recovery and high heat output performance at a constant temperature.
