Performance of a resorption cycle for recovering the waste heat from vehicles: Fid-Bau Portal

Performance of a resorption cycle for recovering the waste heat from vehicles

Wang, L. W. / Liu, C. Z. / Jiang, L. / Zhao, Y. J. / Wang, R. Z.

Resorption refrigeration is a prospective technique for recovering the waste heat from engines with its high performance and non-existence of liquid refrigerant, which is a safety concern. Five high-temperature and three low-temperature halides are analyzed for general recognition on the performance of a resorption cycle. Considering the instability of the heat source from the exhaust gas and the continuous requirement of cooling, the energy storage function is analyzed for the cycle. Results showed that the working pair of MnCl₂–CaCl₂ is an optimal choice, and the experimental cycle adsorption quantity is as high as 0.49 kgNH₃·kg⁻¹MnCl₂ when the heating, cooling, and refrigerating temperatures are 150°C, 30°C, and 5°C, respectively. The phase change materials 58.1LiNO₃–41.9KCl and 82Ga–12Sn–6Zn are chosen for the storage of waste heat and refrigeration capacity, separately. Analysis shows that 4.19- and 4.73-kg composite adsorbents of CaCl₂ and MnCl₂ will be required for a 3-kW refrigeration system, and the air conditioner could provide cooing for more than 2 h with the energy storage function by phase change materials when the vehicle has stopped.