A heat-driven combined cooling and heating system based on thermoacoustic technology
Yupeng Yang, Jiaxin Chi, Zhanghua Wu, Rui Yang, Jingyuan Xu, Limin Zhang, Jianying Hu, Ercang Luo
Abstract
Energy crisis and environmental pollution have become global issues. This study reported a heat-driven combined cooling and heating system based on thermoacoustic technology, which adopted two units of thermoacoustic engine and cooler cores to improve the efficiency. This system can be used as a refrigerator and a heat pump at the same time. Experimental results showed that with a charging pressure of 10 MPa, a high temperature of 300 °C, and a medium temperature of 45 °C, cooling power ranging from 0.61 to 3.89 kW and coefficient of performance varying from 0.08 to 0.30 with low temperature changing from −30 to −5 °C were achieved when the system was working as a refrigerator. Meanwhile, under a low temperature of −30 and −10 °C, a heating power of 7.85 and 14.3 kW with a medium temperature of 45 °C could be achieved corresponding to a coefficient of performance of 1.08 and 1.24 when the system was working as a heat pump. These experimental performances show remarkable advantages and a promising prospect for thermal energy utilization in the future.