Performance analysis on singlechannel residential bidirectional ventilation heat recovery device

Designs a singlechannel bidirectional ventilation heat recovery device to improve the indoor air quality of the room less than 20 m2 without outdoor air system. Experimentally studies the heat transfer characteristics of the device, selects a heat recovery core with relatively higher temperature effectiveness and heat transfer rate, and discusses the ratio of suction and exhaust air. The results show that the ratio of suction and exhaust air should be maintained at around 1.5 in winter and 0.5 to 0.8 in summer.