Experimental study on energy storage and defrosting characteristics of cascade air-source heat pump at different outdoor temperatures(2): Energy storage defrosting mode

Experimentally studies the characteristics of energy storage defrosting mode under two outdoor temperature conditions. Analyses the discharge performance of the thermal accumulator and the characteristics of the high and low temperature cycles. The results show that under the two conditions, the suction pressure of the low temperature cycle is higher than 0.236 MPa. The system defrosting performance is stable. The average heating capacity of the high temperature cycle is more than 55.4% of the normal heating capacity. The thermal accumulator can provide a stable heat source.