Experimental study on factors influencing exchange efficiency of air-to-air energy recovery equipment

 According to the national standard GB/T 21087—2007 Air-to-air energy recovery equipment, experimentally studies the key factors influencing the energy efficiency, and analyses the influences of the air flow rate, power input and net outdoor air exchange rate on the exchange efficiency. The result indicates that for one energy recovery device, the exchange efficiency goes down with the raise of air flow rate and net outdoor air exchange rate, and for the energy recovery device with fan, the power input of the motor of the outdoor air fan has an negative influence on the exchange efficiency in cooling processes while positive influence in heating processes.