A new type of open-cell metal foam-filled plate heat exchanger based thermoelectric generator system (HE-TEG) is proposed to utilize low grade waste heat. This system can realize waste heat recovery through heat exchange and thermoelectric (TE) power generation. An experimental prototype is...

This paper presented the whole year performance of a novel kind of microheat pipe array (MHPA) flat plate solar water heater. The structure and characters of the novel MHPA-FPC were presented. To quantify the performance of the novel MHPA-FPC SWH, a whole year thermal performance experiment was...

To investigate the impact of defrosting-water retention on the surface of heat exchangers of the air source heat pump (ASHP) performance during frosting–defrosting cycles, an experimental study has been conducted. Testing was carried out in a controlled-environment chamber with ASHP...

A study is presented on the characteristics of the air source heat pump (ASHP) under two kinds of typical mal-defrost phenomena. The definition of the “Mal-defrost phenomena” is put forward, and the possible origins of their occurrence are analyzed. It is concluded that the current defrost...

To quantify the performance drop of the air source heat pump (ASHP) system under a special kind of mal-defrost phenomenon appearing in moderate climate conditions, a field test was conducted for 8days at the initial stage of a heating season in Beijing, China. The mal-defrost was found with the...