A study on thermal performance of a novel glazed transpired solar collector with perforating corrugated plate

Abstract Glazed transpired collectors are less efficient in collecting heat due to optical shielding, while unglazed transpired collectors experience large heat losses in areas with high crosswinds. In order to overcome these problems, a novel glazed transpired collector system with non-uniform perforation is proposed in this paper. The system consists of suction and supply ventilation installed beneath the structure and a black perforated corrugated plate. An experimental collector system was built in a laboratory to study its thermal characteristics. The influence of key parameters on the thermal efficiency of the collector was analyzed and the appropriate structural parameters were determined. In addition, the temperature rise, heat exchange efficiency, heat collection efficiency, application efficiency, and collector heat loss coefficient were determined in different conditions. The results showed that the collector provided approximately 6 °C higher temperature rise than a traditional collector, and the heat collection efficiency and heat exchange efficiency were nearly 20% larger compared to a traditional collector. The non-uniform distribution of holes in this ventilation mode can provide greater heat collection efficiency. The heat collection efficiency increased by 0.8%/°C as the inlet temperature decreased. This ventilation system provides greater heat exchange efficiency by increasing secondary heat transfer.