中温太阳能空气集热器应用研究

Application Research on Medium Temperature Solar Air Collector

选用真空管空气集热器、采用相变储热、组成直接式中温热风系统,探索利用太阳能为工业用户提供中低温热空气,作为干燥、烘干、养护等热过程的热源。利用改性乙酰胺作为相变材料进行储热,相变温度为77.9~82.5℃、潜热为240 k J/kg。系统热风温度可达到220℃;实现了稳定的太阳能热风供热系统,可以为末端提供较为稳定的热源。

Using vacuum tube air collector, and phase change materials for thermal storage, a warm wind system of direct type has been made to supply middle or low temperature warm air for industrial users, utilizing solar energy. The warm air can be used in drying, heating and curing process. Modified acetamide was used as phase change materials for thermal storage. It＇s phase transition temperature is 77.9℃ to 77.9℃, the latent heat is 240 kJ/kg. The temperature of the air from the system can reach 220℃. This system can provide stable warm air using solar energy, therefore, can provide stable source of heat for the user.