结合太阳能空气集热器的定形相变蓄能地板采暖系统实验研究

EXPERIMENTAL STUDY ON UNDERFLOOR AIR SUPPLY SYSTEM WITH AIR SOLAR COLLECTOR AND SHAPE-STABILIZED PCM

提出了一种与太阳能空气集热器结合的定形相变蓄能地板采暖系统充分利用太阳能。白天,由太阳能空气集热器加热后的热空气通过保温管道输送到相变地板夹层,相变材料(PCM)蓄热;夜间,房间的冷空气进入相变地板夹层,被加热后送入房间,相变材料放热。可行性实验研究表明,此采暖系统安全可靠,能显著提高室内温度,房间各处受热均匀,热舒适性较好,有一定的应用前景。

A new kind of solar energy heating system with shape-stabilized PCM was put forward. It can absorb solar energy in the daytime and release the heat at night in winter. The solar radiation energy was gained by air solar collector, and the heated air was sent to the underfloor space of the room by duct at daytime. Then the thermal energy was stored in the shape-stabilized PCM plates. At night the heat energy stored in the PCM could be released into the room by the ductless air supply. The experiments showed that the thermal comfort degree of solar buildings can be improved when applying shape-stabilized PCM suitably. The conventional space heating energy consumption in winter can be greatly saved.