太阳热水器—冰箱复合机性能实验研究

EXPERIMENTAL RESEARCH ON THE PERFORMANCE OF A SOLAR THERMAL HYBRID SYSTEM PROVIDING HOT WATER AND REFRIGERATION

对一种新型的可同时供热和制冷的太阳热水器—冰箱复合机装置进行了实验研究 ,采用电加热模拟实验 ,在热水箱内放入 2 2℃的水 ,加入热量 6 1MJ后得到 92℃热水 12 0kg ,和 - 1 5℃冰 9kg ,系统制冷COPsystem 为 0 0 5 91,制冷循环COPcycle为 0 4 1。对现有的热水器—制冰复合机进行改装使之具有真正的冰箱功能后 ,热水箱内放入 2 1℃的水12 0kg ,冷凝温度控制在 30℃左右 ,装置加热输入 5 5MJ热量后 ,结果发现蒸发器中的 4kg蓄冷剂—水都结为 - 2℃的冰 ,用这些冰和制冷剂冷量可使 10 0L冰箱内温度保持低于 5℃达 3天之久。该实验结果为将来利用太阳能作为驱动源进行制冷和供热的吸附式制冷装置的商品化打下了基础。

A solar thermal hybrid system providing hot water and refrigeration was developed.An experimental study with electric heating simulation was carried out.The results show that in the system the temperature of water of 120kg rises from 22℃ to 92℃ and 9kg of ice bar of -1.5℃ is obtained with 60MJ of heat input;the COP system =0.0591,and COP refri-cycle =0.41. After system rehabilitation to match practical operation mode,i.e.the condensing temperature was controlled around 30℃,it is found that the methanol refrigerant with 4kg of water was frozen at temperature of -2℃ with 55MJ of heat input.The cooling capacity of the ice and refrigerant can keep the temperature inside the refrigerator of 100 liter below 5℃ for about three days.This solar refrigeration-hot water hybrid system shows its application prospects after further improvement.