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针对冬季太阳能辐射弱且不稳定的特点,提出一种应用于太阳能热泵的分区蓄热水箱,以水泵驱动蓄热水箱循环区与蓄热区的热量传递,并运用热力学原理对水箱循环区与蓄热区的运行状况进行模拟,分析了水箱两区在不同水泵体积流量下的逐时温度变化并与整体式水箱进行对比。结果表明,分区蓄热水箱克服了整体式水箱的热惰性,启动灵活,能在较短时间内达到热泵运行的理想温度,显著提高了系统的性能。
Aiming at the weak and unstable solar radiation in winter, this paper proposes a district heat storage water tank applied to the solar heat pump. The heat transfer between the circulation area and the heat storage area of the heat storage water tank is driven by the pump. And the operating conditions of the thermal storage area are simulated. The time-dependent temperature changes of the two sections of the water tank at different pump volume flows are analyzed and compared with the integral water tank. The results show that the district thermal storage tank overcomes the thermal inertia of the integral tank and can be activated flexibly, which can reach the ideal temperature of the heat pump operation in a relatively short period of time, thereby remarkably improving the system performance.