中文摘要：

对一种新型的可用于太阳能中低温采暖系统的混凝土储热块的充放热特性进行实验研究。结果表明：当传热工质的人口温度为60～80℃时，混凝土储热块的平均温度可达48．5℃。混凝土储热块放热过程中，当传热工质流量为0．15m3／h时，流体进出口温差最大可达6℃。通过实验验证了在太阳能采暖系统中，可利用混凝土储热块的传热特性进行热量存储，提高可再生能源的利用率。

英文摘要：

A novel solar heating system combining the concrete module as the thermal energy storage was presented. The charging and discharging performances of concrete thermal storage block were investigated based on a series of experiments. The experimental results show that the average temperature of concrete thermal storage block can reach 45.5 ℃ when the inlet water temperature is 60-80 ℃. The largest water temperature difference between inlet and outlet is 6 ℃ while flow rate of heat working fluid is 0.15 m3/h in the discharging process. The experiment results verify that heat transfer performance of concrete thermal storage block can be used to store heat in solar heating system, which can improve utility ratio of renewable energy.