布水器结构参数对拼装式方形蓄热水箱热分层性能影响的实验研究
Experimental study on influence of structural parameters of water distributors on thermal stratification effect of assembled square hot-water storage tanks
摘要：
本研究提出了一种用于改善拼装式方形蓄热水箱内部热分层效果的方形布水器,对比了有无布水器对蓄热水箱热分层的影响。实验研究了布水器的3种结构参数(平板尺寸、平板间距、挡板安装形式)对蓄热水箱热分层的影响。结果表明:布水器入口方式能有效改善水箱内热分层效果;平板当量直径与水箱当量直径比为0.15、平板间距与水箱高度比为0.05的布水器表现出更好的分流效果,挡板安装形式对水箱热分层的影响不大。
Abstract：
This study proposes a square water distributor for improving the thermal stratification effect of the assembled square hot-water storage tank, and compares the impacts of water distributors and no water distributors on the thermal stratification of hot-water storage tanks. The effects of three structural parameters of the water distributor (plate size, plate spacing, baffle installation form) on the thermal stratification of the hot-water storage tank are experimentally studied. The results show that the inlet method of the water distributor can effectively improve the thermal stratification effect in the water tank. When the ratio of the equivalent diameter of the plate to the equivalent diameter of the water tank is 0.15 and the ratio of the plate spacing to the water tank height is 0.05, the water distributor shows a better diversion effect. The installation form of the baffle has little effect on the thermal stratification effect of the water tank.
Keywords:hot-water storage tank; water distributor; thermal stratification; structural parameter; plate size; plate spacing; baffle installation form; stratification efficiency