Thermal performance of a solar-aided latent heat store used for space heating by heat pump
Thermal performance of a solar-aided latent heat store used for space heating by heat pump
复制标题
DOI：
10.1016/s0038-092x(00)00015-3
复制
发表时间：
2000-01-01
期刊：
影响因子：
6.7
通讯作者：
Esen, M
中科院分区：
文献类型：
--
作者：
Esen, M
本研究针对太阳能热泵系统之圆筒形相变储水槽进行实验与理论研究。使用了定义相变单元的瞬态行为的仿真模型。在该模型中，相变材料（PCM）位于圆管内，传热流体（HTF）平行于相变材料流动，采用基于有限差分法的数值方法对该模型的传热问题（二维处理）进行了求解，并与实验数据进行了验证。试验于1992-1993年和1993-1994年采暖季的11月至次年5月进行，测定了水箱内的平均水温和排管的进、出水温度。实验获得的进水温度也被作为模拟模型的进水温度。从而确定了贮箱内的理论温度和贮热分布。文中还介绍了上述采暖季节的太阳辐射和采暖负荷。(C)2000爱思唯尔科技有限公司版权所有。
In this study, the cylindrical phase change storage tank linked to a solar powered heat pump system is investigated experimentally and theoretically. A simulation model defining the transient behaviour of the phase change unit was used. In the rank, the phase change material (PCM) is inside cylindrical tubes and the hear transfer fluid (HTF) flows parallel to it. The heat transfer problem of the model (treated as two-dimensional) was solved numerically by an enthalpy-based finite differences method and validated against experimental data. The experiments were performed from November to May in the heating seasons of 1992-1993 and 1993-1994 to measure both the mean temperature of water within the tank and the inlet and outlet water temperature of the rank. The experimentally obtained inlet water temperatures are also taken as inlet water temperature of the simulated model. Thus, theoretical temperature and stored heat energy distribution within the tank have been determined. Solar radiation and space heating loads for the heating seasons mentioned above are also presented. (C) 2000 Elsevier Science Ltd. All rights reserved.