地表水换热盘管换热特性的理论与试验研究
Theoretical and experimental studies on heat transfer characteristics of surface water heat transfer coils
摘要：
建立了地表水换热盘管的换热模型。对换热盘管在不同换热工况下的换热性能进行了测试，分析了管内外流速、管径及放热或吸热工况对换热性能的影响，分析了换热盘管换热量与盘管长度的关系，给出了不同接近温差时吸热量与盘管长度的关系曲线图。
关键词：地表水换热盘管,换热特性,流速,接近温差,盘管长度
Abstract：
Develops the heat transfer model. Tests the heat transfer characteristics of the coils in different conditions and analyses influences of the flow velocity inside and outside the tube, tube diameter and cooling/heating conditions on the heat transfer performance of the coils. Also analyses the relation between the heat exchange rate and the coil length, and gives the curve chart reflecting the relation between the heat transfer rate and the coil length under different approach temperature differences.
Keywords:surface water heat transfer coil, heat transfer characteristics, flow velocity, approach temperature difference, coil length