技术中心

【中文摘要】 对现有3种典型结构(开式、普通型闭式及改进型闭式)的型式、工作原理及应用性能等进行比较:开式结构换热效率高,构造简单、造价低,但工质(夏季冷却水,冬季防冻溶液)飘失较大,且防冻溶液因吸收空气中的水分逐渐稀释,使得冰点温度不稳定;普通型闭式结构采用低温宽带换热盘管,可有效抑制冬季结霜问题,减少工质的飘失,但换热效率较低;改进型闭式结构则较好地结合了上述2种结构的优点,具有较完善的工作性能,值得推广及深入研究。 【英文摘要】 Compares three typical heat-source towers with different structures, namely open structure, common closed structure and improved closed structure in aspects of working principle, application characteristics and performance, etc. It is found that each type has its own merits and shortcomings separately. For the open type, it has simple structure, smaller investment, higher thermal efficiency, while the working fluids (cooling water in summer or antifreeze in winter) lose greatly in the process, besides the freezing temperature of antifreeze is unstable due to absorption of moisture in air during winter. For the common closed type, there is no worry of frosting problem in winter, also drifts of the working fluids are reduced greatly, which are attributed to the adoption of coil-heat exchanger with broader fins, yet the thermal efficiency is lower. For the improved closed type, it combines the merits of above two types, showing better performance in the operation, being worth to be popula... 【中文关键词】 热源塔; 结构形式; 工作原理; 性能比较; 空调 【英文关键词】 heat-source tower; structural type; working principle; comparison of performance; air-conditioning