冰水混合间接换热系统中换热器参数试验

利用北方地区冬冷夏热的特点，冬季冻冰蓄冷，夏季利用。采用间接换热冷量交换系统，有利于低碳节能和保护环境。该文对系统中换热器的参数进行了优化试验。以热交换器中的风速、流量、迎风面积、热管长度为影响因素，以热交换器的换热效率为目标，得到换热效率84%以上的较佳参数组合为风速2.54～2.93 m/s，流量0.72～0.80 m3/h，迎风面积11.93～13.51 dm2，热管有效长度7.99～9.95 m。该研究为利用自然冷资源间接换热冷量交换系统中热交换器的设计和应用提供依据。

Experiment on heat exchanger parameters of indirect heat transfer system by mixed ice water

Considering the characteristics of hot summer and cold winter in northern area, ice can be saved in winter and used in summer. The indirect heat transfer system is beneficial for reducing carbon, saving energy and protecting the environment. The parameters of heat exchanger were studied in this paper, including the efficiency of heat transfer influenced by wind speed, flow, heat pipe length, windward acreage of heat exchanger. The results showed that more 84% efficiency of heat transfer could be attained when wind speed was 2.54-2.93 m/s, flow rate was 0.72-0.80 m3/h, windward area was 11.93-13.51 dm2, heat pipe length was 7.99-9.95 m. The results can be used for heat exchanger design and application in indirect heat cold exchange system of natural cold resources.