直接接触式蓄冷器换热性能的实验研究  

Experimental Studying on the Heat Transfer Performance of Direct Contact Cool Storage Tank

作　　者：李立[1] 孟迪[1] 黄丽丽[1] 

机构地区：[1]黑龙江东方学院建筑工程学部

出　　处：《建筑热能通风空调》2016年第1期15-18,56,共5页Building Energy & Environment

摘　　要：本文搭建了一个小型直接接触式蓄冷器实验台,研究了直接接触式蓄冷器内的换热特性。采用相变温度为7℃的有机相变材料作为蓄冷剂、水作为载冷剂进行直接接触式蓄冷过程的实验,通过实验研究了喷口位置、载冷剂进口温度、载冷剂进口流量、蓄冷剂进口流速对质量换热系数的影响。结果表明,质量换热系数随着载冷剂进口温度的增加而减小、载冷剂流量的增加而增大,随着喷口位置的降低而升高、蓄冷剂进口流速的增大而升高,但当流速达到2.8 m/s后,喷口位置对质量换热系数的影响力逐渐减小。A small-sized direct contact cool storage tank for the experiment was set up in order to investigate heat transfer performance of the direct contact cool storage tank. Using the organic phase change material whose phase change temperature is 7 ℃ as cool storage medium, water as Heat Transfer Fluid（HTF） to the experiment of direct contact charging process. The influence of nozzle position, HTF inlet temperature and inlet flow rate, cool storage medium inlet velocity on the quality of the heat transfer coefficient through experiment. The results show that： the quality of the heat transfer coefficient decreases with the increasing HTF inlet temperature, increases with the increasing HTF inlet flow rate, increases with the reducing nozzle position, increases with the increasing cool storage inlet velocity,however, the influence of nozzle position on the quality of the heat transfer coefficient decreases after the flow velocity reach 2.8 m/s.

关 键 词：直接接触式蓄冷 换热性能 蓄冷器 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]