冷凝内热源式液体空调再生器模拟研究

Simulation Study on Liquid Air Conditioning Regenerator of Condensation Inside Heat Type

本文对以冷凝热为热源的LiCl溶液再生器进行仿真模拟,阐述了模型的建立及参数的选择。考虑利用冷凝热对除湿溶液进行再生,将管壁边界条件设为恒壁温,在恒壁温边界条件下,分别研究了溶液入口流速、温度及浓度、空气入口流速及温度与再生器出口参数的关系,得到空气出口温度随着空气入口温度、氯化锂溶液温度、浓度增加而增加;空气含湿量沿空气流动方向逐渐增加,并且随溶液入口温度、空气入口温度增加而增加;出口浓度随着入口氯化锂溶液浓度增加而增加等规律,当其他入口参数不变,溶液浓度达到34%时,溶液的再生量为11.3%。

The LiCl solution regenerator that uses heat of condensation as heat source was simulated. The modeling process and parameter selection were expounded. Given that heat of condensation was used for regeneration of liquid desiccant, the pipe＇ s wall boundary condition was set to constant wall temperature. Under the boundary condition of constant wall temperature, the relationship of solution inlet velocity, temperature and concentration, the inlet air velocity and temperature to regenerator outlet parameters was investigated. The results show that the air outlet temperature increased with the rise of air inlet temperature, temperature of lithium chloride solution and concentration of solution ; the air moisture content increased gradually along the air flow direction, and increased with the rise of the inlet temperature and the temperature of air inlet ; the outlet concentration increased with the rise of concentration of lithium chloride solution at the inlet. When other inlet parameters were constant, the solution concentration was 34% , and the solution regeneration was 11.3%.