不同工况下除湿溶液再生的模拟与实验

发布时间：2018-12-08 09:51

【摘要】：建立了LiCl溶液再生过程的数学模型,通过模拟分析,得到了溶液再生量、溶液温度和溶液浓度随时间的变化规律。以平均再生量为评价指标,对LiCl溶液的再生性能进行了实验研究。分析了热源温度、溶液浓度、溶液初始温度、再生压力和冷水温度5个因素分别对溶液再生性能的影响规律。实验结果表明:溶液浓度和再生压力对溶液再生性能影响显著,冷水温度对溶液再生性能的影响最小。在设定的标准工况下,再生压力为4k Pa、溶液中LiCl质量分数从28%增大到34%时,平均再生量由20.45g/(m~2·s)减小至7.44g/(m~2·s);再生压力从4k Pa升高至10k Pa时,平均再生量由15.33g/(m~2·s)降低至1.92g/(m~2·s)。最后,以溶液温度和溶液浓度作为对比目标参数将模拟结果和实验结果进行了对比分析,结果表明,实验值与模拟值符合较好。
[Abstract]:The mathematical model of the regeneration process of LiCl solution was established. By simulation and analysis, the variation of solution regeneration amount, solution temperature and solution concentration with time were obtained. The regeneration performance of LiCl solution was studied with the average regeneration quantity as the evaluation index. The effects of heat source temperature, solution concentration, solution initial temperature, regeneration pressure and cold water temperature on the regeneration performance of the solution were analyzed. The experimental results show that the concentration of solution and the pressure of regeneration have significant effects on the regenerative energy of the solution, while the temperature of cold water has the least effect on the regeneration performance of the solution. When the regeneration pressure of 4k Pa, solution was increased from 28% to 34%, the average regeneration rate decreased from 20.45g/ (mt2s) to 7.44g/ (mt2 s);) under the standard operating conditions. When the regeneration pressure increased from 4k Pa to 10k Pa, the average regeneration capacity decreased from 15.33g/ (mc2s) to 1.92g/ (mt2 s). Finally, the simulation results are compared with the experimental results using the solution temperature and the solution concentration as the target parameters. The results show that the experimental values are in good agreement with the simulated values.
【作者单位】： 天津商业大学天津市制冷技术重点实验室;郑州宇通重工有限公司;
【分类号】：O645;TB4
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本文编号：2368146