摘要
针对热源塔盐溶液的再生问题,提出一种基于冷冻法的热源塔盐溶液再生系统,并构建溶液冷冻再生试验台,以溶液再生效率为评价指标,对热源塔盐溶液的再生性能进行试验研究。结果表明:脱盐装置内含盐冰温度从上到下逐渐下降,下层冰内盐质量分数较高,上层冰内盐质量分数较低。环境温度降低和装置保温性能提高均可提高溶液再生效率,但会延长脱盐时间。综合考虑溶液再生效率和脱盐时间2个因素,脱盐装置采用保温PVC且环境温度为20℃时为最佳工况,对应溶液再生效率达到10.3 kg/(kW·h),脱盐时间为295 min。与传统溶液再生方式相比,基于冷冻法的溶液再生方式具有较好的节能性。
To solve the regeneration of salt solution in heat source tower,a salt solution regeneration system of heat source tower based on freezing method is proposed,and an experimental platform for freezing regentration of salt solution is constructed.The regeneration performance of salt solution in heat source tower is studied experimentally using the solution regeneration efficiency as the evaluation index.The results show that,the temperature of salt ice in desalination unit decreases gradually from top to bottom,which indicates that the concentration of salt ice in the lower layer is higher than that that of salt ice in the upper layer.The solution regeneration efficiency can be improved by decreasing the ambient temperature and improving the thermal insulation performance of the equipment,but the desalination period will be prolonged.Considering these two factors of solution regeneration efficiency and desalination period,the optimum working condition can be achieved adopting insulation PVC as the desalination unit at 20℃,when the solution regeneration efficiency reaches 10.3 kg/(kW·h)and the desalination period is 295 minutes.Compared with traditional solution regeneration method,the freezing regeneration method has better energy-saving.
作者
曹先齐
文先太
吴霜
Cao Xianqi;Wen Xiantai;Wu Shuang(Nanjing Institute of Technology)
出处
《制冷与空调》
2019年第12期61-65,共5页
Refrigeration and Air-Conditioning
基金
南京工程学院科研启动基金(YKJ201409)
关键词
热源塔
热泵
冷冻再生
盐溶液
再生效率
heat source tower
heat pump
freezing regeneration
salt solution
regeneration efficiency
