热源塔热泵溶液低压沸腾再生装置性能研究  

Research on Performance of Low Pressure Boiling Solution Regeneration Device of Heat-source Tower Heat Pump

作　　者：李达[1] 梁彩华[1] 蒋东梅[1] 张小松[1] LIANG Caihua;LI Da;JIANG Dongmei;ZHANG Xiaosong(Southeast University, Nanjing, Jiangsu 210096, China)

机构地区：[1]东南大学能源与环境学院,江苏南京210096

出　　处：《制冷技术》2017年第2期25-31,共7页Chinese Journal of Refrigeration Technology

基　　金："十二五"国家科技支撑计划项目课题(No.2011BAJ03B14);江苏省自然科学基金重点项目(No.BK2010029)

摘　　要：热源塔热泵是一种新型的建筑冷热源系统,主要应用于我国夏热冬冷地区。针对热源塔冬季运行存在的溶液再生需求,本文提出了一种基于低压条件溶液沸腾再生的方法。本文结合乙二醇水溶液汽液平衡图,分析了乙二醇水溶液的再生机理。本文还建立了低压沸腾溶液再生实验平台和数学模型,分析了不同运行工况对溶液再生装置性能的影响规律。实验结果表明:该数学模型精度较高,溶液沸腾温度、装置换热量、凝结水量等参数模拟值与实验值偏差在5%以内。溶液再生装置中热水流量从0.4 kg/s增大至0.6 kg/s时,装置换热量增大7.7%,凝结水质量增加10.3%;冷却水流量从0.25 kg/s增大至0.45 kg/s时,装置换热量增大13.8%,凝结水质量增加15.9%。Heat-source tower heat pump is a new construction heating and cooling system,and it is widely usedin hot-summer and cold-winter regions of China.In order to meet the needs of solution regeneration duringheat-source tower heat pump running in winter,a low pressure boiling solution regeneration method waspresented.The glycol solution regeneration mechanism was analyzed with the glycol aqueous solutionvapor-liquid equilibrium diagram.The low pressure solution regeneration system was built up and a mathematicalmodel was developed for the system,and the influences of different operation conditions on the performance ofthe solution regeneration device were analyzed.The experimental results showed that the prediction accuracy ofthe mathematical model was high.The relative errors of performance parameters such as solution boilingtemperature,heat exchange,quality of condensed water between simulation results and experimental data werewithin5%.When the hot water flow increased from0.4kg/s to0.6kg/s in regenerator evaporator,the heat transferrate increased by7.7%and condensation water mass increased by10.3%.When the cooling water flow rateincreased from0.25kg/s to0.45kg/s in regenerator condenser,the heat transfer rate increased by13.8%and thecondensation water mass increased by15.9%

关 键 词：热源塔热泵 低压沸腾 溶液再生 性能 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]