基于甲酸钾溶液的热源塔参数敏感性分析  

Parameter Sensitivity Analysis for Heat Source Tower Based on Potassium Formate

作　　者：王琪琪 施志钢[1] 李志刚 张璐瑶 刘婉清 WANG Qiqi;SHI Zhigang;LI Zhigang;ZHANG Luyao;LIU Wanqing(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266520,Shandong,China)

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266520

出　　处：《建筑节能(中英文)》2025年第2期143-150,共8页Building Energy Efficiency

基　　金：国家自然科学基金资助项目(52078257)。

摘　　要：为进行甲酸钾溶液作为防冻液的开式横流热源塔运行参数敏感性分析,对开式横流热源塔热质交换过程建立模型,采用MATLAB进行数值求解,并以青岛市某实际工程运行数据对比验证模型的准确性。在分析各因素对传热传质特性影响的基础上,采用正交试验法,设计L25(5~6)的正交试验,根据青岛室外气象条件和实际工程运行数据设定因素的水平范围,将总换热量与潜热占比作为试验目标,进行了极差和方差分析。结果表明,影响热源塔总换热量的主次因素为:空气温度、溶液温度、空气流量、空气相对湿度、溶液流量、溶液浓度,其中空气温度对总换热量的影响极为显著;对潜热占比的影响程度由大到小排序为:溶液温度、空气温度、空气相对湿度、空气流量、溶液流量、溶液浓度,其中溶液温度对潜热占比具有极显著的影响。The heat source tower heat pump system is undergoing rapid evolution owing to its environmental friendliness and high efficiency.However,due to the numerous inlet parameters of the heat source tower,the various thermal properties of different antifreezes,the complex heat and mass exchange process with air and solution,and the sensitivity of operational parameters on the tower to heat and mass transfer is less studied,the heat exchange efficiency of the heat source tower in practical engineering is low,which affects the operational efficiency of the whole heat pump system.To solve this problem,a new type of antifreeze,potassium formate solution,is proposed,which is used as the spray liquid for the open-type cross-flow heat source tower.A mathematical model is developed to analyze the impact of operational parameters on heat transfer in an open-type cross-flow heat source tower.The saturated vapor pressure of the potassium formate solution is determined using literature data and the Clausius-Clapperron equation.The model is solved numerically using MATLAB,and its accuracy is confirmed by comparing it with the operational data from a real-world project in Qingdao.Based on the analysis of the influence of various elements on heat and mass transfer characteristics,six inlet parameters are chosen.An orthogonal experiment with six factors and five levels is designed using the orthogonal experimental method.The range of factor levels is determined according to meteorological conditions in Qingdao and operational data of practical projects.Then,the total heat transfer and the latent heat transfer ratio are taken as the experimental targets,and the computed data is analyzed using range and variance analysis.The findings indicate that the primary and secondary variables that impact the overall heat transfer performance of the heat source tower are as follows:air temperature,solution temperature,air mass flow rate,air relative humidity,solution mass flow rate,solution concentration.It should be noted that the air temperature

关 键 词：热源塔 传热 传质 数值模拟 正交试验 换热量 潜热占比 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程] TK123[动力工程及工程热物理—工程热物理]