摘要
提出了一种不需要额外消耗能源的热源塔防冻液浓缩再生方式:将冬季使用后的低浓度防冻液储存,在夏季作为制冷系统中的冷却水使用,同时进行脱水浓缩。建立了热源塔内空气与溶液热质交换的数学计算模型。计算结果表明:溶液质量分数、空气相对湿度、空气流量、溶液流量、进口空气温度和进口溶液温度对溶液中的水蒸发量有重要影响;在热源塔溶液的浓缩再生运行中,补充溶液与否对再生时间影响不大。以南京地区1栋办公建筑热源塔为例进行计算得知,完成全部溶液的浓缩再生约需8 d,该防冻液浓缩再生方式是可行的。
Proposes an antifreeze concentration and regeneration method of heat source tower without additional energy consumption:the low concentrated antifreeze used in winter is stored as cooling liquid of refrigeration system in summer,and dewatered and concentrated at the same time.Establishes a mathematical model of heat and mass exchange between air and solution in the heat source tower.The results show that the mass concentration of solution,relative humidity of air,air flow,solution flow,inlet air temperature and inlet solution temperature significantly impact on the evaporation of water in the solution.During the solution concentrating and regeneration operation of the heat source tower,the supplement of solution has little influence on the regeneration time.Taking a heat source tower of an office building in Nanjing as an example,the calculation shows that it takes about 8 days to complete the concentration and regeneration of all solutions,which means that the method of the antifreeze concentration and regeneration is feasible.
作者
黄与飞
葛凤华
胡自成
陈开楠
Huang Yufei;Ge Fenghua;Hu Zicheng;Chen Kainan(Jiangsu University,Zhenjiang,Jiangsu Province,China)
出处
《暖通空调》
2020年第3期80-86,共7页
Heating Ventilating & Air Conditioning
关键词
热源塔
防冻液
再生
蒸发
气象参数
heat source tower
antifreeze
regeneration
evaporation
weather parameter
