自然工质印染余热回收高温热泵系统设计与分析  

Design and analysis of natural working medium printing waste heat recovery high temperature heat pump systems

作　　者：沈九兵 韦文斌 王炳东 陈杨 陈育平 SHEN Jiubing;WEI Wenbin;WANG Bindong;CHEN Yang;CHEN Yuping(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学能源与动力学院,镇江212100

出　　处：《江苏科技大学学报（自然科学版）》2024年第4期86-91,共6页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(52006092)。

摘　　要：针对浙江某染厂印染工艺消耗大量热源蒸汽制备热水以及存在大量高温废水余热浪费的生产现状,提出一种能实现印染废水热回收与利用的,以水为循环工质,采用高效接触式冷凝器和喷水双螺杆压缩机的半开式高温热泵系统.通过热力学模型建立与求解,分析了热泵系统性能系数(COP)和比能耗(SWC)的变工况特性,并基于最佳工况,探讨系统应用于染厂的节能减排效益.研究结果表明,增大热泵蒸发温度和减小冷凝温度能有效提升系统能效,在冷凝温度为110℃,蒸发温度为80℃的条件下,热泵系统COP和SWC分别可达到8.38和11.6 kW·h·m^(-3);采用本系统完全回收染厂高温废水余热,预计可以降低46.33%的蒸汽消耗量,以及35.81%的运行成本,并减小40.32%的二氧化碳排放量.In view of the production status of a dyeing plant in Zhejiang Province which consumes a lot of heat source steam to produce hot water and has a lot of waste heat of high temperature wastewater,a semi-open high temperature heat pump system using water as circulating working medium,with high efficiency contact condenser and spray twin-screw compressor,is proposed for waste heat recovery and heat feeding of printing and dyeing wastewater.By establishing and solving the thermodynamic model,the performance coefficient(COP)and specific energy consumption(SWC)of the heat pump system are analyzed,and the energy saving and emission reduction benefits of the system discussed based on the best working conditions.The results show that increasing the evaporation temperature of the heat pump and decreasing the condensation temperature can effectively improve the energy efficiency of the system.Under the conditions of 110℃ condensation temperature and 80℃ evaporation temperature,the COP and SWC of the heat pump system can reach 8.38 and 11.6 kW·h·m^(-3),respectively.It is estimated that the system can reduce the steam consumption by 46.33%,the energy purchase cost by 35.81%,and the carbon dioxide emission by 40.32%.

关 键 词：余热回收 高温热泵 印染废水 节能减排 

分 类 号：TB61.1[一般工业技术—制冷工程] P747[天文地球—海洋科学]