新型宽温域热电双驱压缩-吸收型热泵循环特性分析  

Characteristic analysis of a new wide temperature range thermoelectric dual-drive compression-absorption heat pump cycle

作　　者：胡芸蓉 周礼庆 姜海潮 刘青国 王腾辉 王国顺 孙健[1] HU Yunrong;ZHOU Liqing;JIANG Haichao;LIU Qingguo;WANG Tenghui;WANG Guoshun;SUN Jian(National Key Laboratory of New Energy Power System,North China Electric Power University,Beijing 102206,China;Shanxi China Coal Pingshuo Energy Chemical Company Limited,Shuozhou 036006,China)

机构地区：[1]华北电力大学新能源电力系统全国重点实验室,北京102206 [2]山西中煤平朔能源化工有限公司,山西朔州036006

出　　处：《综合智慧能源》2024年第12期64-71,共8页Integrated Intelligent Energy

基　　金：国家自然科学基金项目(52090062);国家重点研发计划项目(2019YFEO104900);中央高校基本科研业务费专项资金(2020MS009)。

摘　　要：针对传统热泵在处理宽温度范围余热时的局限性,如常规压缩式热泵难以实现超过50℃的升温,以及吸收式热泵对热源的适应能力有限,提出了一种新型的宽温域热电双驱压缩-吸收型热泵循环方案。将吸收式热泵循环中的发生器与压缩式热泵循环中的冷凝器耦合成双相变换热器,利用约60℃工业余热制取130℃左右的高温热水或蒸汽。通过分析耦合热泵机组的运行原理,构建了完整的热力学模型,并使用EES软件进行仿真模拟。通过模拟计算得出,余热出口温度、热水进出口温度、双相变换热器的冷凝温度和水蒸气压缩机的压缩比对性能系数(COP)、系统制热量、2个压缩机功率和各个部件换热量的影响规律,并确定了最优工况即当水蒸气压缩机压缩比为6,双相变换热器的冷凝温度为70℃时,该循环可将15℃水加热到122℃,COP为1.614。在保证机组性能的前提下,该循环最高可将水温提高100~110℃,这在利用低品位余热制取高温热水或蒸汽领域具有一定的应用潜力。Due to the wide temperature range of such waste heat,it is difficult for conventional compression heat pumps to achieve a temperature rise of more than 50℃,and the adaptability of absorption heat pumps to heat sources is limited.In response to this problem,a new wide temperature range thermoelectric dual-drive compression-absorption heat pump cycle was proposed,which coupled the generator in the absorption cycle with the condenser in the compression cycle to form a dual-phase heat exchanger,utilizing industrial waste heat of approximately 60℃to produce high-temperature hot water or steam at around 130℃.The operating principle of coupled heat pump units was analyzed,a complete thermodynamic model was constructed,and simulations were conducted using EES software.The simulation results revealed the effects of waste heat outlet temperature,hot water inlet and outlet temperature,condensation temperature of the dual-phase heat exchanger,and compression ratio of the water vapor compressor on the coefficient of performance(COP),system heating capacity,power of the two compressors,and heat exchange of each component.The optimal operating conditions were determined:when the steam compressor ratio was 6 and the condensation temperature of the dual-phase heat exchanger was 70℃,the cycle could heat water from 15℃to 122℃,with a COP of 1.614.Under the premise of ensuring the performance of the unit,this cycle can increase the water temperature by up to 100℃to 110℃,demonstrating application potential in the field of utilizing low-grade waste heat to produce high-temperature hot water or steam.

关 键 词：余热利用 耦合热泵循环 压缩式热泵 吸收式热泵 

分 类 号：TK115[动力工程及工程热物理—热能工程]