基于氨基甲酸铵的吸附式化学热泵循环性能分析  

Performance Analysis of Adsorption Chemical Heat Pump Based on Ammonium Carbamate

作　　者：程晓琳 殷勇高[1,2] 戴苏洲 李伟格 CHENG Xiaolin;YIN Yonggao;DAI Suzhou;LI Weige(School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China;Engineering Research Center of the Ministry of Education for Building Equipment,Energy and Environment of Southeast University,Nanjing 210096,Jiangsu,China)

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]东南大学低碳型建筑环境设备与系统节能教育部工程研究中心,江苏南京210096

出　　处：《制冷技术》2020年第3期1-7,共7页Chinese Journal of Refrigeration Technology

基　　金：国家重点研究发展计划(No.2018YFC0705306)。

摘　　要：针对氨基甲酸铵分解/合成可逆化学反应过程伴随高焓变且反应温度相对较低的特点,本文将化学热泵与吸附法相结合,建立了一种基于氨基甲酸铵的吸附式化学热泵循环,该循环可高效回收低品位余热或废热,提高能源利用效率。通过明确循环工质、分析循环原理及建立循环流程构建完整的循环形式,采用平衡态性能计算方法对循环进行热力分析,分别计算了脱附温度在110~130℃、吸附/合成温度在70~90℃、分解温度在40~60℃范围内变化时的循环性能系数(COP)。对于有效循环,COP随着分解温度升高、吸附/合成温度降低而升高,随脱附温度升高而先升后降,研究范围内的COP可达1.6。In view of the high enthalpy change and relatively low reaction temperature in the reversible chemical reaction process of ammonium carbamate decomposition/synthesis,an adsorption type chemical heat pump cycle based on ammonium carbamate is established by combining chemical heat pump with adsorption method,which can efficiently recover low-grade waste heat and improve energy utilization efficiency.In this paper,a complete circulation form is built by defining circulation working medium,analyzing circulation principle and establishing circulation process,thermodynamic analysis of the cycle with the method of equilibrium performance calculation.The coefficient of performance(COP)is calculated respectively of the cycle when the desorption temperature is 110-130℃,the adsorption/synthesis temperature is 70-90℃,and the decomposition temperature is 40-60℃.For the effective cycle,the COP value increases with the increase of decomposition temperature and the decrease of adsorption/synthesis temperature,and increases first and then decreases with the increase of desorption temperature.COP can reach 1.6 in the discussion range.

关 键 词：化学热泵 氨基甲酸铵 热力分析 循环性能 

分 类 号：TQ051.5[化学工程] TK124[动力工程及工程热物理—工程热物理]