超高温热泵的循环构型与混合制冷剂协同优化——面向工业用热的构想  

Collaborative optimization of cycle configuration and mixed refrigerants for very-high-temperature heat pump:A conception for industrial heat consumption

作　　者：徐英杰 王佳锋 张嘉禾 贾留露 韩晓红[2] 陈光明[2] Xu Yingjie;Wang Jiafeng;Zhang Jiahe;Jia Liulu;Han Xiaohong;Chen Guangming(College of Mechanical Engineering,Zhejiang University of Technology;Institute of Refrigeration and Cryogenics,Zhejiang University)

机构地区：[1]浙江工业大学机械工程学院 [2]浙江大学制冷及低温研究所

出　　处：《制冷与空调》2024年第4期58-66,共9页Refrigeration and Air-Conditioning

基　　金：国家自然科学基金(52076185)。

摘　　要：工业超高温热泵正逐渐成为热泵发展的新方向。不同于现有民用为主的空气源热泵,在工业用热中,温升、温跨的工况复杂、差异巨大,要提升能效,须采用新的视角和方法。针对此,本文提出循环构型与混合制冷剂协同优化的思路。首先,基于梯级耦合加热热泵循环,量化循环构型;分析混合制冷剂的泡露点温差效应在大温差工况下的重要影响。其后,通过案例分析验证经循环构型与混合制冷剂协同优化的最高COP_(h)比传统以混合制冷剂匹配或循环构型筛选所得方案的COP_(h)分别提高22.0%和5.8%。Industrial very-high-temperature heat pumps are gradually becoming a new direction for the development of heat pump technology.Unlike existing civil based air source heat pumps,industrial heat consumption has complex temperature rise and temperature span conditions,with significant differences.To improve the energy efficiency,new perspectives and methods must be adopted.In response to this,a collaborative optimization approach of cycle configuration and mixed refrigerants is proposed.Firstly,based on the cascade-coupling-heating heat pump cycle,the cycle configuration is quantified;the important influence of the bubble dew point temperature difference effect of mixed refrig-erants under large temperature difference conditions is analyzed.Subsequently,the case analysis is conducted to verify that the optimal COP_(h)optimized through collaborative optimization of cycle configuration and mixed refrigerants increases by 22.0%and 5.8%respectively,compared to the COP_(h)optimized through traditional mixed refrigerants matc-hing or cycly configuration screening.

关 键 词：超高温热泵 工业热泵 混合制冷剂 梯级耦合加热 协同优化 

分 类 号：TB6[一般工业技术—制冷工程]