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
徐英杰 1王佳锋 1张嘉禾 1贾留露 1韩晓红 2陈光明2
作者信息
- 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
- 折叠
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COPh比传统以混合制冷剂匹配或循环构型筛选所得方案的COPh分别提高22.0％和5.8％.
Abstract
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 tem-perature span conditions,with significant differences.To improve the energy efficiency,new perspectives and methods must be adopted.In response to this,a collaborative opti-mization 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 COPh optimized through collaborative opti-mization of cycle configuration and mixed refrigerants increases by 22.0％and 5.8％re-spectively,compared to the COPh 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Key words
very-high-temperature heat pump/industrial heat pump/mixed refrigerants/cas-cade-coupling-heating/collaborative optimization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据