Construction and Performance Study of a Transcritical High-Temperature Heat Pump System with Phase Change Thermal Storage

Deng Mengqing; Zhang jiankai; Chen Jianyong; Chen Ying; Luo Xianglong; Liang Yingzong; He Jiacheng

doi:10.12465/issn.0253-4339.20260112001

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Construction and Performance Study of a Transcritical High-Temperature Heat Pump System with Phase Change Thermal Storage

更新时间：2026-04-24

- Construction and Performance Study of a Transcritical High-Temperature Heat Pump System with Phase Change Thermal Storage
- Journal of Refrigeration Pages: 1-10(2026)
- 作者机构：
  
  广东工业大学材料与能源学院广州 510006
- 作者简介：
- 基金信息：
  
  the National Natural Science Foundation of China(52476003;52376003)
- DOI：10.12465/issn.0253-4339.20260112001
  CLC： TU833;TK02
- Received：12 January 2026，
  
  Revised：2026-01-27，
  
  Accepted：03 February 2026，
  
  Online First：24 April 2026，
- 稿件说明：
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邓孟清,张健恺,陈健勇等.储热型跨临界高温热泵系统的构建和性能研究[J].制冷学报,

Deng Mengqing Zhang jiankai Chen Jianyong Chen Ying Luo Xianglong Liang Yingzong,He Jiacheng Yang Zhi.Construction and Performance Study of a Transcritical High-Temperature Heat Pump System with Phase Change Thermal Storage[J].Journal of Refrigeration,
邓孟清,张健恺,陈健勇等.储热型跨临界高温热泵系统的构建和性能研究[J].制冷学报, DOI：10.12465/issn.0253-4339.20260112001.

Deng Mengqing Zhang jiankai Chen Jianyong Chen Ying Luo Xianglong Liang Yingzong,He Jiacheng Yang Zhi.Construction and Performance Study of a Transcritical High-Temperature Heat Pump System with Phase Change Thermal Storage[J].Journal of Refrigeration, DOI：10.12465/issn.0253-4339.20260112001.

摘要

工业余热高效回收对实现工业“双碳”目标至关重要。本文针对中低温余热所面临的利用率低、大温升需求和时间不匹配等挑战，以回收空压站连续余热以满足工业间断高温热需求，开展了基于非共沸工质和梯级相变储热的跨临界高温热泵系统的设计与性能研究。首先，通过单目标优化，筛选出综合性能最优的非共沸工质R290/cis-Butene（0.5/0.5），其COP为3.31且单位容积制热量（VHC）达到5 975.63 kJ/m

。然后，获得了储热器的结构参数，确定梯级相变材料（PCM）的优化配置为高温石蜡与低温石蜡体积比25∶35。最后，研究了系统运行性能，结果表明：梯级PCM配置（Case1）降低了充放热过程中PCM温度不均匀性，并在放热过程中能维持更高的平均出口温度，其性能最优，平均COP达2.88，且压缩机功耗最低。

Abstract

Efficient recovery of industrial waste heat is crucial for achieving the industrial "dual-carbon" goals. In this study， we addressed the challenges associated to low- and medium-temperature waste heat， such as low utilization rates， demand for high-temperature lift， and temporal mismatch. We focused on recovering continuous waste heat from an air compressor station to meet intermittent high-temperature industrial heat demand. We also researched on the design and performance of a transcritical high-temperature heat pump system based on a zeotropic mixture and cascaded phase-change thermal storage. First， via single-objective optimization， the optimal zeotropic mixture R290/cis-Butene （0.5/0.5） was selected， achieving a coefficient of performance （COP） of 3.31 and a volumetric heating capacity （VHC） of 5 975.63 kJ/m³. Subsequently， the structural parameters of the thermal storage unit were obtained， and the optimized configuration of the cascaded phase-change materials （PCMs） was determined to be a volume ratio of 25∶35 for high-temperature to low-temperature paraffin. Finally， the operational performance of the system was investigated. The results show that the cascaded PCM configuration （Case 1） reduces temperature non-uniformity within the PCM during both charging and discharging processes， maintains a higher average outlet temperature during discharge， and achieves optimal performance with an average COP of 2.88 and the lowest compressor power consumption.

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