Feasibility Analysis of a Wide-Temperature-Zone Heat-Pump Air-Conditioning System

Zhang Jiaxing; Chen Zhenguo; Zhang Ce; Zhang Yu; Wang Zhipeng; Hou Beiran; Tian Hua; Li Minxia

doi:10.12465/j.issn.0253-4339.2025.06.065

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Feasibility Analysis of a Wide-Temperature-Zone Heat-Pump Air-Conditioning System

更新时间：2025-12-03

- Feasibility Analysis of a Wide-Temperature-Zone Heat-Pump Air-Conditioning System
- Journal of Refrigeration Vol. 46, Issue 6, Pages: 65-72(2025)
- 作者机构：
  
  1.天津大学先进内燃动力全国重点实验室　天津　 300350
  2.三河同飞制冷股份有限公司　三河　 065200
- 作者简介：
  
  Li Minxia, female, Ph. D., School of Mechanical Engineering, Tianjin University, 86-13012230877, E-mail: tjmxli@tju.edu.cn. Research fields: energy-saving technology of refrigeration and heat pumps.
- 基金信息：
  
  the National Key R&D Program "Science and Technology Winter Olympics" Key Project(2021YFF0306801)
- DOI：10.12465/j.issn.0253-4339.2025.06.065
  CLC： TB61⁺1;TB657.2
- Received：20 December 2024，
  
  Revised：2025-01-09，
  
  Accepted：06 March 2025，
  
  Published：16 December 2025
- 稿件说明：
移动端阅览
Zhang Jiaxing, Chen Zhenguo, Zhang Ce, et al. Feasibility Analysis of a Wide-Temperature-Zone Heat-Pump Air-Conditioning System[J]. Journal of Refrigeration, 2025, 46(6): 65-72.
DOI：

Zhang Jiaxing, Chen Zhenguo, Zhang Ce, et al. Feasibility Analysis of a Wide-Temperature-Zone Heat-Pump Air-Conditioning System[J]. Journal of Refrigeration, 2025, 46(6): 65-72. DOI： 10.12465/j.issn.0253-4339.2025.06.065.

摘要

随着全球变暖问题的日益严峻，传统低效率和高污染的供暖/供冷方式已经无法满足现行的环保政策要求。提出一种适用于建筑的宽温区制冷热泵系统。该系统采用非共沸环保工质，并将单级蒸气压缩技术与自复叠热泵技术结合，实现了在环境温度-20~40 ℃的供暖/供冷。选取沈阳作为应用地点，与传统R134a空调供冷与燃煤锅炉供暖对比，以验证系统的可行性。研究结果显示，通过热力学计算，新系统在单级制冷模式下的能效可达3~5.47；在环境温度为-20 ℃时，供热能效可达到1.81。通过实验验证，该系统可在-20~40 ℃稳定运行，且在蒸发侧油的温度为-20 ℃时，供热能效实验值可达到1.4。本研究旨在助力宽温区热泵空调系统研发进程，为推动绿色建筑发展提供理论依据。

Abstract

In response to the escalation of global warming

low efficiency of traditional heating methods

and high pollution levels

this study investigated a novel wide-temperature-zone heat-pump air-conditioning system for buildings

which employs an eco-friendly non-eutectic working fluid. It integrates the single-stage vapor compression cycle and the auto-cascade heat-pump cycle

enabling efficient heating and cooling from -20 ℃ to 40 ℃ ambient temperature. The viability of the system was tested in Shenyang and compared with that of a conventional R134a air-conditioning system for cooling and a coal-fired boiler for heating. The thermodynamic evaluation indicated coefficient of performance of 3-5.47 in the cooling mode and 1.81 in the heating mode at -20 ℃. Experimental validation confirmed stable operation across a range of -20 ℃ to 40 ℃

with a heating coefficient of performance of 1.4 at -20 ℃. This research provides theoretical support for the advancement of green building development using wide-temperature-zone heat-pump technology.

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references

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