A Novel Compact R32/DMF Absorption Refrigeration System Driven by Low-Temperature Heat Source

Zhu Haiping; Gao Peng; Wang Qidong; Suo Zhenyu; Wu Weidong; Wang Liwei

doi:10.12465/issn.0253-4339.20250916001

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A Novel Compact R32/DMF Absorption Refrigeration System Driven by Low-Temperature Heat Source

更新时间：2026-04-16

- A Novel Compact R32/DMF Absorption Refrigeration System Driven by Low-Temperature Heat Source
- Journal of Refrigeration Pages: 1-7(2026)
- 作者机构：
  
  1.上海理工大学能源与动力工程学院上海 200093
  2. 上海交通大学制冷与低温工程研究所上海 200240
- 作者简介：
- 基金信息：
  
  the National Natural Science Foundation of China(52236004;52206017)
- DOI：10.12465/issn.0253-4339.20250916001
  CLC：
- Revised：2025-11-25，
  
  Accepted：01 December 2025，
  
  Online First：16 April 2026，
- 稿件说明：
移动端阅览
朱海平,高鹏,王启栋等.新型低温热能驱动的R32/DMF紧凑型吸收式制冷系统[J].制冷学报,

Zhu Haiping,Gao Peng,Wang Qidong,et al.A Novel Compact R32/DMF Absorption Refrigeration System Driven by Low-Temperature Heat Source[J].Journal of Refrigeration,
朱海平,高鹏,王启栋等.新型低温热能驱动的R32/DMF紧凑型吸收式制冷系统[J].制冷学报, DOI：10.12465/issn.0253-4339.20250916001.

Zhu Haiping,Gao Peng,Wang Qidong,et al.A Novel Compact R32/DMF Absorption Refrigeration System Driven by Low-Temperature Heat Source[J].Journal of Refrigeration, DOI：10.12465/issn.0253-4339.20250916001.

摘要

吸收式制冷被认为是数据中心余热回收最具前景的技术之一。然而现有吸收式制冷系统面临驱动温度高（>85 ℃）以及系统体积大等问题，与数据中心余热温度低（<70 ℃）和高密度空间部署需求不匹配。为此，本文提出一种针对数据中心余热回收的低温热能驱动的紧凑型吸收式制冷系统，并首次搭建了实验样机，采用适配于低温热能的有机工质对R32/DMF降低驱动温度，同时使用紧凑化板式换热器作为吸收器、发生器和溶液热交换器，强化传热和缩小系统体积。实验表明，在驱动热源温度为50~70 ℃、吸收器冷却水进口温度为25 ℃时，系统蒸发温度约为13.1 ℃，此时COP最高可达0.57。通过调节制冷剂侧膨胀阀开度，蒸发温度可降至10.4 ℃，COP最高可达0.69，逐渐减小稀溶液侧膨胀阀开度，COP会小幅上升，此外COP随蒸发器进风温度的降低而降低。本文设计的低温热能驱动的紧凑型R32/DMF吸收式制冷样机，为数据中心绿色低碳转型提供新的技术思路。

Abstract

Absorption refrigeration is one of the most promising methods for recovering waste heat in data centers. However， the conventional method demands high driving temperatures （>85 ℃） and occupies substantial space， rendering it incompatible with the waste heat （<70 ℃） and high-density deployment requirements of data centers. To address these problems， for the first time， to the best of our knowledge， a novel compact absorption refrigeration experimental prototype was developed based on the working pair R32/DMF， which was selected for its suitability as a low-temperature driving heat source. Furthermore， compact plate heat exchangers were employed for the absorber， generator， and solution heat exchangers to minimize the overall system footprint. Experimental results indicated that under a driving heat source temperature range of 50-70 ℃ and an absorber cooling water inlet temperature of 25 ℃， the novel system achieved an evaporating temperature of approximately 13.1 ℃ and a coefficient of performance （COP） of up to 0.57. By adjusting the expansion valve opening on the refrigerant side， the evaporating temperature was reduced to 10.4 ℃， with a corresponding increase in COP to 0.69. Meanwhile， gradually reducing the expansion valve opening on the weak solution side caused the COP to increase slightly. Moreover， a reduction in the evaporator inlet air temperature led to a corresponding decrease in the system COP. The proposed compact， low-temperature， waste-heat-driven R32/DMF absorption refrigeration prototype presents a novel technical solution for the decarbonization of data centers.

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