Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO<sub>2</sub> for Data Centers

Dai Baomin; Kong Ziang; Liu Shengchun; Qian Jiabao; Li Weifeng; Zhang Libiao

doi:10.12465/j.issn.0253-4339.2025.01.086

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Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO₂ for Data Centers

更新时间：2025-01-23

- Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO₂ for Data Centers
- Journal of Refrigeration Vol. 46, Issue 1, Pages: 86-93(2025)
- 作者机构：
  
  1.天津大学医学工程与转化医学研究院　天津　 300072
  2.天津市制冷技术重点实验室　天津商业大学机械工程学院　天津　 300134
  3.浙江国祥股份有限公司　上虞　 312300
- 作者简介：
  
  Liu Shengchun, professor, School of Mechanical Engineering, Tianjin University of Commerce, 86-13920682426, E-mail: liushch@tjcu.edu.cn. Research fields: replacement of natural working medium, energy saving and optimization of refrigeration system.
- 基金信息：
  
  Postdoctoral Science Foundation project(2023M732582)
- DOI：10.12465/j.issn.0253-4339.2025.01.086
  CLC： TB61⁺1;TK11⁺4
- Received：11 October 2023，
  
  Revised：2023-11-17，
  
  Accepted：04 January 2024，
  
  Published：16 February 2025
- 稿件说明：
移动端阅览
Dai Baomin, Kong Ziang, Liu Shengchun, et al. Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO₂ for Data Centers[J]. Journal of Refrigeration, 2025, 46(1): 86-93.
DOI：

Dai Baomin, Kong Ziang, Liu Shengchun, et al. Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO₂ for Data Centers[J]. Journal of Refrigeration, 2025, 46(1): 86-93. DOI： 10.12465/j.issn.0253-4339.2025.01.086.

摘要

为实现数据中心绿色高效制冷，并提高能源综合利用率，提出了集成机械过冷和双温蒸发技术的CO

数据中心冷却供热系统（DMS-DE）。建立了系统热力学和碳排放特性分析模型，并与基本CO

系统（Base）和单温蒸发机械过冷CO

系统（DMS-SE）进行对比分析。结果表明：DMS-DE存在最大COP（性能系数）、最优过冷度和排气压力。采用机械过冷技术和双温蒸发技术可显著提升系统COP和

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效率。与Base和DMS-SE相比，COP分别提高14.1%和9.0%，

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效率分别提高13.24%和4.31%。DMS-DE的生命周期碳排放相对Base和DMS-SE分别降低16.1%和9.3%。

Abstract

A CO

data center cooling and heating system integrated with dedicated mechanical subcooling and dual-temperature evaporation technology (DMS-DE) is proposed to realize green and efficient cooling for data centers and improve comprehensive energy efficiency. A thermodynamic and carbon emission performance system model was established and compared with the basic CO

system (Base) and a single evaporating-temperature CO

system with dedicated mechanical subcooling (DMS-SE). The results demonstrated that the DMS-DE system had the maximum coefficient of performance (COP)

optimal subcooling degree

and discharge pressure. Therefore

adopting the DMS-DE can significantly increase the system COP and exergy efficiency. Compared with Base and DMS-SE

COP increased by 14.1% and 9.0%

and the exergy efficiency increased by 13.24% and 4.31%

respectively. The life cycle carbon emissions of the DMS-DE system were reduced by 16.1% and 9.3% compared with Base and DMS-SE

respectively. This study can provide a technical reference for the highly efficient and clean operation of combined hea

ting and cooling utilization for data center scenarios.

关键词

Keywords

references

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Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO2 for Data Centers

DOI：10.12465/j.issn.0253-4339.2025.01.086

摘要

Abstract

关键词

Keywords

references

Performance of Cooling and Heating System with Dual-Evaporating Temperature and Mechanical Subcooling Using CO₂ for Data Centers