Scholarlink

<p>CO<sub>2</sub> heat pumps are widely recognized for their high efficiency and environmental sustainability in heating applications. However, their performance is significantly compromised in high-temperature heat recovery processes due to excessive throttling losses. Although integrating thermal energy storage (TES) effectively addresses these technical constraints, the economic implications of such hybrid systems remain understudied. This work presents a comprehensive techno-economic analysis of a transcritical CO<sub>2</sub> heat pump integrated with TES system, combining experimental validation with dynamic simulation. Life-cycle cost assessments conducted across three Chinese climate zones – Xi’an (cold zone B), Harbin (severe cold zone A), and Beijing (cold zone A) - revealed that the system achieves operational cost reductions of 11 %, 16 %, and 8 % respectively, compared to the conventional heating systems, with corresponding payback periods of 5.5, 5.0, and 5.8 years. These findings not only verify the system’s economic viability but also reveal its climate adaptability, particularly in severe cold regions where conventional systems face efficiency limitations. This study provides critical theoretical and practical foundations for scaling up transcritical CO<sub>2</sub> heat pump applications in sustainable building heating through techno-economic analysis and climate adaptability validation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental investigation and techno-economic analysis of an integrated CO2 heat pump system with thermal energy storage

  • 期刊论文

  • 发表日期：

    2025年10月24日

查看全文
  • Yuxin Zheng,
  • Tiantian Xu,
  • Haihua Liu,
  • Zizhen Huang

摘要

CO2 heat pumps are widely recognized for their high efficiency and environmental sustainability in heating applications. However, their performance is significantly compromised in high-temperature heat recovery processes due to excessive throttling losses. Although integrating thermal energy storage (TES) effectively addresses these technical constraints, the economic implications of such hybrid systems remain understudied. This work presents a comprehensive techno-economic analysis of a transcritical CO2 heat pump integrated with TES system, combining experimental validation with dynamic simulation. Life-cycle cost assessments conducted across three Chinese climate zones – Xi’an (cold zone B), Harbin (severe cold zone A), and Beijing (cold zone A) - revealed that the system achieves operational cost reductions of 11 %, 16 %, and 8 % respectively, compared to the conventional heating systems, with corresponding payback periods of 5.5, 5.0, and 5.8 years. These findings not only verify the system’s economic viability but also reveal its climate adaptability, particularly in severe cold regions where conventional systems face efficiency limitations. This study provides critical theoretical and practical foundations for scaling up transcritical CO2 heat pump applications in sustainable building heating through techno-economic analysis and climate adaptability validation.