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High-temperature heat pumps (HTHPs) play a crucial role in sustainable industrial waste heat recovery, improving energy efficiency and reducing carbon emissions. This study evaluates HTHP performance across single-stage, two-stage and cascade cycle configurations using refrigerants such as water, R123, R245fa, and R1233zd(E). Key metrics, including isentropic efficiency, pressure ratios, and discharge temperatures, are examined to assess compressor performance and its impact on system reliability and energy consumption. The analysis focuses on heat sink temperatures ranging from 110 °C to 150 °C and heat source temperatures between 50 °C and 90 °C, reflecting industrial requirements. Environmental considerations are also addressed, highlighting the benefits of low-impact refrigerants that align with regulatory compliance and sustainability goals. This study concludes that while water–R123 achieves the highest COP, the transition to water–R1233zd(E) offers a more sustainable and regulatory-compliant solution, with optimised compressor selection playing a critical role in maintaining efficiency and reliability in industrial HTHP applications.

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Evaluating Compressor Selection and Performance in High-Temperature Heat Pump Systems for Industrial Applications

  • 会议论文

  • 发表日期：

    2026年

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  • Essa Abikar,
  • Tala El Samad

摘要

High-temperature heat pumps (HTHPs) play a crucial role in sustainable industrial waste heat recovery, improving energy efficiency and reducing carbon emissions. This study evaluates HTHP performance across single-stage, two-stage and cascade cycle configurations using refrigerants such as water, R123, R245fa, and R1233zd(E). Key metrics, including isentropic efficiency, pressure ratios, and discharge temperatures, are examined to assess compressor performance and its impact on system reliability and energy consumption. The analysis focuses on heat sink temperatures ranging from 110 °C to 150 °C and heat source temperatures between 50 °C and 90 °C, reflecting industrial requirements. Environmental considerations are also addressed, highlighting the benefits of low-impact refrigerants that align with regulatory compliance and sustainability goals. This study concludes that while water–R123 achieves the highest COP, the transition to water–R1233zd(E) offers a more sustainable and regulatory-compliant solution, with optimised compressor selection playing a critical role in maintaining efficiency and reliability in industrial HTHP applications.