Investigation of heat pump technologies for high-temperature applications above 250 °C

JunSoo Yoo, Carlos E. Estrada-Perez and Byung-Hee Choi

Applied Energy, 2025, vol. 384, issue C, No S030626192500114X

Abstract: This paper examines heat pump (HP) technologies to achieve heat supply temperatures above 250 °C, referred to as ultra-high-temperature heat pump (UHTHP). UHTHP, as a low-carbon heat delivery and heat augmentation technology, can offer an alternative to traditional combustion heating for decarbonizing high-temperature industrial processes. However, the heat supply temperature of over 250 °C surpasses the temperature range typically covered in the high-temperature HP literature and existing capabilities of commercial HP systems. This paper reviews HP technologies with the potential to evolve into UHTHP. Additionally, UHTHP studies in the literature are analyzed to compare the pros, cons, and technical potentials of various HPs using different thermodynamic cycles and fluids. We then pinpoint the technical gaps and challenges that have hindered widespread adoption of UHTHP in industry, explore potential improvements and solutions, and discuss the feasibility. Current efforts aim to lay the ground for future research, development, and commercial deployment for UHTHP.

Keywords: Ultra-high-temperature heat pump (UHTHP); Mechanically driven heat pump (MDHP); Integrated energy system (IES); Industrial decarbonization (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2025.125384

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