Imperial College London


Faculty of EngineeringDepartment of Chemical Engineering

Research Associate



p.sapin Website




B432abcBone BuildingSouth Kensington Campus





Dr Paul Sapin received his MEng degree in 2010 in Mechanical/Thermal Engineering from ISAE-ENSMA, a Mechanical and Aeronautical Engineering School located in Poitiers, France.  He completed his Ph.D. in Fluid Mechanics and Heat Transfer at National Polytechnic Institute of Toulouse in 2014 after developing bespoke experimental facilities to quantify and deepen understanding of convective boiling heat transfer in porous media.

As the leader of the Energy division of the Clean Energy Processes (CEP) Laboratory, his research focuses on thermo-mechanical energy technologies, with applications to waste-heat recovery (e.g., organic Rankine cycle and hot-air engines), heat decarbonisation (e.g., mechanically- and thermally-driven heat pumps), and long-duration energy storage (e.g., compressed air and pumped heat/thermal electricity storage). He develops prototypes, experiments, as well as physics-based and data-driven models to reveal the untapped potential of existing technologies and unlock that of emerging, disruptive solutions.



Maghrabi A, Song J, Sapin P, et al., 2023, Electricity demand reduction through waste heat recovery in olefins plants based on a technology-agnostic approach, Energy Conversion and Management: X, Vol:20, ISSN:2590-1745, Pages:1-18

Mersch M, Sapin P, Olympios AV, et al., 2023, A unified framework for the thermo-economic optimisation of compressed-air energy storage systems with solid and liquid thermal stores, Energy Conversion and Management, Vol:287, ISSN:0196-8904, Pages:1-15

Olympios AV, Sapin P, Freeman J, et al., 2022, Operational optimisation of an air-source heat pump system with thermal energy storage for domestic applications, Energy Conversion and Management, Vol:273, ISSN:0196-8904, Pages:1-23


Handagama NB, White MT, Sapin P, et al., 2023, Renewable and waste-heat utilisation technologies, Cambridge University Press, ISBN:9781108691093


Sapin P, Olympios AV, Mersch M, et al., 2023, Paper No 715 - Design and operational optimisation of an integrated thermal energy storage ground-source heat pump with time-varying electricity prices, 14th IEA Heat Pump Conference 2023

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