Imperial College London


Faculty of EngineeringDepartment of Chemical Engineering

Research Associate







ACE ExtensionSouth 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. The topic of his Ph.D. thesis was convective boiling heat transfer in porous media.

As a Post-Doctoral Research Associate in the Clean Energy Processes (CEP) Laboratory, his research focuses on the use of reciprocating-piston devices in energy-storage (e.g. compressed air, liquid air and pumped thermal electricity storage) and waste-heat recovery (e.g. organic Rankine cycle) technologies. Through the use of joint experimental and numerical approaches, his research aims (i) at understanding and predicting loss mechanisms in such engines and (ii) at developing design tools and innovations to mitigate these losses. 



Nemati H, Moghimi MA, Sapin P, et al., 2020, Shape optimisation of air-cooled finned-tube heat exchangers, International Journal of Thermal Sciences, Vol:150, ISSN:1290-0729, Pages:1-14

Kadivar MR, Moghimi MA, Sapin P, et al., 2019, Annulus eccentricity optimisation of a phase-change material (PCM) horizontal double-pipe thermal energy store, Journal of Energy Storage, Vol:26, ISSN:2352-152X

Pantaleo A, Simpson M, Rotolo G, et al., 2019, Thermoeconomic optimisation of small-scale organic Rankine cycle systems based on screw vs. piston expander maps in waste heat recovery applications, Energy Conversion and Management, Vol:200, ISSN:0196-8904

Simpson M, Chatzopoulou M, Oyewunmi O, et al., 2019, Technoeconomic analysis of internal combustion engine - organic Rankine cycle systems for combined heat and power in energy-intensive buildings, Applied Energy, Vol:253, ISSN:0306-2619, Pages:1-13

Unamba CK, Sapin P, Li X, et al., 2019, Operational optimisation of a non-recuperative 1-kWe organic Rankine cycle engine prototype, Applied Sciences, Vol:9, ISSN:2076-3417, Pages:3024-3024

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