Aggrey Mwesigye

Assistant Professor

Department of Mechanical and Manufacturing Engineering

PhD - Mechanical Engineering

University of Pretoria, 2015

MSc - Mechanical Engineering (Sustainable Energy)

Royal Institute of Technology, 2009

BSc - Mechanical Engineering

Makerere University, 2005

Contact information

Office hours

Open Calendar Policy

Preferred method of communication


Research and teaching

Research areas

  • Renewable and Sustainable Energy Systems
  • Design and Optimization of Sustainable Thermal Energy Systems
  • Thermal Energy Storage
  • Alternative Space Heating and Cooling Systems
  • Solar Thermal Energy Systems

Research areas descriptions

Design and Optimization of Sustainable Thermal Energy Systems
Research activities include

  • Energetic and exergetic optimization of compressed thermal energy storage systems
  • Trigeneration and polygeneration systems
  • Building integrated renewable energy systems

Thermal Energy Storage
Research activities include

  • Design and optimization of thermal energy storage systems
  • Phase change material for space heating applications
  • Packed bed thermal energy storage systems

Alternative Space Heating and Cooling Systems
Research activities include

  • Thermodynamic analysis and optimization of ejector refrigeration
  • Ground source heat pump systems
  • Solar thermal heating and cooling
  • Direct expansion heat pump systems

Solar Thermal Energy
Research activities include

  • Concentrating solar thermal systems
  • Solar thermal systems for space heating and cooling
  • Solar thermal cracking of natural gas
  • Solar process heat


Dr. Aggrey Mwesigye is an Assistant Professor in the Department of Mechanical Engineering at the University of Calgary since June 2021. Prior to that, he was an Assistant Professor at the University of Minnesota Duluth from January 2020 – May 2021, a postdoctoral research fellow in sustainable energy systems at Ryerson University from January 2018 to December 2019, and a Senior Lecturer at the University of the Witwatersrand from December 2015 – December 2017. Dr. Mwesigye received his BSc Mechanical Engineering (summa cum laude) from Makerere University, an MSc in Mechanical Engineering from the Royal Institute of Technology, and a Ph.D. in Mechanical Engineering from the University of Pretoria. He has broad research interests in the modeling, design, and optimization of sustainable thermal energy systems. Current research focuses on concentrating solar thermal systems, alternative heating and cooling systems, heat transfer enhancement, thermodynamic optimization, and thermal energy storage.


Google Scholar Profile
ResearchGate Profile

Selected Publications


Shukla S., Antoun S., Bayomy A.M., Mwesigye A., Wey H. L., Dworkin S.B. (2021). Performance characterization of novel caisson-based thermal storage for ground source heat pumps, Renew Energ 174, 43-54.

Nicholson S.R., Kober L.R., Pedram Atefrad, Mwesigye A., Dworkin S.B. (2020). The Influence of geometry on the performance of a helical steel pile as a geo-exchange system, Renew Energ 172, 714-727.


Mwesigye A. and Yılmaz İ.H. (2020). Thermal and thermodynamic benchmarking of liquid heat transfer fluids in high concentration ratio parabolic trough solar collector systems, J. Mol. Liq 318, 114151

Mwesigye A., Kiamari A., and Dworkin S.B. (2020). Energetic Optimization and exergetic performance investigation of an ejector system using HFO-1233zd(E) as a refrigerant, Int J Refrig 112, 155 – 171


Mwesigye A., and Dworkin S.B. (2019). Energetic and exergetic performance comparison of an ejector refrigeration system using modern low GWP refrigerants. In Conference Proceedings the ASME 2019 International Mechanical Engineering Congress and Exposition (IMECE2019), November 11-14, 2019, Salt Lake City, UT, USA.


Mwesigye A., and Dworkin S.B. (2018). Performance analysis and optimization of an ejector refrigeration system using alternative working fluids under critical and subcritical operation modes, Energy Convers Manage 176, 209-226.

Mwesigye A., and Yılmaz İ.H. (2018). Modeling, simulation and performance analysis of parabolic trough solar collectors: A systematic review, A systematic review, Appl Energ 225,137-174

Mwesigye A., Yılmaz İ.H., and Meyer J.P. (2018). Numerical analysis of the thermal and thermodynamic performance of a parabolic trough solar collector using SWCNTs-Therminol®VP-1 nanofluid, Renew Energ 119, 844-862.



Highly Cited Review Paper in Applied Energy, Applied Energy, Elsevier


Most Highly Cited Researcher in the Faculty Engineering and the Built Environment at the University of the Witwatersrand


Most Valued Reviewer Award for 2016, Renewable Energy - An International Journal, Elsevier

Institutional Researcher in Training of the Year, Tshwane University of Technology, Senate Committee for Research, and Innovation


Best Paper Award, 5th International Conference on Applied Energy (ICAE2013), Applied Energy, Elsevier.


Best graduating student in Mechanical Engineering, Uganda Institute of Professional Engineers, Uganda