Matt Mitchell

Matt Mitchell

Researcher III-Model Engineering


Matt joined NREL in 2019 as a member of the Building Energy Science Group. He works on development of EnergyPlus® and helps facilitate submodel development and integration into EnergyPlus, as well as integration of EnergyPlus with other simulation tools.

Prior to working at NREL, Matt was a research engineer at Oklahoma State University where he designed and performed experiments and developed simulation models for  surface water heat pumps, ground source heat pumps, and pile energy systems. He also taught courses on thermal system design, heat transfer, and thermodynamics. Before that, Matt worked as a subcontractor for the Idaho National Laboratory where he worked on thermal-structural analysis and facility mechanical design.

Research Interests

Ground source heat pump systems

Building energy simulation

Thermal energy storage


Ph.D., Mechanical Engineering, Oklahoma State University

Featured Work

Characterization, testing, and optimization of load aggregation methods for ground heat exchanger response-factor models, Science and Technology for the Built Environment (2019)

Validation of borehole heat exchanger models against multi-flow rate thermal response tests, Geothermics (2018)

Predicting the performance of radiant technologies in attics: Reducing the discrepancies between attic specific and whole-building energy models, Energy and Buildings (2018)

Experimental development of natural convection heat transfer correlations for spiral-helical surface water heat exchangers, Science and Technology for the Built Environment (2017)

"Surface water heat pump systems," Advances in Ground-Source Heat Pump Systems, Woodhead Publishing (2016)

Open-loop direct surface water cooling and surface water heat pump systems—A review, HVAC&R Research (2013)