Marcus is a senior research engineer with the Building Energy Science Group. He is a thermal energy expert and employs his background to conduct research in thermal sciences modeling, analysis, and testing of advanced building envelope components and systems to improve the energy performance of buildings. He conducts business development for the Buildings and Thermal Sciences Center in collaborations and partnerships with external organizations to support their common objectives in energy efficiency and generation.

Marcus returned to NREL in 2019 after eight years at Owens Corning, where he was a member of and led the Building Science team, defining strategic objectives to influence and support corporative objectives and improve the building industry.

Marcus is active at ASHRAE, where he was chair of Technical Committee 4.4—Building Materials and Building Envelope Performance. He is also a licensed professional engineer in Colorado.

Research Interests

Energy fundamentals

Heat and mass transfer

Thermodynamics

Phase change

Building science

Thermal insulation

Education

Ph.D., Mechanical Engineering, Purdue University

M.S., Mechanical Engineering, Pontifical Catholic University of Rio de Janeiro, Brazil

B.S., Mechanical Engineering, Military Institute of Engineering, Brazil

Featured Work

Thermal Performance of Commercial Roofs: Thermal Insulation and Solar Reflectivity, II International Symposium of Architecture and Engineering of Building Envelopes, Pontificia Universidad Catolica de Santiago, Chile (2017)

Verification and Validation of EnergyPlus Phase Change Material Model for Opaque Wall Assemblies, Building and Environment (2012)

Technical Barriers, Gaps, and Opportunities Related to Home Energy Upgrade Market Delivery, NREL Technical Report (2011)