Yiwen Di, LEED AP BD+C
Associate, Building Sciences


Yiwen is an indoor environment expert who investigates the contribution of air quality, and thermal comfort in the overall the quality of indoor environments. At Delos, Yiwen provides subject matter expertise in the domains of building science and technology.

Yiwen specializes in building performance analysis and optimization through whole building energy simulation, and life cycle analysis for energy efficiency. He is also an expert in HVAC system design, diagnosis, and modeling. Prior to joining Delos, Yiwen acquired extensive experience in building performance simulation through his work at Integrated Environmental Solutions (IES), which is recognized as a world leader in 3D performance analysis software. In 2017, he won the 1st prize of the International Building Performance Simulation Association (IBPSA) Virtual Building Triathlon Competition.

He holds a Master of Science in Architecture from Georgia Institute of Technology, and received his Bachelor of Civil Engineering from Tsinghua University in China. His work on ozone-initiated chemistry in indoor environment was presented at an international academic conference, and published in a peer-reviewed journal. He also received the Best Student Paper award at the 6th Chinese Society for Environmental Sciences – Indoor Environment and Health Branch (IEHB) annual conference.