Chandra Sekhar, Ph.D., Fellow ASHRAE & ISIAQ, is currently a Professor and Programme Director (MSc-Building Performance and Sustainability) and co-director (Centre for September 6, 2021 Integrated Building Energy and Sustainability in the Tropics) in the Department of the Built Environment at the National University of Singapore. He is also a founding director of Enhanced Air Quality Pte Ltd., a NUS spin-off company. His research interests include thermal comfort, ventilation and IAQ, airborne infection control, energy efficient HVAC systems and building energy analysis. He has about 300 publications in these fields in international journals and conferences. He is a co-inventor and holds 3 US and other patents. He has delivered several Keynote talks in international conferences around the world. He has been an ASHRAE Distinguished Lecturer since 2006 and is regularly invited as a speaker around the world. He has been recognised through several awards from ASHRAE, SHASE Japan, ASEAN and Singapore. He was a Director-At-Large (2018-2021) on the ASHRAE Board of Directors and has served the ASHRAE Singapore Chapter in various capacities, including as its President during 2010-2011 and as a BOG member. He is active in Standards and Technical committees in ASHRAE and is also actively involved in standardization activities in Singapore.