News & Events

The webinar recording will be available at HKGBC CPD Online Training Portal (https://onlinecpdtraining.hkgbc.org.hk/) later after the event.

This webinar is organised by the Hong Kong Green Building Council.

(1)  Passive Radiative Cooling Technology

To provide a sustainable and energy-saving solution to the consumption of electricity in buildings, CityU research team has developed a passive radiative cooling paint, using the universe as a cooling source. Unlike traditional air-conditioning system, the passive radiative cooling paint is an energy-free and refrigerant-free cooling technology that reflects incoming solar irradiance, while emitting thermal radiation to the cold universe and achieving sub-ambient cooling. This self-cooling technology possesses many advantages, such as a simple structure, easy manufacturing and low cost. Directly coating this paint on a building’s roof or exterior walls will reduce its surface temperature and save on air-conditioning energy.

The technology received the Gold Medal with Congratulations of the Jury award at Inventions Geneva Evaluation Days (IGED) 2021.

(2) Intelligent Thermo-responsive Windows

This novel smart window can autonomously regulate solar transmittance in response to the outside temperature. The smart window is transparent in cold weather, allowing solar radiation to pass through to warm a room, and is opaque in hot weather, blocking solar radiation to prevent overheating. This invention can promote the development of energy-efficient and sustainable buildings.

The technology received the Gold Medal award at Inventions Geneva Evaluation Days (IGED) 2022.

Speaker: Dr Edwin TSO, School of Energy and Environment, CityU

Dr. TSO received his Bachelor’s degree in Mechanical Engineering (First class), MPhil degree in Environmental Engineering and PhD degree in Mechanical Engineering from The Hong Kong University of Science and Technology (HKUST) in 2010, 2012 and 2015, respectively. He was awarded the Fulbright – Research Grant Council (RGC) Hong Kong Research Fellowship in 2014, and studied at the University of California, Berkeley (UC Berkeley) in 2015. After he came back from the UC Berkeley, he was a Research Associate at the Department of Mechanical and Aerospace Engineering (MAE), HKUST from 2015-2016, and promoted to the rank of Research Assistant Professor (2016-2018) before he joined CityU in Sep of 2018 as an Assistant Professor. He was also a Junior Fellow at the HKUST Jockey Club Institute for Advanced Study from 2016-2018 when he was at HKUST. Dr. TSO’s research interest covers thermofluid, heat transfer, energy and built environment, and energy efficient building technology, particularly, in the fields of adsorption technology, thermal diodes/switches, nanofluids/hybrid nanofluids, thermochromic smart windows and passive radiative cooling using numerical simulations as well as advanced experimental techniques. Dr. TSO is also active in entrepreneurship and technology transfer, and has been involved in setting up a start-up in 2012.

Dr. TSO focuses on understanding the fundamentals of heat transfer, energy conversion and engineered material science with the target of integrating theory and experiments to create innovative solutions to enhance thermal management, built environment, space cooling and refrigeration, micro-droplet manipulation and energy-efficient building technologies, making a great and global impact by addressing the biggest needs and issues in our world.