Tin Shui Wai Hospital in Hong Kong, China. Effective Energy Utilization of Health-Care Facilities BY WALLACE LEUNG, MEMBER ASHRAE Built to meet the population growth and medical needs of the New Territories West Cluster of Hong Kong, Tin Shui Wai Hospital (TSWH) is a new 10-story health-care facility that serves as the main medical institution in this district of Tin Shui Wai and was designed with respect to energy effi cient technology and renewable energy technology features that aim to reduce operating cost and carbon emissions. Energy Effi ciency TSWH was designed for high energy effi - ciency according to ASHRAE Standard 90.1 and ASHRAE's HVAC Design Manual for Hospitals and Clinics. The sustainable elements include the building envelope; energy effi cient mechanical, electrical and plumbing (MEP); building energy management system and renewable energy system. Wallace Leung is a senior engineer in the Hong Kong Government of China. 34 ASHRAE JOURNAL ashrae.o rg D E C E M B E R 2 0 2 2 Building Envelope The building envelope adopted a low windowto-wall ratio of 0.295 and glazing that had a low shading coeffi cient of 0.31, which were 55% and 52% lower than the baseline building model set to achieve an overall thermal transfer value (OTTV) that barely met the threshold stipulated in the Code of Practice for OTTV in Buildings that is issued by the Building Authority of Hong Kong. 2022 ASHRAE Technology Awards | Honorable Mentionhttp://ashrae.org