Authors (including presenting author) :
Dicky YF POON (1), Way CW LAM (1), Aaron YH IP (1), Nikki SP LAU (1)
Affiliation :
Administrative Services Department - Facility Management Section, Queen Mary Hospital
Introduction :
Queen Mary Hospital began operation in 1937, and it is now a regional acute hospital as well as a teaching hospital for the Li Ka Shing Faculty of Medicine of the University of Hong Kong. Beside offering a comprehensive range of high-quality healthcare services to the community, it aims to capitalise on the combined expertise and research of the Hospital Authority and University to provide special tertiary and quaternary care and an appropriate environment, staff and facilities for educating, training and developing healthcare professionals and facilitating education and research.
To enhance the lighting system in Queen Mary Hospital, a lighting system improvement project was conducted by QMH-Facility Management Section and Electrical and Mechanical Services Trading Fund (EMSTF) – Health Sector Division to replace the conventional compact fluorescent lightings to Lighting Emitting Diode (LED) lightings. LED lightings were already proved much more energy efficient and durable comparatively, which can significantly reduce the energy consumption and maintenance cost.
Objectives :
With the new lighting system in place, we aim to reduce energy consumption for the lighting system in Queen Mary Hospital and achieve the 4Ts commitment for the Energy Saving Charter organized by HKSAR – Environment and Ecology Bureau (EEB) and carbon neutrality before 2050 with the target setup by HKSAR – EEB.
Methodology :
With the incorporation of smart lighting control features and the Automatic Wireless Lighting Control System (AWLCS), the newly installed LED lightings can allow for greater flexibility and achieve more energy savings. The lighting control program stores energy consumption data such that review could be done to optimize the energy savings. The smart lighting control integrated with sun light sensor can allow to fine tune and control the lux level for different areas, time schedule and grouping control for different lighting fixtures, which can provide the hospital with the best lighting performance under all weather and sunshine hours in different seasons. With the use of a lighting simulation program, different scenarios for the lighting control in indoor and outdoor during day time and night time can be simulated and adjusted to suit the operation in different buildings of the hospital. These smart lighting control features are able to facilitate daily hospital operations as well as reducing energy consumption.
Result & Outcome :
The LED lightings and smart lighting control system have already been installed in public and external areas of Block S, Block J and Block L, G/F and 1/F external areas of Main Block, Administration Block, Nurses’ Quarters, School of Nursing, New Clinical Building and Professorial Block and roadway of Queen Mary Hospital. With the new lighting system in place, we aim to reduce energy consumption of around 5 – 10 % annually for the lighting system in Queen Mary Hospital.
