Many of the government buildings in the territory were completed in the sixties and seventies when Hong Kong’s economy took off. Today, most of the E&M facilities in these buildings are ageing gradually. With the mission of satisfying our clients’ needs and serving the public, EMSD is committed to ensuring that our clients’ services to the community will not be disrupted by equipment failure due to ageing. Apart from proper maintenance and regular replacement services, we proactively assist our clients in formulating back-up solutions for contingencies, overcoming technical difficulties, as well as enhancing and redesigning the existing systems. Our aim is to provide safe and reliable E&M facilities to enhance our clients’ services to the public.
The air-conditioning system of the Hong Kong City Hall (City Hall) mainly uses seawater for cooling. As the pipelines circulating seawater are buried deep underground, any damage in the pipelines will stop the water-cooled chiller. This will not only disrupt the air-conditioning operation, but also affect the traffic as immediate road closure may be required for emergency repair.
As a precaution, we designed a remote condensing system as a back-up plan. After careful study, our team installed two remote air-cooled condensers on the rooftop of the City Hall Low Block. We modified the existing refrigerant pipelines to connect the condensers to the central unit. When the seawater supply is interrupted or insufficient, the system can quickly take over the existing water-cooled condensers and the air-conditioning operation can resume in a short period of time. The system also allows ample time for maintenance and repair work to be conducted on the seawater pipelines, without affecting the services of the City Hall.
The contingency plan is an integral part of our comprehensive engineering and asset management solution for our clients. It effectively ensures their quality services to the public.
If you are interested in enhancing your existing facilities, please contact our Senior Engineer, Mr. Yorkie Chow, at 2808 3804.