Mechanical and electrical engineering services, consisting of survey of the existing HVAC system and preparation of construction documents related to the replacement of the existing HVAC system serving the 110,000 square foot, four-story Acute Care Facility (ACF) wing of the hospital.
- Survey of the existing HVAC and related electrical system serving the ACF wing. The existing system is a water loop heat pump system. The heat pump units are scattered in four mechanical rooms throughout the building. The existing system is inefficient and in constant need of repair.
- The existing auxiliary heating is provided by a steam to hot water heat exchanger in the basement. A roof mounted cooling tower serves the existing water loop heat pump system.
- The new four pipe HVAC system has been designed. New steam to hot water heat exchanger was selected as the source of heat (steam is provided from the central plant at the site). A 240 ton split air cooled chiller is provided as the source of cooling.
- Total of nine Air handling Units (AHUs) has been selected and located in the mechanical rooms to serve the entire building. The AHUs were zoned based on the space requirements. Seven air handling units are Variable Air Volume (VAV) and the remaining two smaller AHUs are constant volume.
- Existing air distribution system was modified in order to accommodate the new AHUs and VAV terminal boxes located in the ceiling space. Most of the VAV terminal boxes were equipped with the hydronic heating coils.
- The electrical system serving the HVAC system was modified to accommodate the new equipment.
- Modification of the air temperature control system in order to accommodate the new HVAC system.