Westminster High School M/E Systemic Replacement
Westminster High School was constructed and occupied by 1971. The building is multiple stories and consists of approximately 337,050 square feet. The rated capacity is 1800 occupants. The existing systems, except for the chillers and cooling tower, are original and beyond their useful lives. The existing systems and equipment are not energy-efficient and do not maintain indoor temperature set-points. The existing systems in their entirety need to be replaced. The Gymnasium section is not currently air-conditioned and/or dehumidified. The building is heated in its entirety by electric resistance heaters. The intent of the Scope of Work is to replace the HVAC System, provide air conditioning / dehumi-dification in the Gymnasium section, and develop an energy-conserving system which can be constructed in phases, while the building is occupied. Various system concepts were developed with four (4) alternate solutions being analyzed. Recommended System: Hybrid Geothermal, Water-to-Water HP’s, 4 Pipe Distribution Using Fan Coil and Air Handling Units – this includes: Central Hot Water Boiler Plant serving AHU’s and Terminal Heating Units (unit heaters, cabinet unit heaters, baseboard radiation, convectors, fan coil units, etc.); Central Chilled Water Plant (500 Tons) reusing existing Cooling Tower; Geothermal Plant using Water-to-Water Heat Pumps for Chilled Water (600 Tons) and Low Temperature Heating Water (115 deg F); Air Distribution Systems: Classrooms & Offices: Four-Pipe (Chilled Water/Low Temperature Heating Water) Fan Coil Units with DOAS (100% Outside Air Heat Recovery Units); Gymnasium and Auditorium: Four-Pipe (Chilled Water /Heating Water) Heat Recovery Type Air Handling Units.
The Mechanical Systems include all work associated within the building of Heating, Ventilating, Air Conditioning (HVAC), and Plumbing Systems. These systems will extend to 5 feet beyond the building wall. The Mechanical Systems, in concert with the Architectural considerations, are intended to create spaces that are flexible, functional, energy efficient, and respond to the needs of this facility. Within the envelope of the new facility, the proper heating, cooling, ventilation, air exchanges, and Automatic Temperature Control/Energy Management Systems were provided for all spaces to create the appropriate thermal environment. Stairwells were provided with heat only. All areas were provided with heating, ventilation, and air conditioning. The HVAC and related Mechanical Systems will be functional and responsive to the need, but will be simple, reliable, durable, maintainable, and easily accessible. The HVAC System utilizes energy conservation techniques to the greatest extent possible, while maintaining comfortable control. All HVAC components are capable of a complete override from the Energy Management System. Heating and Cooling Systems and their associated controls are designed and zoned to enable the building to operate at less than full occupancy without conditioning the entire building. The Mechanical Systems was designed in accordance with ASHRAE Standards, Carroll County Code Requirements, and IAC Standards.
The proposed system utilizes gas-fired hot water boilers for heating, water-cooled chillers for cooling, and geothermal water-to-water heat pumps for supplemental cooling and waste condenser water heat reclaim. Due to the limited infrastructure space, the recommended air distribution system includes four pipe fan coil units used in conjunction with dedicated outdoor air systems for classrooms and offices and heat recovery air handling units for the gymnasium and auditorium areas.
The proposed construction phase began January of 2009 and extends through December of 2011 or 36 months of construction (155 weeks). This is based on six (6) classroom construction sequences. There may be limited opportunities to shorten the construction schedule to be completed by August 2011; however, 12 classrooms would be required to be renovated in a 6-week construction sequence. The ten (1) week summer construction sequences are extremely aggressive. Summer construction sequences include areas which are core spaces (dining, lockers/gym, auditorium, office/lobby, media center, etc.), leaving all classroom areas to be renovated during the school year, including Fine Arts Classrooms, Science Classrooms/Lab Areas, etc
Construction Cost: $23 million
Project Type: K-12,
