floor/ceiling/wall radiation or radiant panels). supply air systems, perimeter fin-tube "radiators"), or by heating the occupants directly by radiation (e.g. Heating can be accomplished by heating the air within a space (e.g. Controls determine how HVAC systems operate to meet the design goals of comfort, safety, and cost-effective operation. A fourth discipline, Controls, pervades the entire HVAC field. The term HVAC refers to the three disciplines of Heating, Ventilating, and Air-Conditioning. The integrated design process can provide the means to facilitate early consideration of wind loading, vibration, blast and seismic considerations pertaining to rooftop HVAC equipment. There are also considerable opportunities for significant energy savings through efficient, integrated design, especially at the building envelope.Īn integrated and efficient building envelope with appropriate window and glazing design can not only reduce the energy and operating costs of a facility, but can also reduce the size and cost of the HVAC system needed to maintain adequate building pressurization, good indoor air quality and a comfortable thermal environment for building occupants.Īn often overlooked component of the building envelope is the relationship of the roofing system with the large HVAC equipment that is often mounted on the roof. Consequently, almost any business or government agency has the potential to realize significant savings by improving its control of HVAC operations and improving the efficiency of the system it uses. Heating, ventilating, and air-conditioning (HVAC) systems account for nearly 40% of the energy used in commercial buildings in the United States.
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