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TCAAP Energy Integration Resiliency Framework <br />Exhibits <br /> <br /> <br /> 101 <br />Waste Heat Recovery – An energy conservation system whereby some space heating or water heating is done by <br />actively capturing byproduct heat that would otherwise be ejected into the environment. In nonresidential <br />buildings, sources of waste heat include refrigeration/air-conditioner compressors, manufacturing or other <br />processes, data processing centers, lighting fixtures, ventilation exhaust air, and the occupants themselves. Not <br />to be considered is the passive use of radiant heat from lighting, workers, motors, ovens, etc., when there are <br />no special systems for collecting and redistributing heat. <br />Water source heat pump – A type of (geothermal) heat pump that uses well (ground) or surface water as a heat <br />source. Water has a more stable seasonal temperature than air thus making for a more efficient heat source. <br />Variable Air Volume (VAV) – An HVAC system that has a stable supply-air temperature, and varies the air flow <br />rate to meet the temperature requirements. Compared to constant air volume (CAV) systems, these systems <br />conserve energy through lower fan speeds during times of lower temperature control demand. <br />Variable frequency drive – an electronic controller that controls the speed of an electric motor by modulating <br />input frequency and voltage to match motor speed to the specific demands of the work being performed.