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TCAAP Energy Integration Resiliency Framework <br />Policy White Paper – Exhibit I - Definitions <br /> <br /> 70 <br />Source Energy - The total amount of raw fuel that is required to operate an energy-using device or facility. <br />Source energy includes all transmission, delivery, and production losses, thereby enabling a complete <br />assessment of energy efficiency in a building. On the other hand, “Site Energy” is the amount of heat and <br />electricity consumed by a building as reflected in utility bills. <br />Solar cooling – The use of solar thermal energy or solar electricity to power a cooling appliance. <br />Solar Photovoltaic Systems (PV) – Systems that directly convert sunlight into electricity either for use locally or <br />for delivery to the electric grid. <br />Solar Thermal – Systems that directly convert sunlight into heat, generally for domestic hot water though they <br />can also be used to produce space heating. <br />Substation – Facility equipment that switches, changes, or regulates electric voltage. <br />Sustainability - Meeting the needs of the present generation without compromising the ability of future <br />generations to meet their own needs. <br />Therm – One hundred thousand (100,000) Btu <br />Thermal energy – Energy that is generated and measured in the form of heat. <br />Thermal Energy Storage – The storage of heat energy during utility off-peak times at night, for use during the <br />next day without incurring daytime peak electric rates. <br />Thumb – That portion of the Rice Creek Commons development that is at the extreme northwest of the site, and <br />is separated from the remainder of the site by Rice Creek. <br />Transit Oriented Development (TOD) – Land development that takes into account transportation choices as a <br />means of reducing oil and other energy use. Typically it would combine public transit with walkable, mixed-use <br />communities, and approaches to minimize the impact of individual vehicles and commuting. <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.