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cooling in the summer. System components include open or closed loops of pipe, coils or <br /> plates; fluid that absorbs and transfers heat; and a heat pump unit that processes heat for <br /> use or disperses heat for cooling; and an air distribution system. Also sometimes referred <br /> to as a Geothermal System. <br /> HEAT TRANSFER FL UID. A non-toxic and food grade fluid such as potable <br /> water, aqueous solutions of propylene glycol not to exceed 20% by weight or aqueous <br /> solutions of potassium acetate not to exceed 20% by weight. <br /> HORIZONTAL GROUND SOURCE HEAT PUMP SYSTEM. A closed loop <br /> ground source heat pump system where the loops or coils are installed horizontally in a <br /> trench or series of trenches no more than 20 feet below the land surface. <br /> OPEN LOOP GROUND SOURCE HEAT PUMP SYSTEM. A system that uses <br /> groundwater as a heat transfer fluid by drawing groundwater from a well to a heat pump <br /> and then discharging the water over land, directly in a water body or into an injection <br /> well. <br /> VERTICAL GROUND SOURCE HEAT PUMP SYSTEM. A closed loop ground <br /> source heat pump system where the loops or coils are installed vertically in one or more <br /> borings below the land surface. <br /> (c) Solar Energy Systems Definitions <br /> BUILDING-INTEGRATED SOLAR ENERGY SYSTEM. A solar energy system <br /> that is an integral part of a principal or accessory building, rather than a separate <br /> mechanical device, replacing or substituting for an architectural or structural component <br /> of the building including, but not limited to, photovoltaic or hot water solar systems <br /> contained within roofing materials, windows, skylights and awnings. <br /> FLIISH-MOUNTED SOLAR ENERGY SYSTEM. A roof-mounted system <br /> mounted directly abutting the roo£ The pitch of the solar collector may exceed the pitch <br /> of the roof up to 5%but shall not be higher than ten inches above the roof. <br /> PASSIVE SOLAR ENERGY SYSTEM. A system that captures solar light or heat <br /> without transforming it to another form of energy or transferring the energy via a heat <br /> exchanger. <br /> PHOTOVOLTAIC SYSTEM. A solar energy system that converts solar energy <br /> directly into electricity. <br /> SOLAR ENERGY SYSTEM. A device or structural design feature, a substantial <br /> purpose of which is to provide daylight for interior lighting or provide for the collection, <br /> storage and distribution of solar energy for space heating or cooling, electricity <br /> generation or water heating. <br /> Page 2 of 7 <br />