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<br />w <br /> <br />CJ1 <br /> <br />~ Another concept would combine the electric generation with an open-cycle <br /> <br /> <br />condenser configuration which could provide fresh water as a secondary <br /> <br />output from an electric generation solar pond. <br /> <br />Buildings <br /> <br />Solar ponds can serve a variety of building applications including' <br />Service hot water <br /> <br />Swimming pool heating <br /> <br /> <br />Direct space heating <br /> <br />Space heating with heat pump assist <br /> <br /> <br />Space cooling (absorption, Rankine, dessicant) <br /> <br />The distribution system used with the salt gradient solar ponds probably <br /> <br />would resemble the district heating systems already widespread in Europe. <br /> <br /> <br />These central distribution systems consist of large underground insulated <br /> <br /> <br />pipes with feeder lines for delivering hot water to each dwelling. <br /> <br /> <br />Individual units are usually coupled to this central system through heat <br /> <br /> <br />exchangers in order to isolate the delivery point from possible failures in <br /> <br />the central unit (heat pumps or auxiliary heating units may be needed to <br /> <br /> <br />augment the pond). <br /> <br />Solar pond heat may be used to operate space cooling equipment by applying <br /> <br />the heat directly to energize absorption refrigeration equipment, or by <br /> <br /> <br />Rankine-cycle conversion to mechanical or electrical energy to power con- <br /> <br /> <br />ventional vapor compression equipment. <br /> <br />Solar pond space cooling is primarily applicable to institutional, com- <br /> <br /> <br />mercial and industrial buildings in less dense areas. Residential <br /> <br /> <br />applications will be limited to apartment complexes and condominiums unless <br /> <br />a "district heating" approach is adopted. <br /> <br />-7- <br />