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WASTE HEAT MANAGEMENT IN THE ELECTRIC POWER INDUSTRY

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WASTE HEAT MANAGEMENT IN THE ELECTRIC POWER INDUSTRY ( waste-heat-management-inelectric-power-industry )

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the size and type of cooling water body. This data brings out several interesting points. First, the use of once-through cooling, which accounted for approx- imately 65% of the cooling in 1975, will account for only 16% by 2000. This change can be attributed to several factors, including the decreasing availability of suitable sites on large bodies of water, and the influence of state and federal water quality standards which discourage use of once- through cooling. While once-through cooling will still be the second most popular system, the new sites employing this mode will be located almost exclusively on the Great Lakes and coasts. Second, the vast majority of closed cycle cooling, as presently proposed, will be by natural and mechanical draft evaporative (wet) towers. Other forms of evaporative closed cycle cooing such as on- or off-stream cooling ponds or various types of mixed modes show relatively minor increases due largely to complexities governing their design (as compared to modularized construction of mechanical draft towers) and due to the endorsement of wet towers by EPA as "Best Available Technology". Third, a small but significant fraction of new plants are slated to employ dry cooling, either by itself, or in combination with wet cooling. 1.9 Outline of MIT's Research The research program at MIT has been designed to help broaden the mix of feasible cooling system beyond that outlined in Fig. 1-9 above. A motivation for this research is the recognition that the ability to design and predict the performance of once-through and wet cooling tower systems is well developed as a result of intensive research, development

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WASTE HEAT MANAGEMENT IN THE ELECTRIC POWER INDUSTRY

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