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I he object of a refrigeration cycle is to produce a JL cooling effect, to maintain environmental or process conditions at desired levels. In the cycle, heat is extracted from the space or medium being cooled to the refrigerant in the evaporator. This is sometimes referred to as the cold-, low- (pressure) or suction-side of the cycle. The evaporator may provide direct or indirect heat extraction from a space or process. For large facilities and large processes, brine or chilled water usually serve as the indirect cooling medium.

This chapter focuses on the evaporators and chilled water systems, with emphasis on chilled water distribution systems and design strategies. Also included is a discussion of other types of cooling optimization strategies including water-side economizer cycles, to obtain "free" cooling effect when ambient conditions permit, and thermal energy storage to reduce peak electric demand and/or balance system operation.

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

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