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A Comparison of Open Versus Closed Systems in Thermal Storage Applications
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The use of thermal storage, by its very nature, requires a large storage vessel. Depending upon the technology employed, this can vary from as little as 1.6cuft./ton-hour, up to 15cuft./ton-hour. The result can be storage tanks with volumes into the millions of gallons. The majority of the technologies on the market today employ an atmospheric (open) storage tank, while a limited number use a closed storage tank, operating at system pressure. The purpose of this paper is to discuss the relative advantages and disadvantages of both methods. The comparison will encompass the following: 1. Equipment and Installation Costs 2. Mechanical Design 3. Pumping Requirements 4. Control Requirements 5. Water Treatment
Salbodkin, A. (1990). A Comparison of Open Versus Closed Systems in Thermal Storage Applications. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from