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Title: Energy conservation with chilled-water storage

Journal Article · · ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States)
OSTI ID:6589301

Thermal energy storage (TES) is widely recognized as a demand-side management technology for shifting cooling electrical demand from peak daytime periods to off-peak nighttime and weekend periods when utilities have reserve generating capacity. TES has enabled users to significantly reduce their electricity costs by reducing peak demand and taking advantage of lower off-peak usage rates, often with large utility incentive payments and sometimes with reduced capital costs. It has also enabled utilities to reduce peaks and fill valleys, thereby improving system load factors, reducing reliance on peaking units, increasing utilization of base load units and postponing the construction of additional generating units. Because TES has been so strongly categorized as a demand-shifting technology, its potential for energy conservation has received little recognition. And, certainly, there are many existing TES systems that use more electricity than conventional cooling systems and are beneficial only for shifting demand. However, recent advances in the technology have produced more efficient and better integrated TES systems that use less electricity and natural gas than conventional cooling/heating systems. To apprise engineers of thermal energy storage's potential for energy conservation, this article will study the design and operation of a TES system in one industrial retrofit application.

OSTI ID:
6589301
Journal Information:
ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States), Vol. 35:5; ISSN 0001-2491
Country of Publication:
United States
Language:
English