Discharge experiments in a vertical storage tank with an immersed baffled heat exchanger

Julia Haltiwanger, Jane H. Davidson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A number of solar domestic hot water systems and many European combined space and water heating systems have heat exchangers placed directly in the storage fluid to charge and/or discharge the tank. Operation of the heat exchanger produces a buoyancy-driven flow within the storage fluid. With a view toward controlling the flow field to increase heat transfer, a cylindrical baffle was designed for an immersed coiled tube heat exchanger in a vertical storage tank. Measurement of heat transfer and thermal stratification are presented during discharge of the stored energy. Data with and without the baffle are compared. The baffle provides about a ten percent gain in the rate of energy extraction.

Original languageEnglish (US)
Title of host publicationAmerican Solar Energy Society - Solar 2007
Subtitle of host publication36th ASES Annual Conf., 32nd National Passive Solar Conf., 2nd Renewable Energy Policy and Marketing Conference: Sustainable Energy Puts America to Work
Pages134-141
Number of pages8
StatePublished - Dec 1 2007
EventSolar 2007: Sustainable Energy Puts America to Work, Including 36th ASES Annual Conference, 32nd National Passive Solar Conference and 2nd Renewable Energy Policy and Marketing Conference - Cleveland, OH, United States
Duration: Jul 8 2007Jul 12 2007

Publication series

NameAmerican Solar Energy Society - Solar 2007: 36th ASES Annual Conf., 32nd National Passive Solar Conf., 2nd Renewable Energy Policy and Marketing Conference: Sustainable Energy Puts America to Work
Volume1

Other

OtherSolar 2007: Sustainable Energy Puts America to Work, Including 36th ASES Annual Conference, 32nd National Passive Solar Conference and 2nd Renewable Energy Policy and Marketing Conference
CountryUnited States
CityCleveland, OH
Period7/8/077/12/07

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