Discharge of Thermal Storage Tanks via Immersed Baffled Heat Exchangers: Numerical Model of Flow and Temperature Fields-Reference-Cited by-同舟云学术

Discharge of Thermal Storage Tanks via Immersed Baffled Heat Exchangers: Numerical Model of Flow and Temperature Fields

Published:2008-04-11 Issue:2 Volume:130 Page:
ISSN:0199-6231
Container-title:Journal of Solar Energy Engineering
language:en
Short-container-title:

Author:

Su Yan¹,Davidson Jane H.¹

Affiliation:

1. Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455

Abstract

A model of a thermal storage tank in which stored energy is extracted via an immersed heat exchanger is presented and used to predict transient temperature and velocity fields in tanks with and without baffles. The heat exchanger is modeled as a porous medium within the storage fluid. A simple cylindrical baffle that creates an annular space in which a coiled tube heat exchanger is positioned provides a modest increase in the rate of energy extraction compared to a tank with no baffle. The improved discharge rate is attributed to an increase in the flow speed across the heat exchanger. A baffle with greater hydraulic resistance slows the flow and reduces performance.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Link

http://asmedigitalcollection.asme.org/solarenergyengineering/article-pdf/doi/10.1115/1.2856012/5738767/021016_1.pdf

Reference19 articles.

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5. Natural Convective Flow and Heat Transfer in a Collector Storage With an Immersed Heat Exchanger: Numerical Study;Su;ASME J. Sol. Energy Eng.

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