The Effect of Longitudinal Heat Conduction on Periodic-Flow Heat Exchanger Performance
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Authors
Bahnke, G.D.
Howard, C.P.
Subjects
Advisors
Date of Issue
1964-04
Date
Publisher
ASME
Language
Abstract
A numerical finite-difference method of calculating the effectiveness for the periodic-flow type heat exchanger accounting for the effect of longitudinal heat conduction in the direction of fluid flow is presented. The method considers the metal stream in crossflow with each of the gas streams as two separate but dependent heat exchangers. To accommodate the large number of divisions necessary for accuracy and extrapolation to zero element area, use was made of a general purpose digital computer. The values of the effectiveness thus obtained are good to four significant figures while those values for the conduction effect are good to three significant figures. The exchanger effectiveness and conduction effect have been evaluated over the following range of dimensionless parameters.
1.0 ≥ Cmin/Cmax ≥ 0.901.0 ≤ Cr/Cmin ≤ ∞1.0 ≤ NTU0 ≤ 1001.0 ≥ (hA)* ≥ 0.251.0 ≥ As* ≥ 0.250.01 ≤ λ ≤ 0.32
Type
Article
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
15 p.
Citation
Bahnke, G. D., and C. P. Howard. "The effect of longitudinal heat conduction on periodic-flow heat exchanger performance." Journal of Engineering for Power 86.2 (1964): 105-117.
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Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.