Heat transfer in condensing, pulsating flows

The internal heat transfer coefficient in a pulsating circular pipe flow was determined for both dry and condensing surfaces. The fully-reversing flow was driven by a pulse combustion process at a frequency of 34 Hz. The mean Reynolds numbers ranged from approximately 2600 to 4300, while the instant...

Full description

Saved in:
Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 45; no. 1; pp. 57 - 65
Main Authors Hommema, Scott E., Temple, Keith A., Jones, James D., Goldschmidt, Victor W.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.01.2002
Elsevier
Subjects
Applied sciences
Combustion
Condensation
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat transfer
Pipe flow
Pulsatile flow
Reynolds number
Theoretical studies. Data and constants. Metering
Circular pipe
Combustion
Two phase flow
Reynolds number
Heat transfer
Pulsating flow
Online AccessGet full text

Cover

More Information
Summary:The internal heat transfer coefficient in a pulsating circular pipe flow was determined for both dry and condensing surfaces. The fully-reversing flow was driven by a pulse combustion process at a frequency of 34 Hz. The mean Reynolds numbers ranged from approximately 2600 to 4300, while the instantaneous Reynolds number had a maximum of 18,000. The internal heat transfer is noted to increase by up to a factor of 1.8 due to the pulsating flow prior to the onset of condensation, and by up to 12 times after the onset of condensation. At all Reynolds numbers and flow regimes tested, the flow pulsations were observed to enhance heat transfer when compared to steady flow results.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(01)00132-6