Research Article
Oct 1979
Heat Recirculation Induced by Thermal Diffusers
Authors: Joseph H. W. Lee, Donald R. F. Harleman, M.ASCE, and Gerhard H. Jirka, AM.ASCEAuthor Affiliations
Publication: Journal of the Hydraulics Division
Volume 105, Issue 10
Abstract
A unidirectional multiport thermal diffuser discharges large quantities of condenser cooling water in the form of a line of turbulent heated jets near the bottom of the receiving waterbody. The large momentum input induces a large mixed flow compared with the discharge flow, causing rapid temperature reduction within a relatively small area. This paper presents the results of an experimental study which demonstrates that under certain conditions the large back entrainment demand coupled with momentum dissipation (due to bottom friction) of the diffuser plume may generate recirculation of the mixed flow back into the near field, leading to temperatures significantly higher than previously predicted. Length and time scales of recirculation are estimated: the transient maximum temperature rise is correlated with the length scale of recirculation and the sink strength.
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Published In
Journal of the Hydraulics Division
Volume 105 • Issue 10 • October 1979
Pages: 1219 - 1231
Copyright
© 1979 American Society of Civil Engineers.
History
Published in print: Oct 1979
Published online: Feb 3, 2021
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Authors
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Joseph H. W. Lee
Asst. Prof., Univ. of Delaware, Newark, Del.
Donald R. F. Harleman, M.ASCE
Prof. of Civ. Engrg., Mass. Inst. of Tech., Cambridge, Mass.
Gerhard H. Jirka, AM.ASCE
Asst. Prof., School of Civ. and Environmental Engrg., Cornell Univ., Ithaca, N.Y.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.