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Proceedings Paper

Aerial measurements of convection cell elements in heated lakes
Author(s): E. Villa-Aleman; S. R. Salaymeh; T. B. Brown; A. J. Garrett; L. S. Nichols; M. M. Pendergast
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Paper Abstract

Power plant-heated lakes are characterized by a temperature gradient in the thermal plume originating at the discharge of the power plant and terminating at the water intake. The maximum water temperature discharged by the power plant into the lake depends on the power generated at the facility and environmental regulations on the temperature of the lake. Besides the observed thermal plume, cloud-like thermal cells (convection cell elements) are also observed on the water surface. The size, shape and temperature of the convection cell elements depends on several parameters such as the lake water temperature, wind speed, surfactants and the depth of the thermocline. The Savannah River National Laboratory (SRNL) and Clemson University are collaborating to determine the applicability of laboratory empirical correlations between surface heat flux and thermal convection intensity. Laboratory experiments at Clemson University have demonstrated a simple relationship between the surface heat flux and the standard deviation of temperature fluctuations. Similar results were observed in the aerial thermal imagery SRNL collected at different locations along the thermal plume and at different elevations. SRNL will present evidence that the results at Clemson University are applicable to cooling lakes.

Paper Details

Date Published: 17 March 2008
PDF: 9 pages
Proc. SPIE 6939, Thermosense XXX, 69390S (17 March 2008); doi: 10.1117/12.778367
Show Author Affiliations
E. Villa-Aleman, Savannah River National Lab. (United States)
S. R. Salaymeh, Savannah River National Lab. (United States)
T. B. Brown, Savannah River National Lab. (United States)
A. J. Garrett, Savannah River National Lab. (United States)
L. S. Nichols, Savannah River National Lab. (United States)
M. M. Pendergast, Savannah River National Lab. (United States)

Published in SPIE Proceedings Vol. 6939:
Thermosense XXX
Vladimir P. Vavilov; Douglas D. Burleigh, Editor(s)

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