AERIAL MEASUREMENTS OF CONVECTION CELL ELEMENTS IN HEATED LAKES

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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 ... continued below

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Villa-Aleman, E; Saleem Salaymeh, S; Timothy Brown, T; Alfred Garrett, A; Malcolm Pendergast, M & Linda Nichols, L December 19, 2007.

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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.

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  • SPIE Defense and Security, Thermosense XXX

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  • Report No.: WSRC-STI-2007-00717
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 922654
  • Archival Resource Key: ark:/67531/metadc902544

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  • December 19, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 2, 2016, 5:13 p.m.

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Villa-Aleman, E; Saleem Salaymeh, S; Timothy Brown, T; Alfred Garrett, A; Malcolm Pendergast, M & Linda Nichols, L. AERIAL MEASUREMENTS OF CONVECTION CELL ELEMENTS IN HEATED LAKES, article, December 19, 2007; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc902544/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.