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Title: Studies on mathematical models for characterizing plume and drift behavior from cooling towers. Volume 3. Mathematical model for single-source (single-tower) cooling tower drift dispersion

Abstract

This report presents a new salt-drift deposition model for single natural-draft cooling towers which has the advantages of improved theory and good performance with field data. Advantages to the model include: a submodel for cooling-tower plume rise which has been calibrated and validated with laboratory and field data; improved treatment of droplet evaporation which accounts for salt-concentration gradients within the drop; and an option to employ a new drop breakaway criterion which allows a more continuous transition between plume and ambient environments for the drop. The drift model performs well in terms of comparisons made of predictions to 1977 Chalk Point Dye Study data. Those data include measurements of sodium deposition flux, average diameter, number drop deposition flux, and liquid deposition flux at downwind distances of 0.5 and 1.0 km. The model is untested for distances greater than 1.0 km due to the lack of good-quality field data at those distances. The model was developed as an improvement over existing theories which are evaluated theoretically and tested with Chalk Point data in this report. Sensitivity studies are presented which provide considerable insight as to the differences among existing formulations for droplet evaporation and droplet breakaway methods.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Illinois Univ., Urbana (USA). Dept. of Mechanical and Industrial Engineering; Argonne National Lab., IL (USA)
OSTI Identifier:
6656582
Report Number(s):
EPRI-CS-1683(Vol.3)
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 54 ENVIRONMENTAL SCIENCES; AEROSOLS; DEPOSITION; ENVIRONMENTAL TRANSPORT; NATURAL DRAFT COOLING TOWERS; PLUMES; MATHEMATICAL MODELS; COMPARATIVE EVALUATIONS; DROPLETS; EVAPORATION; SALTS; VALIDATION; COLLOIDS; COOLING TOWERS; DISPERSIONS; MASS TRANSFER; PARTICLES; PHASE TRANSFORMATIONS; SOLS; TESTING; 200201* - Fossil-Fueled Power Plants- Waste Management- Thermal Effluents; 500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Dunn, W. E., Gavin, P., Boughton, B., Policastro, A. J., and Ziebarth, J. Studies on mathematical models for characterizing plume and drift behavior from cooling towers. Volume 3. Mathematical model for single-source (single-tower) cooling tower drift dispersion. United States: N. p., 1981. Web. doi:10.2172/6656582.
Dunn, W. E., Gavin, P., Boughton, B., Policastro, A. J., & Ziebarth, J. Studies on mathematical models for characterizing plume and drift behavior from cooling towers. Volume 3. Mathematical model for single-source (single-tower) cooling tower drift dispersion. United States. https://doi.org/10.2172/6656582
Dunn, W. E., Gavin, P., Boughton, B., Policastro, A. J., and Ziebarth, J. 1981. "Studies on mathematical models for characterizing plume and drift behavior from cooling towers. Volume 3. Mathematical model for single-source (single-tower) cooling tower drift dispersion". United States. https://doi.org/10.2172/6656582. https://www.osti.gov/servlets/purl/6656582.
@article{osti_6656582,
title = {Studies on mathematical models for characterizing plume and drift behavior from cooling towers. Volume 3. Mathematical model for single-source (single-tower) cooling tower drift dispersion},
author = {Dunn, W. E. and Gavin, P. and Boughton, B. and Policastro, A. J. and Ziebarth, J.},
abstractNote = {This report presents a new salt-drift deposition model for single natural-draft cooling towers which has the advantages of improved theory and good performance with field data. Advantages to the model include: a submodel for cooling-tower plume rise which has been calibrated and validated with laboratory and field data; improved treatment of droplet evaporation which accounts for salt-concentration gradients within the drop; and an option to employ a new drop breakaway criterion which allows a more continuous transition between plume and ambient environments for the drop. The drift model performs well in terms of comparisons made of predictions to 1977 Chalk Point Dye Study data. Those data include measurements of sodium deposition flux, average diameter, number drop deposition flux, and liquid deposition flux at downwind distances of 0.5 and 1.0 km. The model is untested for distances greater than 1.0 km due to the lack of good-quality field data at those distances. The model was developed as an improvement over existing theories which are evaluated theoretically and tested with Chalk Point data in this report. Sensitivity studies are presented which provide considerable insight as to the differences among existing formulations for droplet evaporation and droplet breakaway methods.},
doi = {10.2172/6656582},
url = {https://www.osti.gov/biblio/6656582}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}