Evaluation of the Gaussian plume model at Maryland power plants. Final report Apr 1974--Mar 1977
Technical Report
·
OSTI ID:6648244
The Gaussian plume model was evaluated by comparing its predictions to measurements of dispersion and ground-level concentrations of sulfur dioxide downwind of the Chalk Point, Dickerson, and Morgantown power plants. A total of 688 individual crosswind SO2 profiles measured at distances ranging from 1.7 km to 33 km downwind of the plants were used in the evaluation. Different methods of estimating dispersion were found to produce significantly different results. Brookhaven dispersion parameters, selected on the basis of wind speed and temperature gradient information, gave best agreement with the measurements. The geometric mean of predicted-to-measured concentration was 1.17, and 71% of the calculated concentrations were within a factor of 2 of the measurements. Pasquill dispersion estimates chosen by the Turner (1964) method, but shifted to the next more unstable stability class, also gave good results. Other algorithms for choosing dispersion parameters including the use of delta theta, the Tennessee Valley Authority approach, and the unmodified Pasquill-Turner method (no shift in stability class) resulted in substantially more unreliable concentration predictions. For a given method of estimating dispersion, the model gave similar results at all three power plants. The problem of plume merging from two nearby stacks and enhanced plume rise was addressed.
- Research Organization:
- Martin Marietta Corp., Baltimore, MD (USA). Environmental Technology Center
- OSTI ID:
- 6648244
- Report Number(s):
- PB-277084
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
200203 -- Fossil-Fueled Power Plants-- Waste Management-- Site Selection & Land Use
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CENTRAL REGION
CHALCOGENIDES
COMPARATIVE EVALUATIONS
DIFFUSION
EARTH ATMOSPHERE
ENVIRONMENTAL TRANSPORT
FLUE GAS
GASEOUS WASTES
MARYLAND
MASS TRANSFER
MATHEMATICAL MODELS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PLUME
PLUMES
POLLUTION
POWER PLANTS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
USA
WASTES
200203 -- Fossil-Fueled Power Plants-- Waste Management-- Site Selection & Land Use
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CENTRAL REGION
CHALCOGENIDES
COMPARATIVE EVALUATIONS
DIFFUSION
EARTH ATMOSPHERE
ENVIRONMENTAL TRANSPORT
FLUE GAS
GASEOUS WASTES
MARYLAND
MASS TRANSFER
MATHEMATICAL MODELS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PLUME
PLUMES
POLLUTION
POWER PLANTS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
USA
WASTES