skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Computer optimization of dry and wet/dry cooling tower systems for large fossil and nuclear power plants

Abstract

This study determined the cost of dry cooling compared to the conventional cooling methods. Also, the savings by using wet/dry instead of all-dry cooling were determined. A total optimization was performed for power plants with dry cooling tower systems using metal-finned-tube heat exchangers and surface condensers. The optimization minimizes the power production cost. The program optimizes the design of the heat exchanger and its air and water flow rates. In the base case study, the method of replacing lost capacity assumes the use of gas turbines. As a result of using dry cooling towers in an 800 MWe fossil plant, the incremental costs with the use of high back pressure turbine and conventional turbine over all-wet cooling are 11 and 15%, respectively. For a 1200 MWe nuclear plant, these are 22 and 25%, respectively. Since the method of making up lost capacity depends on the situation of a utility, considerable effort has been placed on testing the effects of using different methods of replacing lost capacity at high ambient temperatures by purchased energy. The results indicate that the optimization is very sensitive to the method of making up lost capacity. It is, therefore, important to do an accurate representation ofmore » all possible methods of making up capacity loss when optimizating power plants with dry cooling towers. A solution for the problem of losing generation capability by a power plant due to the use of a dry cooling tower is to supplement the dry tower during the hours of peak ambient temperatures by a wet tower. A separate wet/dry cooling tower system with series tower arrangement was considered in this study, and proved to be an economic choice over all-dry cooling where some water is available but supplies are insufficient for a totally evaporative cooling tower.« less

Authors:
;
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Cambridge (USA)
OSTI Identifier:
6171615
Report Number(s):
MIT-EL-79-034
ON: DE81029729; TRN: 81-015946
DOE Contract Number:  
AS02-76EV04114
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 22 GENERAL STUDIES OF NUCLEAR REACTORS; COOLING TOWERS; ECONOMIC ANALYSIS; OPTIMIZATION; PERFORMANCE; FOSSIL-FUEL POWER PLANTS; NUCLEAR POWER PLANTS; COMPUTERIZED SIMULATION; DESIGN; OPERATION; THERMAL EFFLUENTS; WASTE HEAT; WATER REQUIREMENTS; ECONOMICS; ENERGY; HEAT; MECHANICAL STRUCTURES; NUCLEAR FACILITIES; POWER PLANTS; SIMULATION; THERMAL POWER PLANTS; TOWERS; WASTES; 200101* - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems; 220200 - Nuclear Reactor Technology- Components & Accessories

Citation Formats

Choi, M., and Glicksman, L.R. Computer optimization of dry and wet/dry cooling tower systems for large fossil and nuclear power plants. United States: N. p., 1979. Web.
Choi, M., & Glicksman, L.R. Computer optimization of dry and wet/dry cooling tower systems for large fossil and nuclear power plants. United States.
Choi, M., and Glicksman, L.R. Thu . "Computer optimization of dry and wet/dry cooling tower systems for large fossil and nuclear power plants". United States.
@article{osti_6171615,
title = {Computer optimization of dry and wet/dry cooling tower systems for large fossil and nuclear power plants},
author = {Choi, M. and Glicksman, L.R.},
abstractNote = {This study determined the cost of dry cooling compared to the conventional cooling methods. Also, the savings by using wet/dry instead of all-dry cooling were determined. A total optimization was performed for power plants with dry cooling tower systems using metal-finned-tube heat exchangers and surface condensers. The optimization minimizes the power production cost. The program optimizes the design of the heat exchanger and its air and water flow rates. In the base case study, the method of replacing lost capacity assumes the use of gas turbines. As a result of using dry cooling towers in an 800 MWe fossil plant, the incremental costs with the use of high back pressure turbine and conventional turbine over all-wet cooling are 11 and 15%, respectively. For a 1200 MWe nuclear plant, these are 22 and 25%, respectively. Since the method of making up lost capacity depends on the situation of a utility, considerable effort has been placed on testing the effects of using different methods of replacing lost capacity at high ambient temperatures by purchased energy. The results indicate that the optimization is very sensitive to the method of making up lost capacity. It is, therefore, important to do an accurate representation of all possible methods of making up capacity loss when optimizating power plants with dry cooling towers. A solution for the problem of losing generation capability by a power plant due to the use of a dry cooling tower is to supplement the dry tower during the hours of peak ambient temperatures by a wet tower. A separate wet/dry cooling tower system with series tower arrangement was considered in this study, and proved to be an economic choice over all-dry cooling where some water is available but supplies are insufficient for a totally evaporative cooling tower.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share: