Comparison of Alternate Cooling Technologies for California Power Plants Economic, Environmental and Other Tradeoffs

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Comparison of Alternate Cooling Technologies for California Power Plants Economic, Environmental and Other Tradeoffs ( comparison-alternate-cooling-technologies-california-power-p )

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Introduction The work was carried out in several tasks: 1. Define the state-of-the-art of alternative cooling system technologies for gas turbine combined-cycle plants by – conducting a literature search and preparing an annotated bibliography, and – describing selected existing units and their operating and maintenance experience. 2. Compare the costs, performance, and environmental effects of wet and dry cooling systems by – selecting four case study sites representative of the range of operating conditions in California; – conducting engineering analyses to determine the capital, operating, and maintenance costs and system performance for each of the alternative cooling systems optimized for conditions at each site; – providing bases of comparison, figures of merit, comparisons, and rankings for the alternative systems; and – quantifying the environmental effects and describing the advantages and disadvantages of each technology. 3. Identify and discuss current areas of research directed at improving the performance, reducing the installed and operating costs, and minimizing the environmental impacts of power plant cooling systems; and recommend areas worthy of expanded support for the benefit of California citizens. 4. Identify potential alternative technologies and discuss the advantages and disadvantages compared to current systems; review the development status or commercial status and deployment experience; and describe potential barriers to their utilization and opportunities for reducing or removing the barriers. Organization of Report The remaining sections of this report describe the methodology, results, and recommendations of the work conducted for the CEC and EPRI under the Tailored Collaboration project, “Wet, Dry, Hybrid Wet/Dry, and Alternative Cooling Technologies.” Section 2 provides background information on cooling system alternatives for gas turbine combined-cycle power plants. Section 3 defines the state of the art for wet, dry, and hybrid cooling tower technologies on the basis of a survey of the literature, identification of existing and planned installations of alternative cooling systems in the United States and abroad, and discussion of the operating experience of the owner/operators of four dry-cooled plants. Section 4 reviews the selection of four case study sites representative of the range of cooling system 1-10

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