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ESTIMATING THE COST OF COAL-FIRED GENERATION AN APPLICATION OF VISTATM
April Anderson Fuels Consulting Project Manager Ken Nowling Project Manager Black & Veatch 11401 Lamar Avenue Overland Park, KS 66207 anderson-higgsaa@bv.com Coal characteristics affect nearly every operational facet of a power plant, including forced outage rate, maintenance costs, auxiliary power requirements, net plant heat rate, emissions, and the ability to meet full load. Therefore, it is difficult to predict the relative economics associated with significant changes in coal quality due to coal cleaning or coal blending. Recognizing the need to predict the total fuel-related cost of coal-fired generation, EPRI commissioned the development of the Coal Quality Impact Model (CQIMTM) a computer program to predict these performance and cost impacts of burning alternate coals at existing power generating facilities. First released in 1989, CQIM represented nearly a decade of effort by Black & Veatch (B&V) and EPRI. CQIM quickly became the industry standard for fuel-related performance and economic analyses. It has been obtained by over 100 EPRI member utilities and has been purchased by non-EPRI U.S. utilities, international utilities, and coal producers. The current version, VistaTM, was released as a commercial product in 2000. Vista represents continual technical improvements over CQIM which expand its applicability to power plants around the world. This paper will describe Vista and provide an example of Vista’s applicability to the coals and power plants in India. 1.0 UNDERSTANDING VISTA Vista quantifies the cost and performance impacts associated with burning alternate coals, coal blends, and coalgas cofires in a power plant. Vista incorporates detailed predictive performance models for all equipment affected by coal quality, including a comprehensive steam generator heat transfer model.

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