A Combined Cycle Designed to Achieve Greater Than 60 Percent Efficiency

Author:

Briesch M. S.1,Bannister R. L.1,Diakunchak I. S.1,Huber D. J.1

Affiliation:

1. Westinghouse Electric Corporation, Orlando, FL 32826

Abstract

In cooperation with the U.S. Department of Energy’s Morgantown Energy Technology Center, Westinghouse is working on Phase 2 of an 8-year Advanced Turbine Systems Program to develop the technologies required to provide a significant increase in natural gas-fired combined cycle power generation plant efficiency. In this paper, the technologies required to yield an energy conversion efficiency greater than the Advanced Turbine Systems Program target value of 60 percent are discussed. The goal of 60 percent efficiency is achievable through an improvement in operating process parameters for both the combustion turbine and steam turbine, raising the rotor inlet temperature to 2600°F (1427°C ), incorporation of advanced cooling techniques in the combustion turbine expander, and utilization of other cycle enhancements obtainable through greater integration between the combustion turbine and steam turbine.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Reference7 articles.

1. Baldwin, C. J., Boho, M. J., Beeley, E. W., and Stephens, J. O., 1965, “Future Role of Gas Turbines in Power Generation,” Proceedings American Power Conference, Vol. 27, pp. 484–500.

2. Bannister R. L. , CheruvuN. S., LittleD. A., and McQuigganG., 1995, “Development Requirements for an Advanced Gas Turbine System,” ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER, Vol. 117, this issue, pp. 723–732.

3. Ernette, D. J., and Silvestri, G. J., 1990, “Optimized Steam Cycle Configurations for Subcritical Applications,” ASME Paper No. 90-JPGC/Pwr-5.

4. Little, D. A., Bannister, R. L., and Wiant, B. C., 1993, “Development of Advanced Turbine Systems,” ASME Cogen Turbo Power ’93 Proceedings, IGTI-Vol. 8, pp. 271–280.

5. Scalzo, A. J., Bannister, R. L., DeCorso, M., and Howard, G. S., 1994, “Evolution of Heavy-Duty Power Generation and Industrial Combustion Turbines in the United States,” ASME Paper 94-GT-488; ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER, in press.

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