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FEASIBILITY OF A DIRECT COUPLED TURBINE-COMPRESSOR POWER BLOCK FOR S-CO2 BRAYTON CYCLES

Dhar, Eshan and Srivatsa, Shreyas and Kumar, Pramod (2016) FEASIBILITY OF A DIRECT COUPLED TURBINE-COMPRESSOR POWER BLOCK FOR S-CO2 BRAYTON CYCLES. In: ASME Turbo Expo: Turbine Technical Conference and Exposition, JUN 13-17, 2016, Seoul, SOUTH KOREA, pp. 393-402.

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Official URL: http://dx.doi.org/10.1115/GT2016-56847

Abstract

This paper explores the feasibility of a direct coupled turbo-compressor power block for a simple recuperated S-CO2 Brayton cycle. The turbine inlet temperature is fixed at 600 degrees C and the maximum working pressure is restricted to 300 bar due to material constraints to enable use of conventional steel alloys. Analysis is performed for a single stage radial flow turbine and a centrifugal compressor configuration. Mean-line flow is individually analyzed for the turbine and compressor to generate contour maps of optimum operating speeds for a range of power levels at various isentropic efficiencies. While performing the mean-line analysis real gas properties and friction coefficients of S-CO2 have been considered. The mean-line flow code is coupled with thermodynamic model of the simple recuperated S-CO2 Brayton cycle for generating a range of optimum operating conditions where direct coupled power blocks can be used.

Item Type: Conference Proceedings
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Additional Information: Copy right for this article belongs to the AMER SOC MECHANICAL ENGINEERS, THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
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Date Deposited: 03 Dec 2016 09:54
Last Modified: 03 Dec 2016 09:54
URI: http://eprints.iisc.ernet.in/id/eprint/55377

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