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Technoeconomic Analysis of Alternative Solarized s-CO2 Brayton Cycle Configurations

Ho, Clifford K and Carlson, Matthew and Garg, Pardeep and Kumar, Pramod (2016) Technoeconomic Analysis of Alternative Solarized s-CO2 Brayton Cycle Configurations. In: JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 138 (5).

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Official URL: http://dx.doi.org/10.1115/1.4033573

Abstract

This paper evaluates cost and performance tradeoffs of alternative supercritical carbon dioxide (s-CO2) closed-loop Brayton cycle configurations with a concentrated solar heat source. Alternative s-CO2 power cycle configurations include simple, recompression, cascaded, and partial cooling cycles. Results show that the simple closed-loop Brayton cycle yielded the lowest power-block component costs while allowing variable temperature differentials across the s-CO2 heating source, depending on the level of recuperation. Lower temperature differentials led to higher sensible storage costs, but cycle configurations with lower temperature differentials (higher recuperation) yielded higher cycle efficiencies and lower solar collector and receiver costs. The cycles with higher efficiencies (simple recuperated, recompression, and partial cooling) yielded the lowest overall solar and power-block component costs for a prescribed power output.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ASME, TWO PARK AVE, NEW YORK, NY 10016-5990 USA
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 28 Oct 2016 07:09
Last Modified: 28 Oct 2016 07:09
URI: http://eprints.iisc.ac.in/id/eprint/55138

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