Cooling issues for small-scale sCO2 powerplants

Ingo Jahn, Duniam, Sam and Veeraragavan, Ananthanarayanan (2015). Cooling issues for small-scale sCO2 powerplants. In: Kamel Hooman, Hal Gurgenci, Zhiqiang Guan, Yuanshen Lu and Manuel Lucas, Proceedings of the 17th IAHR International Conference on Cooling Tower and Heat Exchanger. IAHR International Conference on Cooling Tower and Heat, Gold Coast, QLD, Australia, (253-261). 7-11 September 2015.

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Name Description MIMEType Size Downloads
Author Ingo Jahn
Duniam, Sam
Veeraragavan, Ananthanarayanan
Title of paper Cooling issues for small-scale sCO2 powerplants
Conference name IAHR International Conference on Cooling Tower and Heat
Conference location Gold Coast, QLD, Australia
Conference dates 7-11 September 2015
Proceedings title Proceedings of the 17th IAHR International Conference on Cooling Tower and Heat Exchanger
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2015
Sub-type Fully published paper
Open Access Status Not Open Access
ISBN 9780646943770
Editor Kamel Hooman
Hal Gurgenci
Zhiqiang Guan
Yuanshen Lu
Manuel Lucas
Start page 253
End page 261
Total pages 9
Collection year 2016
Formatted Abstract/Summary
The use of refrigerants and supercritical fluids, such as CO2, as the working fluid in thermodynamic cycle has the potential to revolutionize power generation. Compared to steam Rankine cycles and open loop Brayton cycles, the advantages are higher thermodynamic efficiencies and more compact components. This is of particular interest for small-scale renewable energy systems, such as condensed solar power. However, the highly non-linear properties of the supercritical carbon dioxide, which allow efficient compression near the critical point (31°C) also create new challenges for the heat exchangers and cooling towers. Depending on the cycle design the cooling tower must be capable of cooling and condensing the fluid from the supercritical region to the liquid region. This is a particular challenge asrecuperation and CO2 properties significantly reduces  the air temperature increase in Cooler. 

This paper quantifies the cooling requirements and associated cooling issues created by a small-scale (1MW) solar thermal supercritical Carbon Dioxide power plant operating with a Natural Draft Dry Cooling Tower.
Keyword Cooling towers
Supercritical carbon dioxide
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

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Created: Wed, 16 Mar 2016, 13:24:01 EST by Anthony Yeates on behalf of School of Mechanical and Mining Engineering