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Solar gas turbine systems with centrifugal particle receivers, for remote power generation

Prosin, Tobias and Pryor, Trevor and Creagh, Christine and Amsbeck, Lars and Uhlig, Ralf (2015) Solar gas turbine systems with centrifugal particle receivers, for remote power generation. Energy Procedia, 69, pp. 1382-1392. Elsevier. DOI: 10.1016/j.egypro.2015.03.131 ISSN 1876-6102

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Abstract

There is a growing demand from remote communities in Australia to increase the amount of decentralised renewable energy in their energy supply mix in order to decrease their fuel costs. In contrast to large scale concentrated solar power (CSP) plants, small solar-hybrid gas turbine systems promise a way to decentralise electricity generation at power levels in the range of 0.1- 10 MWe, and reduce to cost of energy production for off-grid, isolated communities. Thermal storage provides such CSP Systems with an advantage over photovoltaic (PV) technology as this would be potentially cheaper than adding batteries to PV systems or providing stand-by back-up systems such as diesel fuelled generators. Hybrid operation with conventional fuels and solar thermal collection and storage ensures the availability of power even if short term solar radiation is not sufficient or the thermal storage is empty. This paper presents initial modelling results of a centrifugal receiver (CentRec) system, using hourly weather data of regional Australia for a 100 kWe microturbine as well as a more efficient and cost effective 4.6 MWe unit. The simulations involve calculation and optimisation of the heliostat field, by calculating heliostat by heliostat annual performance. This is combined with a model of the receiver efficiency based on experimental figures and a model of the particle storage system and turbine performance data. The optimized design for 15 hours of thermal storage capacity results in a tower height of 35 m and a solar field size of 2100 m² for the 100 kWe turbine, and a tower height of 115 m and solar field size of 50 000 m² for the 4.6 MWe turbine. The solar field provides a greater portion of the operational energy requirement for the 100 kWe turbine, as the TIT of the 4.6 MWe turbine (1150°C) is greater than what the solar system can provide. System evaluations of the two particle receiver systems, with a selection of cost assumptions, are then compared to the current conventional means of supplying energy in such remote locations.

Item URL in elib:https://elib.dlr.de/102513/
Document Type:Article
Title:Solar gas turbine systems with centrifugal particle receivers, for remote power generation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Prosin, TobiasMurdoch University, Perth, WA, 6150, AustraliaUNSPECIFIED
Pryor, TrevorMurdoch University, Perth, WA, 6150, AustraliaUNSPECIFIED
Creagh, ChristineMurdoch University, Perth, WA, 6150, AustraliaUNSPECIFIED
Amsbeck, Larslars.amsbeck (at) dlr.deUNSPECIFIED
Uhlig, Ralfralf.uhlig (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:Energy Procedia
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:69
DOI :10.1016/j.egypro.2015.03.131
Page Range:pp. 1382-1392
Publisher:Elsevier
Series Name:Elsevier Ltd.
ISSN:1876-6102
Status:Published
Keywords:CSP; microturbine; particle receiver; centrifugal; heliostat field; solar hybrid
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Advanced Heat Transfer Media (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Uhlig, Tamara
Deposited On:16 Feb 2016 15:07
Last Modified:06 Sep 2019 15:22

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