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Evaluation of the performance of hybrid CSP/Biomass Power Plants

Soares, Joao and Oliveira, Armando and Dieckmann, Simon and Krüger, Dirk and Orioli, Francesco (2017) Evaluation of the performance of hybrid CSP/Biomass Power Plants. 16th International Conference on Sustainable Energy Technologies, 17.-20. Juli 2017, Bologna, Italien.

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The fundamental benefit of using renewable energy systems is undeniable since they rely on a source that will not run out. Nevertheless, they strongly depend on meteorological conditions (solar, wind, etc.), leading to uncertainty on the instantaneous energy supply and consequently to grid connection issues. An interesting alternative concept is renewable hybridisation. It consists in the strategic combination of different renewable sources in the power generation portfolio by taking advantage of each technology. Hybridisation of concentrating solar energy with biomass denotes a powerful way of assuring system stability and reliability. The main advantage is dispatchability through the extension of the operating range. In this article, two 1 MWel hybrid power plants are presented and assessed. In case 1 the purpose is only power generation and in case 2 the use of Combined Heat and Power. Both systems were designed as a scale up and enhancement of a prototype, installed in Tunis under the REELCOOP project. Technical and economic performance were evaluated trough numerical simulation and levelised cost of electricity calculation. Simulations were carried out under the assumption of 16 hours of continuous load demand per day (6 to 22 h). Case 1, with a power block higher efficiency, leads to an annual average system efficiency of about 13.7%. The use of heat in case 2, increases system efficiency to 33.8%. Capital expenditure varies from 9.5 M€ (case 1) to 11.3 M€ (case 2). Despite the lower electrical conversion efficiency of case 2, and its higher capital expense, the levelised cost of electricity is lower (126 €/MWhel) than in case 1(173.1 €/MWhel). Both results are attractive considering the small scale of the power plant. This outcome is a consequence of hybrid operation, enhancing power block and system efficiency, and also reducing cost by equipment sharing (i.e. power block).

Item URL in elib:https://elib.dlr.de/114715/
Document Type:Conference or Workshop Item (Speech)
Title:Evaluation of the performance of hybrid CSP/Biomass Power Plants
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Soares, Joaouniversity of portoUNSPECIFIED
Oliveira, Armandouniversity of portoUNSPECIFIED
Dieckmann, Simonsimon.dieckmann (at) dlr.dehttps://orcid.org/0000-0002-9504-8626
Krüger, Dirkdirk.krueger (at) dlr.deUNSPECIFIED
Orioli, FrancescosoltiguaUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:CSP, Biomasse, Hybrid, Kraft-Wärme-Kopplung
Event Title:16th International Conference on Sustainable Energy Technologies
Event Location:Bologna, Italien
Event Type:international Conference
Event Dates:17.-20. Juli 2017
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Advanced Heat Transfer Media
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Line Focus Systems
Deposited By: Dieckmann, Simon
Deposited On:03 Nov 2017 11:23
Last Modified:31 Jul 2019 20:12

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