Solugas – Operation Experience of the First Solar Hybrid Gas Turbine System at MW Scale

Quero, M.; Korzynietz, Roman; Ebert, Miriam; Jiménez, A.; Río, A. del; Brioso, J.

doi:10.1016/j.egypro.2014.03.193

Cited by 84 publications

(47 citation statements)

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“…The function of the receiver is the transfer of energy contained in the highly concentrated radiation to the heat transfer medium (pressurized air). Heat capacity T out fluid Fluid temperature at outlet T in fluid Fluid temperature at outlet Difference pressure p 1 Pressure at inlet p 2 Pressure at outlet Friction coefficient (pressure drop) l Tube length d Tube (inner) diameter A 1 Cross section area diffusor A 2 Cross section area diffusor f Darcy friction factor y + Dimensional wall distance Receiver Receiver efficiency P fluid Heat transferred to fluid P receiver Total power into receiver…”

Section: Solar Hybrid Systemsmentioning

confidence: 99%

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Advancing Tube Receiver Performance by Using Corrugated Tubes

2015

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Direct introduction of solar energy into a Brayton cycle using Solar Tower systems enables a highly efficient conversion of the solar energy, especially so when combined cycles are used. One key component of such a solar gas turbine system is the receiver. High and inhomogeneous heat fluxes pose the main challenge for the design of such receivers. One possible design of the receiver uses directly irradiated metallic tubes arranged in an insulated cavity. The paper presents the results of a study comparing thermo hydraulic absorber tube layouts with varying absorber tube dimensions and number of parallel tubes. The more parallel tubes are used the lower is the velocity of the fluid flow and in the same way the heat transfer coefficient is reduced. This leads to higher wall temperatures and therefore to a lower receiver efficiency. Using corrugated tubes instead of smooth tubes gives the possibility to increase the heat transfer coefficient. A thermo hydraulic test bench was developed in order to analyze the influence of different structures of corrugated tubes on heat transfer capability and pressure drop. The geometry of helically ribbed tubes was optimized using CFD modelling. Design goal was a high heat transfer coefficient without exceeding the allowed pressure drop of the turbine. The resulting configurations were used to improve a tubular receiver based on the SOLUGAS receiver design. A thermal FEM model was used to analyze the temperature field and the efficiency of the different receiver designs. Solar radiation, convection to fluid, radiation exchange, convective and conductive losses were considered in the model. It was found that the receiver efficiency of about 0.719 (at design point) could be increased up to 0.835 by using more parallel absorber tubes than needed to fulfill the pressure drop limit.

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Section: Solar Hybrid Systemsmentioning

confidence: 99%

“…Within the SOLUGAS project a tubular receiver heating air from 330 °C up to 800 °C with a thermal power of 3.12 MW and a pressure drop of 250 mBar was developed and successfully tested [2,3]. The receiver is a prototype (with reduced mass flow) for a commercial system using the MERCURY50 3.9 MW el turbine.…”

Section: Receivermentioning

confidence: 99%

Advancing Tube Receiver Performance by Using Corrugated Tubes

2015

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“…Since Solugas prototype commissioning, Abengoa Solar gained operation know-how, experiencing directly the solar Brayton technologies advantages and challenges, as well as the complexity of starting-up and operating a large research plant. The special attractiveness of the Solugas project, apart from the development of the key components solar receiver and modified gas turbine, lies in the complexity of a successful integration of these together with all further components into a new solar tower power plant [3].…”

Section: Introductionmentioning

confidence: 99%

Soltrec – Pressurized Volumetric Solar Air Receiver Technology

et al. 2015

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During the EU FP7-Solugas project the feasibility of the solar hybrid technology with a pressurized air receiver and a gas turbine was demonstrated. Over the last years the coupling of solar heat to air-Brayton cycles has been identified as a way to accelerate the CSP market penetration competing directly with conventional combined cycle plants. The path to the commercialization of this hybrid CSP product goes through the scaling of the solarized gas turbine capacity and the increase of the receiver outlet temperature.The Soltrec project focuses on the development, manufacturing and testing of a volumetric receiver, capable to raise the maximum temperature of the compressed air up to 1000ºC. The concept of volumetric air receivers is the most promising option for getting high efficiencies at these temperature levels, with solar shares of up to 80% at design point operation. Transforming solar radiation into hot pressurized air at these temperatures levels leads to thermal and mechanical stresses that requires an innovate receiver design and the application of new heat resistant materials.With the objective of significantly increasing the solar share and lower the costs and environmental impact of the hybrid plants the pilot Soltrec air receiver has been commissioned at the Abengoa Solar R&D facilities at Sanlúcar la Mayor (Seville, Spain).

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“…[10], megawat boyutlarındaki ilk hibrit güneş enerjisi gaz türbinini geliştirmişlerdir. Sistemde, 2012 yılında maksimum alıcı dış sıcaklığına erişmişlerdir.…”

Section: Introductionunclassified

Thermodynamic analysis of solar assisted multi-functional trigeneration system

Kızılkan¹,

Akbaş²

2016

Pamukkale J Eng Sci

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Solugas – Operation Experience of the First Solar Hybrid Gas Turbine System at MW Scale

Cited by 84 publications

References 1 publication

Advancing Tube Receiver Performance by Using Corrugated Tubes

Advancing Tube Receiver Performance by Using Corrugated Tubes

Soltrec – Pressurized Volumetric Solar Air Receiver Technology

Thermodynamic analysis of solar assisted multi-functional trigeneration system

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