Gas Turbine “Solarization”-Modifications for Solar/Fuel Hybrid Operation

Fisher, U.; Sugarmen, Chemi; Ring, Arik; Sinai, Joseph

doi:10.1115/1.1763602

Cited by 39 publications

(9 citation statements)

References 8 publications

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“…Among the energy-efficient technologies, Concentrated Solar Power (CSP) system is considered as one of the most attractive ways to solve the energy crisis in the future [1,2]. Many developed countries like the United State and the European Commission have been devoted to the solarized Brayton micro-turbines system over the past decades [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver

Zhu

Wang

et al. 2016

Applied Thermal Engineering

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h i g h l i g h t sPerformance of a pressurized volumetric solar receiver is experimentally discussed. Energy and exergy analysis is performed during a two-hour period in the morning. The efficiency of the solar receiver is maintained at around 60% under steady state. The highest exergy efficiency and energy efficiency is approximately 36% and 87%. a b s t r a c tThis article presents an experimental investigation of the heat transfer characteristics as well as energy and exergy performance for a pressurized volumetric solar receiver under variable mass flow rate conditions. During a two-hour period of continuous operation in the morning, the solar irradiance is relatively stable and maintained at approximately 600 W/m 2 , which is beneficial for analyzing the energy and exergy performance of the solar receiver. Experimental results show that the mass flow rate fluctuation has insignificant effect on the solar receiver outlet temperature, whereas the mass flow rate plays an important role in the solar receiver power, energy efficiency and exergy efficiency. The efficiency of the solar receiver is normally above 55% with the highest efficiency of 87%, and under steady state operating conditions the efficiency is maintained at approximately 60%. A very low value of the heat loss factor (0.014 kW/K) could be achieved during the current steady state operating conditions. The highest exergy efficiency is approximately 36%. In addition, as the temperature difference increases, the impact of the exergy factor increases. The highest exergy factor is 0.41 during the entire test.

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Section: Introductionmentioning

confidence: 99%

Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver

Zhu

Wang

et al. 2016

Applied Thermal Engineering

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“…Tower-type CSP plants with a tower and a heliostat field for high concentration have recently gained ground, but the Rankine cycle continues to be used in their power generation unit [3]. The combined cycle is the most efficient traditional method of generating power through fossil fuels; implementing the Brayton cycle technology, which employs solar radiation, can result in a breakthrough improvement in the efficiency of CSP technology or reduce the consumption of fossil fuels [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of the performance of solar receivers for compressed air

Kim

Lee

et al. 2014

J Mech Sci Technol

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A challenging issue that arises in achieving a combined cycle with concentrated solar power technology is the development of a solar receiver for compressed air. A solar receiver transfers heat from concentrated solar radiation to compressed air so that the air temperature is sufficiently increased to drive an air turbine. Using a simple modular extension, we have developed three solar receivers for compressed air based on the concept of the tubular receiver. Conventional tubular receivers are generally applied in liquid fluids, such as water or molten salt. Cavities and extended surfaces were designed and incorporated into the developed tubular receivers to improve the heat transfer to air. The receivers were also subjected to performance evaluation tests, which were conducted in the solar furnace of the Korea Institute of Energy Research, with ambient air compressed at 5 bar and expressed in terms of outlet temperature and receiver efficiency. Test results indicated the thermal characteristics of the three solar receivers for their proper use and facilitated the comparison of their performances. The results also provided a guideline to construct and simulate a solar receiver system composed of a series of receiver modules. The problems identified in this study can help improve the solar receiver system.

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“…Different hybrid fossil+solar configurations are possible and have been the object of several studies in recent years, dealing with technological integration issues as well as with the metrics necessary to evaluate the hybrid plant from both the thermodynamic and economic point of view [3]. Three main schemes are currently considered for the hybridization: the solarized gas turbines [4,5] the hybrid combined cycles [6,7] and the solar reforming systems [8]. For the purposes of testing and comparing allocation methods in the present paper, we adopt as our case study the technology of Solar-Integrated Combined-Cycle System (SICCS) with parabolic trough solar field.…”

Section: Introductionmentioning

confidence: 99%

What Fraction of the Electrical Energy Produced in a Hybrid Solar-Fossil Power Plant Should Qualify as ‘Renewable Electricity’?

2013

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Hybrid power production facilities, based on the integration of renewable resources into conventional fossil-fuel-fired power plants have gained a growing interest during the past decades due to a world-wide continuous increase of shares of the renewable sources into the electricity generation market. In fact, in spite of the variable nature of most of the renewable sources, the hybrid configuration may provide a more economic, sustainable, and reliable use of the renewables in all load-demand conditions compared to renewable single-resource facilities. Nonetheless, the question of what fraction of the electricity produced in such facilities is to be considered as generated from renewables, still remains not fully addressed. This implies that there is space for some arbitrariness in the quantification of the share of the produced electricity to be qualified for the subsidies granted to renewable electricity, as normally prescribed by most of the policies that promote the applications of renewable primary energy resources. To overcome this problem, in this work we first define the classical Single-Resource Separate-Production Reference allocation method (SRSPR) usually considered by the regulators which is based on reference partial primary energy factors that must be chosen by some authority as representative of the performance of the (best available or representative average single-resource) power production technologies that use the same renewable resource and the same fossil fuel as the hybrid facility. Then we propose a Self-Tuned Average-Local-Productions Reference allocation method (STLAPR) whereby the electricity allocation fractions are based on the energy scenario of the local area of interest that includes the hybrid plant itself. We compare the two methods for a case study consisting on the renewable-to-fossil allocation of the power produced in an Solar-Integrated Combined-Cycle System (SICCS) with parabolic trough solar field. It turns out that the differences between the classical SRSPR and the STLAPR method become significant as the hybrid facilities take on a sizable fraction of the production of electricity in the local area.

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Gas Turbine “Solarization”-Modifications for Solar/Fuel Hybrid Operation

Cited by 39 publications

References 8 publications

Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver

Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver

Experimental evaluation of the performance of solar receivers for compressed air

What Fraction of the Electrical Energy Produced in a Hybrid Solar-Fossil Power Plant Should Qualify as ‘Renewable Electricity’?

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