Thermoeconomic optimization of a combined-cycle solar tower power plant

Spelling, James; Favrat, Daniel; Martin, Andrew; Augsburger, Germain

doi:10.1016/j.energy.2011.03.073

Cited by 105 publications

(40 citation statements)

References 11 publications

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“…Fig. 1 boiler model with a turbine circle, which was built in the previous work [16].By combining all these sub-models, the performance of the hybrid system for two schemes of double-source boiler under DNI of one typical meteorological year is investigated. Since both the storage model and solar collector model are based on transient algorithm, they can be coupledtogether to make the steam turbine generating unit operating steadily, as described below.…”

Section: Description and Modeling On The Systemmentioning

confidence: 99%

“…Because of the land restrictions in the coal-fired plant, the heliostat field is betterarranged north of the power plant, with the maximumthermal capacitybelow 90MW [23].Except the solar heat transferred to MSHE, the redundant heat can be also stored in the module of thermal energy storage (TES).According to theprevious analysis [16], two schemes of integration can be realized in the coupling system,targeting the superheat section and the evaporation sectionas indicated as Scheme I and II in Fig. 1(a), respectively.…”

Section: Description and Modeling On The Systemmentioning

confidence: 99%

“…However, literature reviewshowed that there were little investigations about the complementation between the coal-fired power plant and SPT plant, despite of their high similarity in the operation structure and temperature range [16].…”

Section: Introductionmentioning

confidence: 99%

“…In our previous study concerning the performance of solar energy and coal dual heat source boiler [16], the possibility of introducing solar heat from SPT to a coal-fired boilerhas been verified. The performance of such a dual source boiler on the design point was discussed.However for any practical operation, various solar energy collector sub-systems, including the heliostat field, thermal receiver and molten salt heat exchanger (MSHE), as well as the variation of DNI, always resulting in off-design conditions.…”

Section: Introductionmentioning

confidence: 99%

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Off-design performance of concentrated solar heat and coal double-source boiler power generation with thermocline energy storage

Zhang

et al. 2017

Applied Energy

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ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. 6. Such a hybrid system is promising for future applications. AbstractIntegration of solar thermal energy into a coal-fired power station is a promising technology for many coal-dependent countries. This work revealed the off-design performance of such a dual heat source boiler power generation from a system-level modelling approach. As an example study, heat from a solar power tower (SPT)was integrated into a 660 MW supercritical coal-firing power unit, and two integration schemes were considered. A system level analytical model was established that

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Section: Description and Modeling On The Systemmentioning

confidence: 99%

Section: Description and Modeling On The Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Off-design performance of concentrated solar heat and coal double-source boiler power generation with thermocline energy storage

Zhang

et al. 2017

Applied Energy

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“…However, solving the optimization problem with various objective functions is also possible. See for instance [36] for a multi-objective thermoeconomic optimization approach with one single receiver.…”

Section: Conclusion and Further Workmentioning

confidence: 99%

Optimization of multiple receivers solar power tower systems

Carrizosa

Domínguez-Bravo

Fernández-Cara

et al. 2015

Energy

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In this article a new procedure to optimize the design of a Multiple Receivers Solar Power Tower system is presented. The proposed procedure allows to optimize the different receivers (height, aperture tilt angle, azimuth angle and aperture size) as well as the heliostat field layout, seeking to minimize the levelized cost of thermal energy.The optimization problem is high dimensional, with a black-box nonconvex objective function that is hard to compute.Our method is based on an alternating greedy-based heuristic method, already used by the authors to design a system with a single receiver, which simultaneously optimizes the receivers and the heliostat field. The proposed procedure allows one to determine the overall number of heliostats, their locations and the aiming region of each field.

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Maximum overall efficiency for a solar-driven gas turbine power plant

Orgaz

Medina

Hernández

2012

Int. J. Energy Res.

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SUMMARY A general model for an irreversible solar‐driven Brayton multi‐step heat engine is presented. The model incorporates an arbitrary number of turbines (Nt) and compressors (Nc) and the corresponding reheating and intercooling processes; thus, the solar‐driven Ericsson cycle is a particular case where Nt, Nc → ∞. For the solar collector, we assume linear heat losses, and for the Brayton multi‐step cycle, we consider irreversibilities arising from the non‐ideal behavior of turbines and compressors, pressure drops in the heat input and heat release, heat leakage through the plant to the surroundings, and non‐ideal couplings of the working fluid with the external heat reservoirs. We obtain the collector temperatures at which maximum overall efficiency ηmax is reached as a function of the thermal plant pressure ratio, and a detailed comparison for several plant configurations is given. This maximum efficiency is obtained in two cases: when only internal irreversibilities are considered and when both internal and external irreversibilities (which corresponds to the fully irreversible realistic situation) are simultaneously taken into account. Differences between both situations are stressed in detail. In the fully irreversible realistic case, it is possible to perform an additional optimization with respect to the pressure ratio, ηmax∗. In particular, this double optimization leads to a valuable increase in efficiency (between 34% and 65%) for a plant with two turbines and two compressors compared to the simple solar‐driven one‐turbine one‐compressor Brayton engine. Copyright © 2012 John Wiley & Sons, Ltd.

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Thermoeconomic optimization of a combined-cycle solar tower power plant

Cited by 105 publications

References 11 publications

Off-design performance of concentrated solar heat and coal double-source boiler power generation with thermocline energy storage

Off-design performance of concentrated solar heat and coal double-source boiler power generation with thermocline energy storage

Optimization of multiple receivers solar power tower systems

Maximum overall efficiency for a solar-driven gas turbine power plant

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