Thermoeconomic analysis of multi-stage recuperative Brayton power cycles: Part I- hybridization with a solar power tower system

Mohammadi, Kasra; McGowan, J.G.; Saghafifar, Mohammad

doi:10.1016/j.enconman.2019.02.012

Cited by 41 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Capital, decommissioning, and OML costs have been computed following Spelling's work [40]. However, regarding equipment costs, some differences with respect to Spelling work are considered for a more reasonable implementation in our thermodynamic model: the solar receiver cost computation [46] and the addition of the recuperator cost [47]. All equipment purchasing costs have been updated according to Marshall and Swift indexes for taking into account inflation [48].…”

Section: Tablementioning

confidence: 99%

“…Particularly, it was found that most spread out costs among different studies correspond to prices of receiver and recuperator. Three different scenarios are analyzed in this work: optimistic (both with the cheapest costs [47,49]), pessimistic (both with the most expensive costs [46,50]) and intermediate scenario (most expensive receiver [46] and cheapest recuperator [47]). For the sake of conciseness, costs results from our calculations with the data taken in the mentioned references and applied for the case of the SOL-UGAS base case are broken down in Table 3 for the intermediate scenario.…”

Section: Tablementioning

confidence: 99%

“…4. Mohammadi et al [47] have recently developed a thermo-economic analysis of several multi-stage configurations for a recuperative Brayton power cycle hybridized with a solar tower. The project SOLGATE [59], located at Almería, south of Spain, with a power output about 30 MWe was taken as reference.…”

Section: Numerical Estimations Of Lcoementioning

confidence: 99%

See 2 more Smart Citations

Thermo-economic and sensitivity analysis of a central tower hybrid Brayton solar power plant

Merchán

Sánchez

García-Ferrero

et al. 2021

Applied Thermal Engineering

View full text Add to dashboard Cite

A hybrid central tower thermo-solar plant working with a gas turbine is simulated by means of an in-house developed model and software. The model considers the integration of all plant subsystems. The calculation of the heliostat solar field efficiency includes the main losses factors as blocking, shadowing, attenuation, interception, and cosine effect. The simulation considers a Brayton cycle for the power unit with irreversibilities in the compressor and turbine, and pressure drops in the heat absorption and extraction processes. A combustion chamber burning natural gas ensures an approximately constant power output. The model is flexible and precise. At the same time it is fast enough to perform sensitivity studies on the efficiency of any subsystem and the overall plant. Thus, it allows for performing a thermo-economic analysis of the plant checking the influence of the main plant design parameters. The focal objective is to analyze the importance on the levelized cost of electricity (LCoE) of the key plant design parameters. The direct influence of parameters from the heliostat field and receiver (as tower height, distance to the first row of heliostats, heliostats size, receiver size and heat losses, etc.) on final LCoE is surveyed. Similarly, parameters from the turbine as pressure ratio, turbine inlet temperature, influence of recuperation and others, are also analyzed. The dimensions of the plant are taken from SOLUGAS prototype near Seville, Spain, although another location with quite different solar conditions in Spain is also considered. LCoE values predicted are about 158 USD/MWh. The analysis concludes that among several parameters surveyed, two of them are key in LCoE predicted values: turbine inlet temperature and solar receiver aperture size.

show abstract

Section: Tablementioning

confidence: 99%

Section: Tablementioning

confidence: 99%

See 1 more Smart Citation

Thermo-economic and sensitivity analysis of a central tower hybrid Brayton solar power plant

Merchán

Sánchez

García-Ferrero

et al. 2021

Applied Thermal Engineering

View full text Add to dashboard Cite

show abstract

“…where AEG is the annual electricity production by power cycle considering an 0.98 efficiency for the generator and a capacity factor of 0.8. 50 The system payback period (PP) is defined with the following equation:…”

Section: Orcidmentioning

confidence: 99%

Thermoeconomic analysis and inter‐stage pressure ratio optimization of nuclear power supercritical CO ₂ multi‐stage recompression

Yang

et al. 2020

Int J Energy Res

View full text Add to dashboard Cite

Summary Implemented optimization and full life cycle economic analysis on the inter‐stage pressure ratio were rarely paid attention to in supercritical carbon dioxide multi‐stage recompression. In this article, a thermodynamic model of supercritical carbon dioxide recompression Brayton cycle was established based on gas‐cooled fast reactor and the sensitivity analysis was performed. With the aim of seeking the optimal pressure ratio for two‐stage, three‐stage, and four‐stage recompression configuration, the full life cycle economic indicators were predicted, respectively. Parameter sensitivity analysis indicated that the thermodynamically optimized result could not coincide with that of the economically optimized. The optimal PR distribution scheme may result in the improvement of the initial cycle system efficiency from 46.89% to 48.07%. Meanwhile the levelized cost of electricity decreased from 57.40$/MWh to 55.87$/MWh. The approaching equilibrium trend of thermoeconomic parameters confirmed the existence of the optimal number of recompression stages, which could also be derived from the prediction tendency based on full life cycle economic indicators. Furthermore, it was discovered that reducing the year of repayment and the loan proportion enhanced the net present value of nuclear power plant, but the former method gave rise to longer payback period and lower internal rate of return. The present work preserves the guiding significance for nuclear power plant investors and the utilization of the supercritical carbon dioxide Brayton system.

show abstract

“…In addition to that sCO 2 Brayton cycle uses smaller turbo machinery and may achieve high efficiency with straightforward cycle configurations due to the higher density of sCO 2 , and it could potentially achieve 50 % efficiency if the turbine inlet temperatures were to be raised to 700 °C. Authors of [17] studied a hybrid solar power tower system with a pressurized air receiver and various multistage recuperative Brayton cycles. The result showed an increase in thermal efficiency.…”

Section: Introductionmentioning

confidence: 99%

A review study on solar tower using different heat transfer fluid

Falahat

Gomaa

2022

TAPR

View full text Add to dashboard Cite

The object of research is distinguishing the different heat transfer fluids (HTF) in concentrating solar power (CSP). CSP technologies are gaining more attention these years due to the fact that the world is facing significant problems, especially concerning environmental issues and the increasing electricity demand. The world countries are currently committed to mitigating climate change and limiting greenhouse gas emissions to keep the global temperature rising below 2 °C. As a result, renewable energy sources are required for power generation. One of the most widely used technologies is the solar tower, where mirrors reflect solar radiation into a central receiver on top of a tower that contains a working fluid known as heat transfer fluid. The HTF is one of the most important components in solar power tower plants used to transfer and store thermal energy to generate electricity. This study focuses on the HTF used in solar power towers and how it can affect the efficiency of the plant. The HTF discussed in this study are air, water/steam, molten salts, liquid sodium, and supercritical CO2. Among the review of HTFs in the solar tower system, the result of the research shows that the Air can reach the highest temperature while liquid sodium achieves the highest overall plant efficiency.

show abstract

Thermoeconomic analysis of multi-stage recuperative Brayton power cycles: Part I- hybridization with a solar power tower system

Cited by 41 publications

References 44 publications

Thermo-economic and sensitivity analysis of a central tower hybrid Brayton solar power plant

Thermo-economic and sensitivity analysis of a central tower hybrid Brayton solar power plant

Thermoeconomic analysis and inter‐stage pressure ratio optimization of nuclear power supercritical CO ₂ multi‐stage recompression

A review study on solar tower using different heat transfer fluid

Contact Info

Product

Resources

About

Thermoeconomic analysis of multi-stage recuperative Brayton power cycles: Part I- hybridization with a solar power tower system

Cited by 41 publications

References 44 publications

Thermo-economic and sensitivity analysis of a central tower hybrid Brayton solar power plant

Thermo-economic and sensitivity analysis of a central tower hybrid Brayton solar power plant

Thermoeconomic analysis and inter‐stage pressure ratio optimization of nuclear power supercritical CO 2 multi‐stage recompression

A review study on solar tower using different heat transfer fluid

Contact Info

Product

Resources

About

Thermoeconomic analysis and inter‐stage pressure ratio optimization of nuclear power supercritical CO ₂ multi‐stage recompression