Energy and exergy analysis of microchannel central solar receivers for pressurised fluids

D'Souza, D.; Montes, María José Sánchez; Romero, Manuel; González-Aguilar, José

doi:10.1016/j.applthermaleng.2022.119638

Cited by 7 publications

(4 citation statements)

References 58 publications

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“…The solar receiver model describes the thermal behavior of the receiver when exposed to concentrated solar radiation [20]. This model has been implemented in Matlab [21], and the thermofluidodynamic properties of CO 2 are provided by the database NIST REF-PROP [22].…”

Section: The Solar Receivermentioning

confidence: 99%

“…to concentrated solar radiation [20]. This model has been implemented in Matlab [21], and the thermofluidodynamic properties of CO2 are provided by the database NIST REFPROP [22].…”

Section: The Solar Receivermentioning

confidence: 99%

“…The optimal CO 2 pressure at the inlet of the receiver is approximately 55 bar [25]. Assuming that the primary heat exchanger is balanced with a Terminal Temperature Difference (TTD) of 12 • C, and that the interconnection pipes are adiabatic, the temperature rise of the CO 2 in the solar receiver ranges from 494.8 • C to 700 • C. This solar receiver model has been validated [20] with data from a Thermal Resistance Model (TRM) and a Computational Fluid Dynamics (CFD) model and some limited experimentation [26].…”

Section: R Htfmentioning

confidence: 99%

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Thermoeconomic Analysis of Concentrated Solar Power Plants Based on Supercritical Power Cycles

et al. 2023

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Solar thermal power plants are an alternative for the future energy context, allowing for a progressive decarbonisation of electricity production. One way to improve the performance of such plants is the use of supercritical CO2 power cycles. This article focuses on a solar thermal plant with a central solar receiver coupled to a partial cooling cycle, and it conducts a comparative study from both a thermal and economic perspective with the aim of optimising the configuration of the receiver. The design of the solar receiver is based on a radial configuration, with absorber panels converging on the tower axis; the absorber panels are compact structures through which a pressurised gas circulates. The different configurations analysed keep a constant thermal power provided by the receiver while varying the number of panels and their dimensions. The results demonstrate the existence of an optimal configuration that maximises the exergy efficiency of the solar subsystem, taking into account both the receiver exergy efficiency and the heliostat field optical efficiency. The evolution of electricity generation cost follows a similar trend to that of the exergy efficiency, exhibiting minimum values when this efficiency is at its maximum.

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Section: The Solar Receivermentioning

confidence: 99%

“…to concentrated solar radiation [20]. This model has been implemented in Matlab [21], and the thermofluidodynamic properties of CO2 are provided by the database NIST REFPROP [22].…”

Section: The Solar Receivermentioning

confidence: 99%

Section: R Htfmentioning

confidence: 99%

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Thermoeconomic Analysis of Concentrated Solar Power Plants Based on Supercritical Power Cycles

et al. 2023

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“…Over the past few years, a large number of studies have been devoted to developing various technologies to provide a viable and feasible solution for harnessing the potential of thermal radiation. One of these technologies was seen in the development of a central receiver system that primarily deploys a substantial number of heliostat field solar collectors integrated with solar receivers and placed at the zenith of a solar tower (Collado & Guallar, 2019;Ahmad et al, 2022;D'Souza et al, 2023). This integrated system employs a working fluid primarily in molten salt or Duratherm oil, thereby deploying first-of-their kind grid-connected commercial solar power plants (Zolfagharnasab et al, 2020;Caraballo et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

First and second law assessment of a solar tower power plant for electrical power production and error analysis

Parvez

2023

Seatific

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The primary objective of this study is to investigate the solar-powered combined-cycles system for converting the available solar energy to its truest potential and for generating electrical power. This combined-cycles system consists of a solar power tower, steam turbine cycle, and organic Rankine cycle. The study focuses on recovering the waste heat that is obtained from the exit of a steam turbine and using it to operate the Rankine cycle with refrigerants R-113, R-11, and R-1233zd. The analysis also predicts the effects of solar irradiance for a mass flow rate of molten salt and steam, turbine inlet pressure, and turbine inlet temperature on first and second law efficiencies in the combined-cycles system. The novel concept of uncertainty analysis is also introduced in this work in order to provide precise accurate results and remove all errors, which are found to be in the desired range of 3.81%. The results also show that as the direct normal irradiation (DNI) increases from 600 W/m 2 to 1000 W/m 2 , first law efficiency is obtained in the range of 32.31% to 37.99% and second law efficiency from 24.14% to 25.51% after employing the organic Rankine cycle (ORC) system. Further, the results indicate the maximum exergy destruction that occurs in the central receiver to be around 42%, in the heliostat to be 31%, in the steam generator to be 10%, and in the heat exchanger to be 3.6%.

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Proposal of a microchannel receiver for Fresnel technology to supply solar heat for industrial processes

Montes,

Stojceska,

Reay

et al. 2023

Case Studies in Thermal Engineering

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Energy and exergy analysis of microchannel central solar receivers for pressurised fluids

Cited by 7 publications

References 58 publications

Thermoeconomic Analysis of Concentrated Solar Power Plants Based on Supercritical Power Cycles

Thermoeconomic Analysis of Concentrated Solar Power Plants Based on Supercritical Power Cycles

First and second law assessment of a solar tower power plant for electrical power production and error analysis

Proposal of a microchannel receiver for Fresnel technology to supply solar heat for industrial processes

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