Steady-State Modelling of a Parabolic-Trough Concentrating Solar Power Plant

Palenzuela, Patricia; Alarcón-Padilla, Diego-César; Zaragoza, Guillermo

doi:10.1007/978-3-319-20535-9_4

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The numerical analysis assumed uniform heat fluxes, temperatures and thermophysical properties around the boundary of the HCE. According to Figure 1, the conserving of energy was used for each surface of the HCE cross section to determine the equations of the energy balance analysis [ 17].…”

Section: Numerical Modelmentioning

confidence: 99%

Numerical Study on the Effect of Using CuO-Water Nanofluid as a Heat Transfer Fluid on the Performance of the Parabolic Trough Solar Collector

Fayadh

Khalil

Dawood

2023

CFDL

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This research displays a numerical study of the effect of CuO-water nanofluid, as heat transfer fluid in compare with the use of pure water, on the performance of a parabolic trough solar collector. The numerical model was implemented by applying the energy balances of the heat collection element (HCE) of a parabolic solar collector in one dimension. The efficiency and the heat losses were calculated, once with pure water and once more with CuO-water nanofluid as a heat transfer fluid (HTF) at different CuO nanoparticles concentrations. The flow rate, ambient temperature, solar radiation, and wind speed were constant. The copper oxide nanoparticle concentrations used in the model were 1%, 3% and 5% of the HTF volume. Numerical results indicate that the using of CuO nanoparticles in suspension with water result in enhancing the efficiency by about 0.444%, 1.26% and 2% in average, and the heat losses have been decreased to about 4.44%, 12.6% and 20% in average at CuO concentrations of 1%, 3% and 5% respectively. The results are also showed that the performance enhancement factor (PEF) of the solar collector was improved by about 13.26% at a concentration of 5%

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Section: Numerical Modelmentioning

confidence: 99%

Numerical Study on the Effect of Using CuO-Water Nanofluid as a Heat Transfer Fluid on the Performance of the Parabolic Trough Solar Collector

Fayadh

Khalil

Dawood

2023

CFDL

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“…The model to be developed takes as a reference the one described by other authors [20][21][22][23][24][25]. The present, uses the typical 1D modeling technique based on a steady-state energy balance over the receiver.…”

Section: Thermohydraulic Modeling For Dsg In Ptcmentioning

confidence: 99%

Alternative Methodology for Modeling Direct Steam Generation in Parabolic Collectors: A Study Case in Northeast Mexico

González-Mora

Durán-García

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The possible implementation of direct steam generation (DSG) in parabolic troughs in the Northweast region of Mexico is very limited, since there are no analyses of this type to try to define a first proposal for a solar plant. Recently, a methodology has been implemented to eliminate the convective coefficient h in order to model the DSG process in a simpler way. This methodology has been validated with experimental data from the DISS results from PSA. This methodology allows to evaluate the temperature evolution along the loop, the pressure drop and the flow pattern in a short time and with low computational resources. This allows generating the first evaluation of a solar field with parabolic troughs. Additionally, by applying a new practical efficiency limit for the conversion of solar radiation into work, the exergetic efficiency of the installation is evaluated. The results show that this first evaluation, seems to be adecuate acording to the results suggested in the open literature.

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“…𝜂 𝑜𝑝𝑡 . 𝐴 𝑝 (15) where θm is the incidence angle, ηopt stands for optical efficiency at normal incidence, which takes into account the reflector's reflectance, the glass envelope's transmittance, the absorber's absorption, as well as the effects of shade, dirt and geometry [27]. IAM is the incidence angle modifier, a function of the collector incidence angle and the optical quality and it is calculated as given [28]:…”

Section: Without Insulating Cavitymentioning

confidence: 99%

Experimental Investigation of a Small-Scale Parabolic Trough Concentrated Solar Power ‎Systems

EHTİWESH

2023

Gazi University Journal of Science

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Large-scale systems have a lower levelized cost of electricity than small-scale concentrated solar power systems. Thus, the purpose of the present study is to evaluate the potential of using standalone small-‎scale ‎concentrated ‎solar power collectors in order to generate process ‎heat ‎at ‎a ‎moderate ‎temperature, which directly utilizes thermal energy without the need to generate electricity. ‎A ‎parabolic trough ‎collector (3.6m2) ‎was ‎designed ‎and ‎manufactured, including a dual-axis solar tracking system with and without an insulating function. An ‎insulating ‎cavity ‎was incorporated to ‎minimize the heat ‎losses collected by the absorbed ‎tube. ‎The experiments ‎were ‎carried out during a time of high winds and unfavorable weather ‎in ‎Sabratha City. The findings of the experiments demonstrated that the produced temperature and the collected heat energy progressively increase until they reach their maximum value, and then gradually decrease. The maximum water ‎temperature ‎was 96ºC at ‎a ‎flow rate ‎of ‎‎0.5L/min, and ‎the highest amount of ‎heat energy was 550W/m². ‎Wind speed showed an important impact on the produced temperature; therefore, various comparative experiments were carried out in the same climate condition; ‎the experiment with the insulating function ‎presented the least heat loss, and it takes a higher edge of 11% in terms of efficiency. ‎In addition, the water temperature rose to 120°C where steam was generated at a zero flow rate, while the oil ‎reached 194ºC. In addition, a mathematical model was also implemented to theoretically study energy balance; with little expected discrepancy, its predictions and the experimental results agreed. In conclusion, the results presented reasonable markers of interest despite the poor environmental conditions during the experiments.‎

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Steady-State Modelling of a Parabolic-Trough Concentrating Solar Power Plant

Cited by 3 publications

References 4 publications

Numerical Study on the Effect of Using CuO-Water Nanofluid as a Heat Transfer Fluid on the Performance of the Parabolic Trough Solar Collector

Numerical Study on the Effect of Using CuO-Water Nanofluid as a Heat Transfer Fluid on the Performance of the Parabolic Trough Solar Collector

Alternative Methodology for Modeling Direct Steam Generation in Parabolic Collectors: A Study Case in Northeast Mexico

Experimental Investigation of a Small-Scale Parabolic Trough Concentrated Solar Power ‎Systems

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