Effect of the concentration ratio on the thermal performance of a conical cavity tube receiver for a solar parabolic dish concentrator system

Abbas, Sajid; Yuan, Yanping; Hassan, Atazaz; Zhou, Jinzhi; Ahmed, Ammar; Li, Yang; Bisengimana, Emmanuel

doi:10.1016/j.applthermaleng.2023.120403

Cited by 16 publications

(2 citation statements)

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“…The authors emphasize the significant difficulties that arise during the optimization of systems with paraboloid concentrators. One of the options for overcoming these difficulties is proposed in [8], where the method of optimization of the «paraboloid concentrator -conical heat recei ver» system is given based on multi-criteria experimental stu dies and numerical calculations in the COMSOL Multiphysics ® system. It was determined that the efficiency of such a power system is 66 % at a paraboloid concentration level of 31.15.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Construction of a mathematical model and approximate analytical solution to the problem of energy exchange in the «sun ‒ paraboloid concentrator ‒ heat receiver» system

Masalykin

Knysh

2023

EEJET

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The object of research is the processes of radiation transfer in the «Sun – paraboloid concentrator – heat receiver» system. There are many factors that affect the value of the density of the concentrated heat flux that reaches the surface of the heat sink. The study of the influence of these factors on the overall energy indicators of the system is an important scientific problem that was solved in this work. To solve this problem, a generalized mathematical model of the radiation transfer process in the «Sun – concentrator – heat receiver» system was built, which was adapted for a paraboloid concentrator. The constructed mathematical model was solved by an approximate analytical method, which took into account the integral and discrete parameters of the system, as well as the probability distribution of aberrations of the concentrator surface, its defocusing, and other random influences. The dimensionless density of the heat flux on the surface of the heat sink for a mathematically ideal and real paraboloid concentrator of a fixed geometry was determined. Using the found analytical solution, the results obtained on the basis of the Monte Carlo method were verified. Analytical and numerical results for a mathematically ideal and a real concentrator with minor aberrations and a clear orientation to the Sun agree within the permissible error. For a real concentrator with defocusing, a deviation of numerical data from analytical data was observed. The presence of deviations is associated with a simplification in the interpretation of the analytical probability distribution, in which it is impossible to take into account each influence separately. The obtained analytical results will be useful in the development of real power plants and can be used practically at the stage of checking the adequacy of the system model

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Construction of a mathematical model and approximate analytical solution to the problem of energy exchange in the «sun ‒ paraboloid concentrator ‒ heat receiver» system

Masalykin

Knysh

2023

EEJET

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“…However, dish technology is not widely adopted, and the stability of conversion efficiency needs to be extended to increase commercial penetration [16]. Only a few studies focus on the heating part of CSPs [15,17,18]. Coventry et al highlighted the operation of thermal energy of a CSP system (2016), where an output of the system in addition to electricity is also the production of pressurised hot water, which can be used in a thermal energy distribution network [15].…”

Section: Introductionmentioning

confidence: 99%

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water System

Tursunović,

Papurello

2024

Clean Technol.

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The energy sector is the main source of greenhouse gases, so it has the highest potential for improvement. The improvements can be achieved by generating energy from renewable sources. It is necessary to combine production from renewable sources with storage systems. Thermal energy storage using concentrated solar power systems is a promising technology for dispatchable renewable energy that can guarantee a stable energy supply even in remote areas without contributing to greenhouse gas emissions during operation. However, it must be emphasised that greenhouse gases and other impacts can occur during the production process of concentrating solar system components. This paper analyses the receiver design to produce thermal energy for the existing CSP dish plant at the Energy Center of the Politecnico di Torino. The plant is designed to produce electrical energy in the spring and summer periods. In addition to this energy production, the CSP can be adopted to produce thermal energy, through hot water, during the less favourable periods of the year in terms of global solar radiation. The surface heat flux is calculated in the first part of the analysis to obtain the maximum internal temperature in the receiver, which is 873.7 °C. This value is a constraint for the choice of material for the solar receiver. A life cycle assessment is performed to compare the emissions generated during the production of the main components of the CSP system with the emissions generated by the methane-fuelled water heater to produce the same amount of thermal energy. It can be concluded that the production of the main components of the CSP system results in lower greenhouse gas emissions than the operational phase of a conventional system. Given the assumptions made, the utilization of methane leads to the emission of approximately 12,240 kg of CO2, whereas the production of the CSP system results in emissions totalling 5332.8 kg of CO2 equivalent

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Performance evaluation and optimization of solar dish concentrator in the upper Egypt region

Mohammed,

Shmroukh,

Ghazaly

et al. 2023

Env Prog and Sustain Energy

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The goal of this study is to optimize and examine the effect of different rim angles and focus lengths on the performance of a solar parabolic dish. To achieve these goals, a solar parabolic dish concentrator was constructed with different focus point positions and tested under the climatic conditions of the Upper Egypt region in Qena city, with the location of (Latitude: 26.16°, Longitude: 32.71°). The preliminary experimental days started on 18th and lasted on 20th of September 2022, and the tested rim angles were 70°, 80°, and 60°. The results showed that the performance of the proposed solar parabolic dish concentrator was enhanced when the rim angle was between 60° and 70°, otherwise, the performance was regressed when the rim angle was between 70° and 80°. To optimize the rim angle, another available rim angle was selected to increase the performance of the solar dish fixed at 65°, and this angle was tested on 21st of September 2022. The results demonstrated that the thermal efficiency of the solar parabolic dish with rim angle of 65° was higher than that of 70°, 80°, and 60°, and the recorded thermal efficiency reached up to 79.5%, 39.4%, 5.84%, and 28.4%, respectively, under the tested rim angles.

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Effect of the concentration ratio on the thermal performance of a conical cavity tube receiver for a solar parabolic dish concentrator system

Cited by 16 publications

References 50 publications

Construction of a mathematical model and approximate analytical solution to the problem of energy exchange in the «sun ‒ paraboloid concentrator ‒ heat receiver» system

Construction of a mathematical model and approximate analytical solution to the problem of energy exchange in the «sun ‒ paraboloid concentrator ‒ heat receiver» system

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water System

Performance evaluation and optimization of solar dish concentrator in the upper Egypt region

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