Optical qualification of a solar parabolic concentrator using photogrammetry technique

Skouri, Safa; Ali, Abdessalem Ben Haj; Bouadila, Salwa; Nasrallah, Sassi Ben

doi:10.1016/j.energy.2015.07.047

Cited by 15 publications

(11 citation statements)

References 29 publications

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“…The mean concentration factor of the parabolic dish is

C_{R} = \frac{A_{c}}{A_{italicab}} η_{c} .

where A c is the area of the dish and A ab is the area of the receiver.…”

Section: Thermal Energy Analysis Of Solar Concentrating Systemmentioning

confidence: 99%

“… θ is the incidence angle of solar radiation ( θ = 0°) and γ is the absorber intercept factor, which is equal to 95%. Consequently, the optical efficiency η op is equal to 85% …”

Section: Thermal Energy Analysis Of Solar Concentrating Systemmentioning

confidence: 99%

“…Combining Equations (11), (15), (16), and (18), the thermal efficiency of the absorber (SHE) can be determined as follow:…”

Section: Thermal Energy Efficiency Of the Receiver (She)mentioning

confidence: 99%

“…Figure 9 shows the experimental variations with local time of the useful, absorbed, and losses energy of the new concept of absorber (solar heat exchanger [SHE]). The absorbed energy through the SPC is given by Equation (16), and it depends on the optical efficiency (η op = 0.85), solar dish aperture area, and the direct solar radiation. Figure 9 watches that the absorbed energy in the experimental test varied between 770 and 800 W/m 2 .…”

Section: Thermal Characterization Of a New Absorber (She)mentioning

confidence: 99%

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Thermal optimization of solar dish collector for indirect vapor generation

et al. 2019

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Summary This work presented the performance analysis of a solar parabolic concentrator prototype. The purpose of this paper is to achieve most quantity of vapor production with different water flows. The principal component of the solar concentrator is a new absorber concept that absorbs reflected solar rays and transports it to a heat exchanger in order to generate vapor. Climatic conditions, inlet/outlet oil temperatures of the tubular solar heat exchanger, water tank temperature, and inlet/outlet water temperatures of the mixed heat exchanger were recorded experimentally during three days in November 2018. The absorbed energy, losses energy, concentrated energy, and vapor heat energy of the system were determined. Results of this work, the solar system provides thermal energy efficiency varied from 60% to 70% and a concentration factor around 350 for three water mass flow rates. In this experiment, the optimum value of vapor mass is 6 kg/h with 0.016 kg/s of water flow. Consequently, to achieve the most quantity of vapor, the water flow should be decreased.

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“…The mean concentration factor of the parabolic dish is

C_{R} = \frac{A_{c}}{A_{italicab}} η_{c} .

where A c is the area of the dish and A ab is the area of the receiver.…”

Section: Thermal Energy Analysis Of Solar Concentrating Systemmentioning

confidence: 99%

“… θ is the incidence angle of solar radiation ( θ = 0°) and γ is the absorber intercept factor, which is equal to 95%. Consequently, the optical efficiency η op is equal to 85% …”

Section: Thermal Energy Analysis Of Solar Concentrating Systemmentioning

confidence: 99%

“…Combining Equations (11), (15), (16), and (18), the thermal efficiency of the absorber (SHE) can be determined as follow:…”

Section: Thermal Energy Efficiency Of the Receiver (She)mentioning

confidence: 99%

Section: Thermal Characterization Of a New Absorber (She)mentioning

confidence: 99%

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Thermal optimization of solar dish collector for indirect vapor generation

et al. 2019

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“…These have high contrast against their background to enable the centering algorithm to be accurate to the sub-pixel level [17,18]. An alternative to the printed targets would be retroreflecitve targets [19][20][21]. Printed targets have the advantage of the flexibility of varying sizes, patterns, and point density as well as being disposable and cheap.…”

Section: Equipmentmentioning

confidence: 99%

Photogrammetry for Concentrating Solar Collector Form Measurement, Validated Using a Coordinate Measuring Machine

2019

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Concentrating solar power systems currently have a high capital cost when compared with other energy generating systems. The solar energy is captured in the form of thermal energy rather than direct electrical, which is attractive as thermal energy is more straightforward and currently more cost-effective to store in the amounts required for extended plant operation. It is also used directly as industrial process heat, including desalination and water purification. For the technology to compete against other generating systems, it is crucial to reduce the electrical energy cost to less than $0.10 per kilowatt-hour. One of the significant capital costs is the solar field, which contains the concentrators. Novel constructions and improvements to the durability and lifetime of the concentrators are required to reduce the cost of this field. This paper describes the development and validation of an inexpensive, highly portable photogrammetry technique, which has been used to measure the shape of large mirror facets for solar collectors. The accuracy of the technique has been validated to show a whole surface measurement capability of better than 100 m using a large coordinate measuring machine. Qualification of facets of the MATS plant was performed during its installation phase, giving results of the shape, slope and intercept errors over each facet.

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A review study on mathematical modeling of solar parabolic d ish‐Stirling system used for electricity generation

et al. 2021

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Summary The intensity of the solar radiations falling on the earth surface ranges between 5 and 7.5 kWh/m2/day. For the non‐directed solar thermal application, higher intensity level is required. The Concentrating Solar Power (CSP) technology incorporating reflecting mirrors reinforces the solar radiations with high intensity. It is suitable for various applications; that is, space heating, space cooling, and cooking, steam, and power generation without any polluted emissions. Meanwhile, among the various CSP technologies, the Concentrating Solar Parabolic Dish Stirling engine System (CSP‐DSS) has got attention of the research community due to its various attractive features. The output power and efficiency of the CSP‐DSS depend upon their geometrical, optical, and operating parameters. It is therefore, necessary to mathematically investigate the influence of these parameters on system performance before its design and installation. In the existing literature reported, only some specific parameters of the CSP‐DSS have been focused and considered to investigate the system performance. To the best of author's knowledge, no literature has been found to provide the mathematical modeling of all the system parameters in a single manuscript to study and investigate their influence on the system performance. Hence, this review article aims to compile, expansively review and organize the systematical mathematical modeling for all optical, geometrical, and operating parameters of the CSP‐DSS along with the system design methodology. Likewise, the effects of these parameters on the system output power and efficiency under various operating conditions have been investigated. In addition, comprehensive study of CSP‐DSS components along with their classification have been painstakingly discussed to determine optimal system configuration. Finally, the latest review study in the field of CSP‐DSS have been deeply and comprehensively discussed. This review study concludes that, the kinematic gamma type Stirling engine coupled with Permanent Magnet DC generator (PMDC) and Azimuth‐Altitude Dual Axis Tracker (AADAT) could be the better CSP‐DSS design and configuration in context of the standalone off‐grid electricity generation system.

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Optical qualification of a solar parabolic concentrator using photogrammetry technique

Cited by 15 publications

References 29 publications

Thermal optimization of solar dish collector for indirect vapor generation

Thermal optimization of solar dish collector for indirect vapor generation

Photogrammetry for Concentrating Solar Collector Form Measurement, Validated Using a Coordinate Measuring Machine

A review study on mathematical modeling of solar parabolic d ish‐Stirling system used for electricity generation

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