Design and experimental characterization of a CPC solar collector

Casano, G.; Fossa, Marco; Stefano, Piva

doi:10.18280/ijht.35sp0125

Cited by 7 publications

(3 citation statements)

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“…Therefore gives the amount of optical efficiency. Figure (7) shows the irradiance distribution of the intensity illumination on the detector surface for CPC having concentration ratio c=2.Zemax program that provides this feature for one axis, and since reading is symmetrical for the detector, we choose one axis; let it be x axis.…”

Section: Resultsmentioning

confidence: 99%

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Efficiency Evaluation of Solar Concentrator without Tracking System Type of Compound Parabolic Concentrator (CPC)

Rusul¹,

Alaa²

2021

IHJPAS

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It is useful to analyze any optical system theoretically before proceeding with its design in order to ensure the effectiveness of the design through computer simulations that are important and useful in designs for the ability to predict the performance of solar concentrator under any conditions. For this design, non-sequential ray tracing mode wasused in the Zimax program with a light source that simulated solar radiation. The purpose of the design of a compound parabolic concentrator (CPC) is to take advantage of the solar radiation that falls on it without the need for an efficiently tracked system within certain limits of the angle of solar radiation fall known as the acceptance angle. That is, obtaining the largest possible number of rays received inside the CPC through reflections in the inner walls of it, which give a large amount of thermal energy to the surface of the recipient, which in turn gets this energy to be used to create electrical energy. The efficiency of receiving reflected solar radiation in this type of concentrator is great compared to other solar concentrators. Simulated design of solar reflector concentrator has been presented. The concentrator is a type of compound parabolic concentrator (CPC) involved of internal reflector surface (Hollow and within Poly methyl methacrylate (PMMA) polymer material) without tracking system. CPC has the property to overcome problems result from variation of incidence angle of the sun during daytime. Because the tracking system expensive and has technical problems. The efficiency of CPC has been obtained by using Zemax optical design program, for different designs has concentration ratio(c=1,2,3,4,5). That is, the ratio of the output aperture to the input aperture. Taking into account the angle of acceptance that plays a major role in the form of design and its efficiency the results are shown when designing the model with radial aperture of (50mm) and length of (500mm).The design of concentrations ratio is depends on the acceptance angle. c=5 at normal incident angle (ÆŸ=0). And it is almost similar if the material is used PMMA within CPC, and degradation of efficiency with increasing the incidence angle.

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Section: Resultsmentioning

confidence: 99%

“…al. are Design and develop of building a prototype for the CPC, and the immediate efficacy of the model was measured where it was tested when performing an outdoor steady state experiment [7]. Evangelos Bellos et.al.…”

Section: Figure2:variation Of Concentration Ratio With the Acceptance Anglementioning

confidence: 99%

Efficiency Evaluation of Solar Concentrator without Tracking System Type of Compound Parabolic Concentrator (CPC)

Rusul¹,

Alaa²

2021

IHJPAS

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“…In the present paper, which follows a preliminary one [12] the attention is focused on the design and testing of a solar collector where a high performance evacuated tube is coupled with a CPC. The design of the solar mirror was carried out by imposing a series of constraints related to a broad acceptance angle (about 30°), reduced mirror height, possibility to employ a displaced tubular receiver.…”

Section: Introductionmentioning

confidence: 99%

Development and testing of a compound parabolic collector for large acceptance angle thermal applications

Casano¹,

Fossa²,

Piva³

2017

IJHT

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Concentrating the solar energy is a well-known technique for increasing the working temperatures of solar collectors while maintaining high conversion efficiencies. In the industrial and residential sectors medium temperature solar collectors (80-250°C) are gaining more and more interest for power production and absorption cycle applications. In the present paper the attention is focused on the design and testing of a solar collector where a high performance evacuated tube is coupled with a Compound Parabolic Concentrator. The design of the solar mirror is carried out by imposing a series of constraints related to a broad acceptance angle (about 30°), reduced mirror height, possibility to employ a displaced tubular receiver. The mirror surface was tested in laboratory with a ray tracing approach. The complete CPC collector was finally tested under real outdoor operating conditions according to the Standard EN 12975-2. In such a way the instantaneous efficiency of the collector has been evaluated. The main findings are related to the effects of the concentration ratio and truncated height on the collector efficiency; they also highlight some limits and possible corrections to be employed when the results of the Outdoor steady state test method are applied in daily simulations of the collector behavior.

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