Journal articles: 'Compound parabolic trough concentrator'

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Abdulrahim, A.T, I.S Diso, and A. M. EL-Jummah. "SOLAR CONCENTRATORS' DEVELOPMENTS IN NIGERIA: A REVIEW." Continental J. Engineering Sciences 5, no. 1 (2010): 38–45. https://doi.org/10.5281/zenodo.833739.

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The use of concentrators in the forms of solar energy collectors in order to concentrate sunrays for better usage is on the increase worldwide. To this effect, different types of solar concentrators have being developed over the years for various applications. The present study reviewed the various solar concentrators developed in Nigeria such as the parabolic fresnel concentrator, paraboloid solar cooker, parabolic trough collector, conical concentrator, compound parabolic solar concentrator and solar tracking bi-focal collectors. It identified their level of performance and limitations, and proposed suggestions for further improvement. The needs for support by adequate funding through research grants and patronage by governments, corporate bodies and individuals was emphasized.

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Abdulrahim, A.T, I.S Diso, and A. M. EL-Jummah. "SOLAR CONCENTRATORS' DEVELOPMENTS IN NIGERIA: A REVIEW." Continental J. Engineering Sciences 6, no. 3 (2011): 30–37. https://doi.org/10.5281/zenodo.833983.

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The use of concentrators in the forms of solar energy collectors in order to concentrate sunrays for better usage is on the increase world wide. To this effect, different types of solar concentrators have being developed over the years for various applications. The present study reviewed the various solar concentrators developed in Nigeria such as the parabolic fresnel concentrator, paraboloid solar cooker, parabolic trough collector, conical concentrator, compound parabolic solar concentrator and solar tracking bi-focal collectors. It identified their level of performance and limitations, and proposed suggestions for further improvement. The needs for support by adequate funding through research grants and patronage by governments, corporate bodies and individuals was emphasized.

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Cao, Fei, Jiarui Pang, Xianzhe Gu, Miaomiao Wang, and Yanqin Shangguan. "Performance Simulation of Solar Trough Concentrators: Optical and Thermal Comparisons." Energies 16, no. 4 (2023): 1673. http://dx.doi.org/10.3390/en16041673.

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The solar trough concentrator is used to increase the solar radiation intensity on absorbers for water heating, desalination, or power generation purposes. In this study, optical performances of four solar trough concentrators, viz. the parabolic trough concentrator (PTC), the compound parabolic concentrator (CPC), the surface uniform concentrator (SUC), and the trapezoid trough concentrator (TTC), are simulated using the Monte Carlo Ray Tracing method. Mathematical models for the solar trough concentrators are first established. The solar radiation distributions on their receivers are then simulated. The solar water heating performances using the solar trough concentrators are finally compared. The results show that, as a high-concentration ratio concentrator, the PTC can achieve the highest heat flux, but suffers from the worst uniformity on the absorber, which is only 0.32%. The CPC can generate the highest heat flux among the rest three low-concentration ratio solar trough concentrators. Compared with the PTC and the CPC, the TTC has better uniformity, but its light-receiving ratio is only 70%. The SUC is beneficial for its highest uniformity of 87.38%. Thermal analysis results show that the water temperatures inside the solar trough concentrators are directly proportional to their wall temperature, with the highest temperature rise in the PTC and the smallest temperature rise in the TTC. The solar trough concentrators’ thermal deformations are positively correlated to their wall temperatures. The radial deformation of the SUC is much larger than those of other solar trough concentrators. The smallest equivalent stress is found in the SUC, which is beneficial to the long-term operation of the solar water heating system.

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Pardellas, Alberto, Pedro Fortuny Ayuso, Luis Bayón, and Arsenio Barbón. "A New Two-Foci V-Trough Concentrator for Small-Scale Linear Fresnel Reflectors." Energies 16, no. 4 (2023): 1597. http://dx.doi.org/10.3390/en16041597.

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We present the design of an original secondary cavity for use in Small-Scale Fresnel Reflectors in photovoltaic applications. The cavity is similar to the classical V-trough, but the primary reflector system is configured so that there are two focal points on the aperture. The rays coming from each side of the primary system reach the opposite side of the cavity, producing a non-symmetrical distribution of the irradiance. This modifies the acceptance half-angle and allows us to break the maximum limit for the concentration ratio of ideal symmetric concentrators. Our study is analytic, and we provide formulas for any number of reflections. Numerical simulations with a ray-tracing program based on MATLAB are included. We provide a comparison of optical concentration ratio, height and cost parameter between our system and two classical designs with a single focal point: the V-trough and the Compound Parabolic concentrators. This way, we verify that our design yields better concentration ratios while keeping the ray acceptance rate at one. Our solution proves to be better than both the classical one-focus V-trough and the Compound Parabolic concentrator. Specifically, the proposed solution is significantly better than the classical one-focus V-trough in optical concentration ratio, with an increase between 15.02 and 35.95%. As regards the compound parabolic concentrator, the optical concentration ratio is always slightly better (around 4%). The height of the cavity, however, is notably less in this design (around 54.33%).

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Sripadmanabhan Indira, Sridhar, Chockalingam Aravind Vaithilingam, Ramsundar Sivasubramanian, Kok-Keong Chong, R. Saidur, and Kulasekharan Narasingamurthi. "Optical performance of a hybrid compound parabolic concentrator and parabolic trough concentrator system for dual concentration." Sustainable Energy Technologies and Assessments 47 (October 2021): 101538. http://dx.doi.org/10.1016/j.seta.2021.101538.

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Peng, Yanan, Xuedong Liu, Xiaorong Hang, Jing Hou, and Zehui Chang. "Investigation of photothermal performance of compound parabolic concentrator system for soil heating in facility agriculture." Thermal Science, no. 00 (2022): 214. http://dx.doi.org/10.2298/tsci221003214p.

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Aiming at the large carbon emissions of facility agricultural heating in severe cold regions in winter, a Compound Parabolic Concentrator based soil heating system was presented. The system integrated with novel trough Compound Parabolic Concentrator and was used for soil heating in facility agriculture. Following the structure of the Compound Parabolic Concentrator, TracePro software was selected to trace the light in the Compound Parabolic Concentrator. And the variation trend of the light escape rate of the Compound Parabolic Concentrator with the different incident angles was analyzed. Based on the calculation results, the performance of the solar collector system was investigated, and the impact of circulating air velocity on the photothermal performance of the solar collector system was explored. Research results indicate that when the circulating air velocity is 1.4 m/s and the average ambient temperature is about 28.9 ?, the temperature of the system outlet is up to 90.9?C. And the average instantaneous heat collection, maximum photothermal conversion efficiency, and unit area heat collection of the system are 740.6 W, 27.83 % and 0.8 MJm-2, respectively. This research can effectively promote the efficient integration of the solar collector system in facility agriculture.

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Bandala, Erick R., and Claudio Estrada. "Comparison of Solar Collection Geometries for Application to Photocatalytic Degradation of Organic Contaminants." Journal of Solar Energy Engineering 129, no. 1 (2005): 22–26. http://dx.doi.org/10.1115/1.2390986.

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A comparative study between four different solar collectors was carried out using oxalic acid and the pesticide carbaryl as model contaminants. The comparison was performed by means of a figure-of-merit developed for solar driven Advanced Oxidation Technology systems by the International Union of Pure and Applied Chemistry (IUPAC) for standardization purposes. It was found that there is a relationship between the photocatalyst concentration and the overall solar collector performance. Compound parabolic concentrator was the geometry with the highest turnover rate in the photocatalytic process of oxalic acid, followed by the V trough collector, the parabolic concentrator, and, finally, the tubular collector. When a comparative analysis was carried out using the figure of merit (collector area per order, ACO), the parabolic trough concentrator (PTC) showed the highest efficiency (lower ACO values) at low photocatalyst loads. The V trough collector and the compound parabolic collector showed similar ACO values, which decreased as the photocatalyst concentration increased. The tubular collector was the worst in all catalyst concentration ranges, with the higher collection surface by the order of oxalic acid. Photocatalytic degradation of the carbamic pesticide was tested using the same experimental arrangement used for oxalic acid. In this case, the use of the figure-of-merit allowed us to observe the same trend as that displayed for oxalic acid, but with slightly higher ACO values. Results of this work demonstrate that a comparison between different reactor geometries for photocatalytic processes is viable using this figure-of-merit approach and that the generated results can be useful in the standardization of a methodology for solar driven processes comparison and provide important data for the scaling up of the process.

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Liu, Yun, and Hong Zhang. "Selection of Working Fluids for Medium Temperature Heat Pipes Used in Parabolic Trough Solar Receivers." Advanced Materials Research 860-863 (December 2013): 62–68. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.62.

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According to the methods of focusing,the solar thermal generation can be classified to tower system,parabolic trough system and dish-stirling system. The parabolic solar thermal generation system is an important type of solar thermal utilization. Compared to tower and dish-stirling system,the parabolic trough system has many advantages such as the small concentration ratio,the simple process,the low material requirement and the simple tracking device because of many concentrator on-axis tracking. The parabolic trough system is the lowest cost, least close to commercialization,larger potential system optimization,and the most suitable to large operation in this three thermal generation systems [1,. The parabolic trough system is composed of concentrator and receiver,and the receiver is the key component that uses solar energy to heat working fluids in receiver. Therefore,the key problem is how to make the solar energy transfer to subsequent generation system efficiently and stably.

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Lei, Peng, Jun Yuan Lai, Jiong Ma, and Peng Jin. "Simulation and On-Site Performance of a Novel 3D Concentrator for Photovoltaic Application." Applied Mechanics and Materials 457-458 (October 2013): 1467–73. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.1467.

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We presented a family of new 3D concentrators. Simulations showed they could significantly increase the illumination on objective plane compared with 2D trough concentrators. A 3D concentrator prototype with a nominal 35° half acceptance angle was made. Its performance was tested under an indoor solar simulator and by on-site experiment. Under solar simulator, a low cost poly-silicon solar cell coupled with a 3D concentrator achieved a 2.25 times of maximum output power compared with a similar bare solar cell. In the on-site experiment, poly-silicon solar cell with a 3D compound parabolic based reflective concentrator gained an average of 1.4 times maximum output power when the incidence sunlight within the critical angle.

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Paul, Damasen Ikwaba. "Theoretical and Experimental Optical Evaluation and Comparison of Symmetric 2D CPC and V-Trough Collector for Photovoltaic Applications." International Journal of Photoenergy 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/693463.

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This paper presents theoretical and experimental optical evaluation and comparison of symmetric Compound Parabolic Concentrator (CPC) and V-trough collector. For direct optical properties comparison, both concentrators were deliberately designed to have the same geometrical concentration ratio (1.96), aperture area, absorber area, and maximum concentrator length. The theoretical optical evaluation of the CPC and V-trough collector was carried out using a ray-trace technique while the experimental optical efficiency and solar energy flux distributions were analysed using an isolated cell PV module method. Results by simulation analysis showed that for the CPC, the highest optical efficiency was 95% achieved in the interval range of 0° to ±20° whereas the highest outdoor experimental optical efficiency was 94% in the interval range of 0° to ±20°. For the V-tough collector, the highest optical efficiency for simulation and outdoor experiments was about 96% and 93%, respectively, both in the interval range of 0° to ±5°. Simulation results also showed that the CPC and V-trough exhibit higher variation in non-illumination intensity distributions over the PV module surface for larger incidence angles than lower incidence angles. On the other hand, the maximum power output for the cells with concentrators varied depending on the location of the cell in the PV module.

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Alamoudi, Abdullah, Syed Muhammad Saaduddin, Abu Bakar Munir, et al. "Using Static Concentrator Technology to Achieve Global Energy Goal." Sustainability 11, no. 11 (2019): 3056. http://dx.doi.org/10.3390/su11113056.

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Solar energy has demonstrated promising prospects in satisfying energy requirements, specifically through solar photovoltaic (PV) technology. Despite that, the cost of installation is deemed as the main hurdle to the widespread uptake of solar PV systems due to the use of expensive PV material in the module. At this point, we argue that a reduction in PV cost could be achieved through the usage of concentrator. A solar concentrator is a type of lens that is capable of increasing the collection of sun rays and focusing them onto a lesser PV area. The cost of the solar module could then be reduced on the assumption that the cost of introducing the solar concentrator in the solar module design is much lower than the cost of the removed PV material. Static concentrators, in particular, have great promise due to their ability to be integrated at any place of the building, usually on the building facade, windows and roof, due to their low geometrical concentration. This paper provides a historic context on the development of solar concentrators and showcases the latest technological development in static PV concentrators including non-imaging compound parabolic concentrator, V-trough, luminescent solar concentrator and quantum dot concentrator. We anticipated that the static low concentrating PV (LCPV) system could serve to enhance the penetration of PV technology in the long run to achieve the Sustainable Development Goal (SDG) 7—to open an avenue to affordable, reliable, sustainable, and modern energy for all by 2030.

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Sripadmanabhan Indira, Sridhar, Chockalingam Aravind Vaithilingam, Kulasekharan Narasingamurthi, Ramsundar Sivasubramanian, Kok-Keong Chong, and R. Saidur. "Mathematical modelling, performance evaluation and exergy analysis of a hybrid photovoltaic/thermal-solar thermoelectric system integrated with compound parabolic concentrator and parabolic trough concentrator." Applied Energy 320 (August 2022): 119294. http://dx.doi.org/10.1016/j.apenergy.2022.119294.

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Mahammed, Subhi S., Tadahmun Ahmed Yassen, and Hameed Jassim Khalaf. "Theoretical Study of the Compound Parabolic Trough Solar Collector." Tikrit Journal of Engineering Sciences 19, no. 2 (2012): 1–9. http://dx.doi.org/10.25130/tjes.19.2.01.

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Theoretical design of compound parabolic trough solar collector (CPC) without tracking is presented in this work. The thermal efficiency is obtained by using FORTRAN 90 program. The thermal efficiency is between (60-67)% at mass flow rate between (0.02-0.03) kg/s at concentration ratio of (3.8) without need to tracking system. The total and diffused radiation is calculated for Tikrit city by using theoretical equations. Good agreement between present work and the previous work.

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Ouedraogo, Souleymane, Sampawinde Augustin Zongo, Jean-Fidele Nzihou, Tizane Daho, Antoine Bere, and Bila Gerard Segda. "Water Vapor Production by Solar Radiation in a Short Circuit Using a Compound Parabolic Trough Concentrator (CPC)." American Journal of Energy Engineering 10, no. 2 (2022): 35. http://dx.doi.org/10.11648/j.ajee.20221002.12.

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Chinnasamy, Subramaniyan, Subramani Jothirathinam, Kalidasan Balasubramanian, et al. "Investigation on the Optical Design and Performance of a Single-Axis-Tracking Solar Parabolic trough Collector with a Secondary Reflector." Sustainability 13, no. 17 (2021): 9918. http://dx.doi.org/10.3390/su13179918.

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The design of solar concentrating collectors for the effective utilization of solar energy is a challenging condition due to tracking errors leading to different divergences of the solar incidence angle. To enhance the optical performance of solar parabolic trough collectors (SPTC) under a diverged solar incidence angle, an additional compound parabolic concentrator (CPC) is introduced as a secondary reflector. SPTC with CPC is designed and modeled for a single axis-tracking concentrating collector based on the local ambient conditions. In this work, the optical performance of the novel SPTC system with and without a secondary reflector is investigated using MATLAB and TRACEPRO software simulations for various tracking errors. The significance parameters such as the solar incidence angle, aperture length, receiver tube diameter, rim angle, concentration ratio, solar radiation, and absorbed flux are analyzed. The simulation results show that the rate of the absorbed flux on the receiver tube is significantly improved by providing the secondary reflector, which enhances the optical efficiency of the collector. It is found that the optical efficiency of the SPTC with a secondary reflector is 20% higher than the conventional collector system for a solar incidence angle of 2°. This work can effectively direct the choice of optimal secondary reflectors for SPTC under different design and operating conditions.

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Saad, Zainab A., and Alaa H. Shneishil. "The Performance of CPC, V-trough and FPC thermal collectors with different conditions." Journal of Physics: Conference Series 3028, no. 1 (2025): 012020. https://doi.org/10.1088/1742-6596/3028/1/012020.

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Abstract The aim of this study is to utilize solar thermal collectors to harness solar energy and convert it into thermal energy that can be used in various applications. This study designs and evaluates three types of solar thermal collectors: The first type is a flat-plate collector without reflectors, while the second type compound parabolic collector (CPC) includes reflectors in the form of a compound parabolic. The third type uses V-trough collector with V-shaped reflectors to enhance solar energy concentration. The temperature of the water exiting the solar collectors was measured. The collectors were oriented to the south during the month of October, with readings taken every half hour from 9:00 AM to 3:00 PM is the peak time for the heat. The optimal tilt angle in October was determined to be 30°, yielding an outlet water temperature of 77°C in the CPC, 73.5°C in the V-trough, and 61.4°C in the flat plate at peak solar radiation of 1998 W/m2 at 12:00 PM in the CPC, 1853 W/m2 in the V-trough, 1631 W/m2 in the flat plate. When the angle was set to 50°, the temperature reached 66.3°C in the CPC, 62°C in the V-trough, and 54.6°C in the flat plate collector. When the angle was set to 45°, the temperature reached 61.1°C in the CPC, 55.2°C in the V-trough, and 50.3°C in the flat plate collector. When the angle was set to 55°, the temperature reached 63.6°C in the CPC, 58.1°C in the V-trough, and 51.1°C in the flat plate collector. The CPC collector showed the highest recorded water temperature among the tested collectors. This superior performance is due to its ability to concentrate sunlight more effectively, resulting in increased heat absorption and higher water temperatures. As a result, the CPC collector proves to be highly efficient in solar thermal applications.

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Lillo-Bravo, Isidoro, Elena Pérez-Aparicio, Natividad Sancho-Caparrini, and Manuel Silva-Pérez. "Benefits of Medium Temperature Solar Concentration Technologies as Thermal Energy Source of Industrial Processes in Spain." Energies 11, no. 11 (2018): 2950. http://dx.doi.org/10.3390/en11112950.

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This paper analyses the possible applications of medium temperature solar concentration technologies, Compound Parabolic Collector, Linear Fresnel Collector and Parabolic Trough Collector in the Spanish industrial sector. Results of this study allow evaluating whether or not solar technologies are an alternative to conventional sources. This possibility is analyzed energetically, economically and environmentally. Results show that the percentage of solar use is decisive in determining the true thermal energy generation cost. The other essential parameter is the solar field area due to produce economy of scale that reduces investment costs. Fluid temperature has significant influence mainly in Compound Parabolic Collector technology. Results obtained in this paper collect multiple alternatives and allow comparing for different scenarios the suitability to replace conventional energy sources by thermal energy obtained from medium temperature solar concentration technologies from an economic perspective. For instance, for percentage of solar use equal to 100%, the lowest thermal energy generation costs for each technology are 1.3 c€/kWh for Compound Parabolic Collector technology, fluid temperature of 100 °C and industrial process located in Seville, 2.4 c€/kWh for Linear Fresnel Collector technology, fluid temperature of 170 °C and industrial process located in Jaen, 3.3 c€/kWh for technology, fluid temperature of 350 °C and industrial process located in Jaen. These costs are lower than conventional energy sources costs.

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Kaneesamkandi, Zakariya, Abdulaziz Almujahid, and Basharat Salim. "Selection of an Appropriate Solar Thermal Technology for Solar Vapor Absorption Cooling—An MADM Approach." Energies 15, no. 5 (2022): 1882. http://dx.doi.org/10.3390/en15051882.

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Different solar thermal collectors have been used recently to meet the thermal requirements of single effect and double effect vapor absorption cooling systems, making selection of the correct method a challenge. Different attributes of each vapor absorption cooling and solar collector combination are taken into account, and a Multi-Attribute Decision-Making model is used to select the best option. The model requires variables indicating the performance of the system, which are called attributes that are organized into a hierarchical structure called a tree of attributes. The dependent attributes finally end up in the basic attributes representing the input to the model. The technology options considered are flat plate water heating collectors with forced circulation, flat plate air heating collectors with forced circulation, evacuated tube collectors, parabolic trough collectors, and collectors with compound parabolic concentrator. Two types of cooling, namely single effect and double effect, are compared. Three climatic zones with three different cooling loads, ambient temperatures and solar radiation intensity have been considered. Comparison of the solar vapor absorption technologies with vapor compression technology is made considering the major performance factors. The major attributes, namely cost and emissions produced, are compared with conventional vapor compression methods.

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Malato, S., J. Blanco, C. Richter, D. Curcó, and J. Giménez. "Low-concentrating CPC collectors for photocatalytic water detoxification: comparison with a medium concentrating solar collector." Water Science and Technology 35, no. 4 (1997): 157–64. http://dx.doi.org/10.2166/wst.1997.0109.

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The photocatalytic oxidation of 2,4-Dichlorophenol (DCP), using TiO2 suspensions under solar radiation, has been studied at pilot-plant scale at the Plataforma Solar de Almería (PSA). Two different reactor designs were tested: a medium concentrating radiation system called a Parabolic-Trough-Collector Reactor, PTCR, equipped with two motors (azimuth and elevation) to adjust the position of the module perpendicular to the sun, and a low-concentrating radiation system, the Compound-Parabolic-Concentrator Reactor, CPCR, facing south and inclined 37 degrees. Substrates were dissolved in water to required mg L−1 levels in a reservoir tank. In both cases, 0.2 g L−1 of the suspended TiO2 catalyst was used in a 250 L solution of the contaminant, which was recirculated through the photoreactors using a centrifugal pump and an intermediate reservoir tank. The advantages and disadvantages of the two types of photoreactors in DCP oxidation are compared and discussed. The strong potential of photocatalytic peroxydisulphate-assisted degradation in high DCP concentrations was demonstrated in both systems, and chemical actinometry (the decomposition reaction of oxalic acid by radiated uranyl salts) in the CPC reactor is compared with the results obtained in the PTC.

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Ustaoglu, Abid, Umut Ozbey, and Hande Torlaklı. "Numerical investigation of concentrating photovoltaic/thermal (CPV/T) system using compound hyperbolic –trumpet, V-trough and compound parabolic concentrators." Renewable Energy 152 (June 2020): 1192–208. http://dx.doi.org/10.1016/j.renene.2020.01.094.

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Ouedraogo, Souleymane, Augustin S. Zongo, Jean-Fidèle Nzihou, Tizane Daho, and Antoine Béré. "Influence of the Mirror Reflectance Coefficient on the Performance of the Compound Parabolic Trough Concentrator (CPC): Numerical and Experimental Simulation in a Sahelian Environment." Asian Journal of Physical and Chemical Sciences 11, no. 3 (2023): 9–20. http://dx.doi.org/10.9734/ajopacs/2023/v11i3202.

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The objective of our study is to numerically and experimentally simulate the CPC operation according to three different values of the mirror reflectance coefficient. The study not only showed the importance of mirror reflectance in the performance of solar collectors but also estimated which of these three values fits well with the reality in the city of Ouagadougou. The thermal exchanges that took place in the CPC were presented. A matlab program was developed for the calculation and simulation of the different parameters of the solar concentrator. The differential equations governing the heat transfers in the different components of the device were discretized by the advanced finite difference method. They were solved by the Gauss-Seidel method. As for the experimental part, it consisted in the direct measurement of the global solar radiation, of the ambient temperature and of the fluid temperature by means of thermocouples placed on the different parts of the sensor. The experimental values are directly recorded with a datalogger. A statistical study was made using some indicators like coefficient of determination of R2 , root mean square error (RMSE) and percentage of mean absolute error (MAPE). A validation of the obtained results by comparing the calculated values with the experimental values was presented. The results show that among the three values of the reflectance coefficient, the best results on the temperature of the fluid are obtained with the reflectance coefficient equal to 0.68 on the site of Ouagadougou.

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Chavarría-Domínguez, Benjamín, Susana Estefany De León-Aldaco, Nicolás Velázquez-Limón, Mario Ponce-Silva, Jesús Armando Aguilar-Jiménez, and Fernando Chavarría-Domínguez. "A Review of the Modeling of Parabolic Trough Solar Collectors Coupled to Solar Receivers with Photovoltaic/Thermal Generation." Energies 17, no. 7 (2024): 1582. http://dx.doi.org/10.3390/en17071582.

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This paper is a summary of the last ten years of work on the study of parabolic trough collectors (PTCs) and compound parabolic collectors (CPCs) coupled to photovoltaic and thermal solar receiver collectors (SCR-PVTs). While reviewing the state of the art, numerous review papers were found that focused on conventional solar receiver collector (SRC) technology for solar thermal generation. However, there is a lack of review papers summarizing SRC-PVT hybrid technology for solar electric/thermal generation, which would be beneficial for researchers interested in this area of research. This paper provides a review of SRC-PVT hybrid technologies. The theoretical foundations for analyzing and modeling PTC and CPC concentrators coupled to SRC-PVT are described, with an emphasis on modeling through thermal resistances and energy balances. Additionally, this section provides a concise overview of previous studies that have addressed the modeling of PTC and CPC collectors coupled to SCR-PVT, as well as experimental information useful for the validation of new mathematical models of SRC-PVT.

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Goodman, Joel H. "Architectonic Studies with Selected Reflector Concentrating Solar Collectors." Journal of Green Building 2, no. 2 (2007): 78–108. http://dx.doi.org/10.3992/jgb.2.2.78.

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Solar concentrating collectors with reflectors are a developing technology for thermal applications that can be useful to avoid fossil fuel greenhouse gas emissions, reduce demand for imported fuels and lessen biomass burning. The selected reflector concentrators for building integration studies are: fixed nonimaging compound parabolic concentrator (CPC) E-W line troughs, (building interior with evacuated tubes [ET] for the Temperate Zone, and exterior for the Tropics) with N-S involutes and adjustable end “wall” reflector options; and two-axis tracking small heliostats central receiver tower systems. When these reflector concentrating collector systems are integrated within building form, structure, and site planning, they are one of the main organizing design influences—an essential aspect of conceptual design. Schematic architectonic design studies are presented for mid temperature process heat applications beyond temperatures delivered with typical flat-plate thermal collectors (>≈80°C/176°F). Relations between: solar collector technologies, CPC optical characterization, daylighting, building structure, construction, site planning, and interior space usage are discussed for selected building types. These include CPC solar community and institutional kitchens for the Tropics, and house-size verification facilities with building interior ET and reflectors for the Temperate Zone.

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Chen, Fei, Ming Li, and Peng Zhang. "Distribution of Energy Density and Optimization on the Surface of the Receiver for Parabolic Trough Solar Concentrator." International Journal of Photoenergy 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/120917.

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The geometrical optics model about the offset effect of solar rays by the thickness of concentrating mirror and the diametric solar model were established. The radiant flux density on the surface of the receiver for parabolic trough solar concentrator was obtained by numerical calculation with the established models. Charge-coupled device (CCD) was used for testing gray image on the surface of the receiver for parabolic trough solar concentrator. The image was analyzed by Matlab and the radiant flux density on the surface of the receiver for parabolic trough solar concentrator was achieved. It was found that the result of the theory is consistent with that of the experiment, and the relative deviation on the focal length width was 8.7%. The geometrical structure of receiver based on parabolic trough solar concentrator was optimized, a new parabolic receiver has been proposed, and it has been shown that the optimized geometrical structure of receiver was beneficial to improve the working performance of the entire system.

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Saettone, Erich. "Desalination using a parabolic-trough concentrator." Applied Solar Energy 48, no. 4 (2012): 254–59. http://dx.doi.org/10.3103/s0003701x12040081.

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Thomas, A. "Simple structure for parabolic trough concentrator." Energy Conversion and Management 35, no. 7 (1994): 569–73. http://dx.doi.org/10.1016/0196-8904(94)90039-6.

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Lipiński, W., and A. Steinfeld. "Annular Compound Parabolic Concentrator." Journal of Solar Energy Engineering 128, no. 1 (2005): 121–24. http://dx.doi.org/10.1115/1.2148970.

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The annular compound parabolic concentrator (CPC) is a body of revolution consisting of two axisymmetric surfaces produced by rotating a classical two-dimensional CPC around an axis parallel to the CPCs axis. Its ability to further concentrate incoming radiation when used in tandem with a primary solar parabolic concentrator is analyzed by the Monte Carlo ray-tracing technique. Potential applications are found in capturing the annular portion of primary concentrated solar radiation and augmenting its power flux intensity.

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Iqbal, Waseem, Irfan Ullah, and Seoyong Shin. "Nonimaging High Concentrating Photovoltaic System Using Trough." Energies 16, no. 3 (2023): 1336. http://dx.doi.org/10.3390/en16031336.

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Solar energy is a long-established technology, which has zero CO2 emissions, and provides low-cost energy for a given area of land. The concentrator photovoltaic (CPV) has been given preference over the photovoltaic due to its high efficiency. In a CPV system, most of the solar cell area has been replaced with an optical concentrator. Various parabolic trough based CPV systems have been presented where a concentration of <300 is achieved. In the current research, a design is presented to achieve a high concentration of 622×. The design consists of two stages of concentration including parabolic trough as a main concentrator and nonimaging reflective grooves as a secondary concentrator. The trough reflects the incident light towards the secondary reflector where the light is redirected over the solar cell. Design of the two-stage concentrator, ray-tracing simulation, and results are presented. The system achieved an optical efficiency of 79%. The system would also be highly acceptable in solar thermal applications owing to its high concentration.

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Jassim, Abdulsattar M. "Thermal performance of Parabolic Trough Solar Collector." Al-Salam Journal for Engineering and Technology 3, no. 1 (2023): 128–40. http://dx.doi.org/10.55145/ajest.2024.03.01.011.

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The research progress of numerical simulation of parabolic trough solar collector was introduced. Especially the numerical simulation studies of the internal flow field in the collector tube and the external flow field of the concentrator were reviewed. In the study of the internal flow field in the collector tube, the type of heat transfer fluids and the characteristics of optical concentration have a significant effect on the heat collection performance and thermal stress distribution, especially in the water/steam medium heat collection loop. The unique gas-liquid two phase flow superposition of the non-uniform heat flux distribution outside the tube may lead to serious thermal stress bending deformation of the collector tube. In the study of the external flow field of the concentrator, due to the high actual wind speed and the low structural strength of the ultra-thin lens, the concentrator is subjected to wind load deformation, resulting in the loss of optical efficiency, and even leading to the failure of the parabolic trough collector structure, which directly affects the normal operation of the whole collector field.

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Ullah, Fahim, Mansoor K. Khattak, and Kang Min. "Experimental investigation of the comparison of compound parabolic concentrator and ordinary heat pipe-type solar concentrator." Energy & Environment 29, no. 5 (2018): 770–83. http://dx.doi.org/10.1177/0958305x18759791.

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In this research study, we have compared between the two different concentrators with the flat absorber plate receiver of the compound parabolic concentrator heat pipe solar concentrator and ordinary heat pipe flat plate solar concentrator. For the reproduction of solar radiation in the experiment, iodine tungsten lamp was used. Thermal performance comparison of the two types of solar concentrator under different simulating radiation intensity conditions was carried out with including the fluid temperature, instantaneous efficiency, average efficiency, and average heat loss coefficient. The results of the experiment indicate that the compound parabolic concentrator heat pipe-type solar concentrator not only increased the fluid temperature and instantaneous efficiency but also decreased the average heat loss coefficient as compared with the ordinary heat pipe flat plate solar concentrator. It was noticed from the experimental results that the efficiency of compound parabolic heat pipe solar concentrator was higher than ordinary heat pipe solar concentrator up to 6 and 10°C with the light intensity, that is I = 679 W/m2 and I = 892 W/m2, respectively. From the results, it was concluded that the using of compound parabolic heat pipe solar concentrator increased the thermal performance of solar concentrator.

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Murphree, Quincy C. "A point focusing double parabolic trough concentrator." Solar Energy 70, no. 2 (2001): 85–94. http://dx.doi.org/10.1016/s0038-092x(00)00138-9.

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Khonkar, H. E. I., and A. A. M. Sayigh. "Raytrace for compound parabolic concentrator." Renewable Energy 5, no. 1-4 (1994): 376–83. http://dx.doi.org/10.1016/0960-1481(94)90400-6.

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33

Sangotayo, Emmanuel Olayimika, Goodness Temitayo Opatola, Azeez Abdulraheem, and Taye Adeyemo. "Exergetic Analysis of a Parabolic Trough Solar Collector Water Heater." European Journal of Engineering and Technology Research 7, no. 1 (2022): 31–36. http://dx.doi.org/10.24018/ej-eng.2022.7.1.2696.

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Heat exchange mechanisms involved in the conversion of solar energy to heat were determined using a parabolic trough collector. This study's goal is to examine the impact of operational and environmental factors on the energetic, performance of three different Parabolic Trough Collector receivers used to generate hot water. The collectors used uncoated, grey, and black receiver tubes. The parabolic trough concentrator is built of mild steel as the mainframe support with a segmented mirror reflector. Reflectivity is 0.85, rim angle is 90, an aperture area is 2.42 m2, and concentration ratio is 11.7. The parabolic trough concentrator's focal point has galvanized iron receiving tubes. The receiver tubes were fitted individually via the parabolic reflector's focal point. The thermal exergy of each absorber tube was determined while water flowed at 0.003 kg/s. During the investigation, solar radiation, and water temperatures at the absorber tube's input and outflow were all measured. The results show that both the temperature of the heat transfer fluid and the amount of solar radiation have a substantial effect on thermal energetic performance. This concentrator reduces dependency on electric power while minimizing fossil-fuel emissions, reducing pollution.

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Sangotayo, Emmanuel Olayimika, Goodness Temitayo Opatola, Azeez Abdulraheem, and Taye Adeyemo. "Exergetic Analysis of a Parabolic Trough Solar Collector Water Heater." European Journal of Engineering and Technology Research 7, no. 1 (2022): 31–36. http://dx.doi.org/10.24018/ejeng.2022.7.1.2696.

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Heat exchange mechanisms involved in the conversion of solar energy to heat were determined using a parabolic trough collector. This study's goal is to examine the impact of operational and environmental factors on the energetic, performance of three different Parabolic Trough Collector receivers used to generate hot water. The collectors used uncoated, grey, and black receiver tubes. The parabolic trough concentrator is built of mild steel as the mainframe support with a segmented mirror reflector. Reflectivity is 0.85, rim angle is 90, an aperture area is 2.42 m2, and concentration ratio is 11.7. The parabolic trough concentrator's focal point has galvanized iron receiving tubes. The receiver tubes were fitted individually via the parabolic reflector's focal point. The thermal exergy of each absorber tube was determined while water flowed at 0.003 kg/s. During the investigation, solar radiation, and water temperatures at the absorber tube's input and outflow were all measured. The results show that both the temperature of the heat transfer fluid and the amount of solar radiation have a substantial effect on thermal energetic performance. This concentrator reduces dependency on electric power while minimizing fossil-fuel emissions, reducing pollution.

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A, Sivalingam, Ravivarman G, Kalaiyarasan A, Sivaranjani M, Vijayasekaran G, and Dhanasekaran J. "Optimizing Thermal Performance in Parabolic Trough Solar Power Systems: An Experimental Design and Analysis." E3S Web of Conferences 529 (2024): 02005. http://dx.doi.org/10.1051/e3sconf/202452902005.

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The efficiency of a Parabolic Trough (PT) Solar Power Plant heavily relies on its thermal performance. Modern technology has allowed for the creation of more efficient methods of producing steam and of collecting solar energy for thermal power generation. Ministry of New & Renewable Energy (MNRE) built and tested an 11.1 m2 parabolic trough concentrator (PTC). A system that generates steam indirectly by using concentrating solar power (CSP) is examined. The study examined absorbers' thermal properties, thermal efficiency of combined thermal exchangers, concentration ratio, heat efficiency, and steam generation to determine their influence on energy efficiency. The experimental findings display that 557.85 watts of energy are absorbed by the PTC receiver. The PT solar plant system has a thermal energy efficiency of 25 to 29 % and a concentration factor of about 200 on average. The parabolic trough concentrator generates a maximum of 9.1 kg.h-1 of steam.

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Allam, Mohamed, Mohamed Tawfik, Maher Bekheit, and Emad El-Negiry. "Experimental Investigation on Performance Enhancement of Parabolic Trough Concentrator with Helical Rotating Shaft Insert." Sustainability 14, no. 22 (2022): 14667. http://dx.doi.org/10.3390/su142214667.

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The parabolic trough collector provides an extensive range of solar heating and electricity production applications in solar power plants. The receiver tube of the parabolic trough collector has a vital role in enhancing its performance by using different inserts inside it. In the present work, outdoor experimental tests were conducted to study the performance of a small-scale parabolic trough collector equipped with a centrally placed rotating helical shaft. Three cases were studied: a parabolic trough collector without helical shaft insert, a parabolic trough collector with stationary helical shaft insert, and a parabolic trough collector with a rotating helical shaft insert. The experiments are performed for different shaft rotational speeds (4, 11, and 21 RPM) and various flow rates (0.5, 1, 1.5, 2, and 2.5 LPM) of water as a heat transfer fluid. The fluid flow and heat transfer parameters (friction factor, Reynolds number, Nusselt number, and thermal enhancement factor) and performance parameters (thermal, overall, and exergetic efficiencies) are studied. The results indicated that the helical shaft insert had increased the required pumping power for the same flow rate. However, the parabolic trough collector thermal performance has enhanced with the shaft rotational speed. For all cases, the parabolic trough collector efficiency increases with the flow rate of the heat transfer fluid, but the percentage enhancement in efficiency decreases. Using a shaft rotational speed of 21 RPM and heat transfer fluid flow rates of 0.5 LPM leads to maximum thermal efficiency enhancement and a maximum friction factor ratio of 46.47% and 7.7 times, respectively, compared to plain tube. A comparison based on the same pumping power (thermal enhancement factor) shows that the maximum enhancement occurs at a flow rate of 1 LPM, and the efficiency enhancement is about 37% at a shaft rotational speed of 21 RPM. From an economic point of view, using a rotating helical shaft produces the lower annual cost of useful heat per kWh.

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Behera, Debashree Debadatta, Ayush kumar Sahu, Subrat Nayak, Soumya Sonali Kar, Gagan Patra, and Sushmita Rani Pradhan. "Performance Evaluation of a Solar Parabolic trough Concentrator." AMBIENT SCIENCE 9, no. 01 (2022): 20–21. http://dx.doi.org/10.21276/ambi.2022.09.2.nn02.

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38

รติสมิทธ์, วัฒนา. "บทความ นวัตกรรมแผงรับแสงอาทิตย์แบบรางซีพีซี (Compound Parabolic Concentrator) สำหรับกระบวนการทำความร้อน". Unisearch Journal 3, № 1 (2016): 18–24. http://dx.doi.org/10.58837/chula.unisearch.3.1.4.

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39

Feuermann, D., and J. M. Gordon. "Analysis of a Two-Stage Linear Fresnel Reflector Solar Concentrator." Journal of Solar Energy Engineering 113, no. 4 (1991): 272–79. http://dx.doi.org/10.1115/1.2929973.

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The two-stage linear Fresnel reflector solar concentrator is analyzed via an in-depth study of an installed, nominally 220 KWt system. The concentrator includes: (1) a primary linear Fresnel reflector comprised of curved mirrors and (2) a secondary nonimaging CPC-type trough with a tubular receiver. The principal practical design options for the secondary concentrator are evaluated. Via a computer simulation which includes ray-tracing of the primary reflector, we evaluate the sensitivity of energy output to: concentrator optical errors, system geometry, tracking mode, and the option of using flat versus curved primary mirrors. The two-stage Fresnel concentrator can be considerably less expensive than the corresponding parabolic trough collector, but is found to deliver about one-fourth less yearly energy. However, much of this difference could be eliminated through the use of higher-quality CPC reflectors.

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40

Al Imam, Md Forhad Ibne, Rafiqul Alam Beg, and Shamimur Rahman. "Thermal Performance Improvement Study of a Solar Collector with Compound Parabolic Concentrator." European Journal of Engineering Research and Science 3, no. 11 (2018): 78–82. http://dx.doi.org/10.24018/ejers.2018.3.11.970.

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Heating water with solar energy is easy and effective in both domestic and industrial areas. The initial implementation cost of a solar-water-heating system is high but long term use of it makes it cost effective. For geographical location, Bangladesh is very suitable for using it. In a solar collector system, collector area is an important design factor. To achieve better thermal performance, 0.81m2 solar collector was used in this study. Commonly used flat plate collector takes more space to be installed. In Bangladesh, space on the roofs of houses and industries are limited and so there is a little scope to use flat plate collector system. Compound parabolic collector can solve this problem. Solar collector with compound parabolic collector needs less space than flat plate collector with reflector. When compound parabolic concentrator was attached with the solar collector, thermal performance improves. Compare with other alternatives that improve thermal efficiency, compound parabolic concentrator shows better thermal performance. Compare thermal efficiency of the consecutive three months. In this system, when water flow rate increase, outlet water temperature decrease but thermal efficiency increases. It is also observed that when solar intensity increases, thermal efficiency also increases likewise when solar intensity decreases, thermal efficiency also decreases. In this research, outputs of different similar researches are compared to show the effectiveness of the compound parabolic concentrator based solar collector. The compound parabolic concentrator reflects more solar radiation, eventually directs it to the collector and increased the difference between the inlet and outlet water temperature.

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41

Al Imam, Md Forhad Ibne, Rafiqul Alam Beg, and Shamimur Rahman. "Thermal Performance Improvement Study of a Solar Collector with Compound Parabolic Concentrator." European Journal of Engineering and Technology Research 3, no. 11 (2018): 78–82. http://dx.doi.org/10.24018/ejeng.2018.3.11.970.

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Abstract:

Heating water with solar energy is easy and effective in both domestic and industrial areas. The initial implementation cost of a solar-water-heating system is high but long term use of it makes it cost effective. For geographical location, Bangladesh is very suitable for using it. In a solar collector system, collector area is an important design factor. To achieve better thermal performance, 0.81m2 solar collector was used in this study. Commonly used flat plate collector takes more space to be installed. In Bangladesh, space on the roofs of houses and industries are limited and so there is a little scope to use flat plate collector system. Compound parabolic collector can solve this problem. Solar collector with compound parabolic collector needs less space than flat plate collector with reflector. When compound parabolic concentrator was attached with the solar collector, thermal performance improves. Compare with other alternatives that improve thermal efficiency, compound parabolic concentrator shows better thermal performance. Compare thermal efficiency of the consecutive three months. In this system, when water flow rate increase, outlet water temperature decrease but thermal efficiency increases. It is also observed that when solar intensity increases, thermal efficiency also increases likewise when solar intensity decreases, thermal efficiency also decreases. In this research, outputs of different similar researches are compared to show the effectiveness of the compound parabolic concentrator based solar collector. The compound parabolic concentrator reflects more solar radiation, eventually directs it to the collector and increased the difference between the inlet and outlet water temperature.

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42

Angeline Kouambla Epse Yeo, Kpeusseu, Bati Ernest Boya Bi, and Prosper Gbaha. "Modeling and Simulation of a Parabolic Trough Solar Concentrator." Engineering Physics 5, no. 2 (2021): 54. http://dx.doi.org/10.11648/j.ep.20210502.14.

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GARG, ANKUR, and Avadhesh Yadav. "Design Fabrication and Performance Evaluation of Parabolic Trough Concentrator." i-manager's Journal on Instrumentation and Control Engineering 1, no. 2 (2013): 19–25. http://dx.doi.org/10.26634/jic.1.2.2233.

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44

Touaref, Fares, Aicha Saadi, Istvan Farkas, and Istvan Seres. "Design and implementation of parabolic trough solar concentrator distiller." Energy Reports 13 (June 2025): 1138–57. https://doi.org/10.1016/j.egyr.2025.01.001.

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45

Sangotayo, Emmanuel O., and Olukunle E. Itabiyi. "Impact of the Thermophysical Properties of a Cuo-H<sub>2</sub>O-Based Nanofluid on the Performance of a Cylindrical Solar Concentrator." Defect and Diffusion Forum 419 (October 20, 2022): 3–21. http://dx.doi.org/10.4028/p-7vw807.

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Sustainability in energy production, energy security, and global warming are major concerns facing the globe today. Cylindrical Solar Concentrator is extensively utilized for technologically advanced processes, heat, and power plant applications by utilizing daylight sunshine at no running cost. Numerous inputs and characteristics impact the concentrator's performance, with the type of heat transfer fluid and its mass flow rate being two of the most important. This paper gives a numerical investigation of the influence of thermo-physical attribute of CuO water-based nanofluids on the effectiveness of the Parabolic Trough Solar Concentrator in Ogbomosho weather condition (lat. 8o011, long. 4o111).The governing equations of nanofluids with laminar flow and steady state, using iterative relaxation techniques, as well as the efficiency of the concentrator, were solved. A C++ simulation program was developed to investigate the impacts of thermo physical parameters on concentrator efficiency, with nanoparticle sizes ranging from 1 to 10 percent and mass flow rates of 0.1 kg/s, 0.15 kg/s, and 0.2 kg/s, at a constant incident solar insolation flux of 186 W/m2. The results demonstrated that increasing the mass flow rate of the nanofluids improves the heat transmission properties. The thermo physical properties of CuO-based nanofluids and its effects on the performance of the solar parabolic trough collector are being examined. The impact of thermophysical attributes on thermal effectiveness results in improved thermal efficacy, heat transfer characteristics of nanofluids, and factors influencing its features in solar collectors, which determines its usability. The Parabolic Trough Collector system based on nanofluids is a promising technology with applications in green surroundings.

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Widyolar, Bennett, Lun Jiang, and Roland Winston. "Thermodynamics and the segmented compound parabolic concentrator." Journal of Photonics for Energy 7, no. 2 (2017): 028002. http://dx.doi.org/10.1117/1.jpe.7.028002.

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Nattappan, Anbuchezhian, Suganya Priyadharshini Ganesan, Velmurugan Thiagarajan, and Krishnamoorthy Ranganathan. "Design of automation control thermal system integrated with parabolic trough collector based solar plant." Thermal Science, no. 00 (2021): 218. http://dx.doi.org/10.2298/tsci201113218n.

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This paper presents enhanced design for Automation control of processes involved in a solar system which utilizes programmable logic controller to automate tracking system for obtaining maximum solar radiation. Three areas are involved in this proposed multi area system where first and second area considers solar power plant with thermal system based parabolic trough collector with fixed solar isolation and random isolation of solar energy whereas third area comprises of solar thermal system with dish Stirling realistic unit. Energy efficiency can be increased by using solar concentrator along with Stirling engine. Optimization of gain of the controller is by utilizing crow search novel algorithm. Crow search algorithm is an optimization technique, which provides better performance at complex time varying noisy condition and time in-varying noisy condition. The Proposed controller is evaluated by obtaining the optimized parameters of the system whose comparison is done by operating proposed controller with & without renewable sources of energy thereby revealing better performance for both conditions. Testing is done in different areas with fixed solar isolation and random stisolation of solar energy involved in solar thermal power plant based on parabolic trough collector. Gain and parameters of the controller of the solar power plant are optimized by utilizing automation for operation of solar concentrator with parabolic Trough collector. Data acquisition and monitoring is done by human machine interface (HMI) in order to report safe operation. The Simulation results of integrated solar thermal system involving dish Stirling with parabolic trough collector, shows that dynamic response of the proposed controller operating with renewable solar energy is better than that of non-renewable energy source.

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Sharma, V. M., J. K. Nayak, and S. B. Kedare. "Shading and available energy in a parabolic trough concentrator field." Solar Energy 90 (April 2013): 144–53. http://dx.doi.org/10.1016/j.solener.2013.01.002.

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Loni, Reyhaneh, B. Ghobadian, A. B. Kasaeian, M. M. Akhlaghi, Evangelos Bellos, and G. Najafi. "Sensitivity analysis of parabolic trough concentrator using rectangular cavity receiver." Applied Thermal Engineering 169 (March 2020): 114948. http://dx.doi.org/10.1016/j.applthermaleng.2020.114948.

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Caldiño-Herrera, U., Laura Castro, O. A. Jaramillo, J. C. Garcia, Gustavo Urquiza, and Francisco Flores. "Small Organic Rankine Cycle Coupled to Parabolic Trough Solar Concentrator." Energy Procedia 129 (September 2017): 700–707. http://dx.doi.org/10.1016/j.egypro.2017.09.097.

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Journal articles on the topic 'Compound parabolic trough concentrator'

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