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Автор: Grafiati

Опубліковано: 6 вересня 2023

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1

Aykapadathu, Muhsin, Mehdi Nazarinia, and Nazmi Sellami. "Design and Fabrication of Absorptive/Reflective Crossed CPC PV/T System." Designs 2, no. 3 (August 6, 2018): 29. http://dx.doi.org/10.3390/designs2030029.

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A crossed compound parabolic concentrator (CCPC) is a non-imaging concentrator which is a modified form of a circular 3D compound parabolic concentrator (CPC) obtained by orthogonal intersection of two 2D CPCs that have an optical efficiency in line with that of 3D CPC. The present work is about the design and fabrication of a new generation of solar concentrator: the hybrid photovoltaic (PV)/thermal absorptive/reflective CCPC module. The module has a 4× CCPC structure truncated to have a concentration of 3.6× with a half acceptance angle of 30°. Furthermore, an experimental rig was also fabricated to test the performance of the module and its feasibility in real applications such as building-integrated photovoltaic (BIPV). 3D printing and Computer Numerical Control (CNC) milling technologies were utilized to manufacture the absorber and reflective parts of the module.

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2

Parthiban, Anandhi, T. K. Mallick, and K. S. Reddy. "Integrated optical-thermal-electrical modeling of compound parabolic concentrator based photovoltaic-thermal system." Energy Conversion and Management 251 (January 2022): 115009. http://dx.doi.org/10.1016/j.enconman.2021.115009.

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3

Atheaya, Deepali, Arvind Tiwari, and G. N. Tiwari. "Experimental validation of a fully covered photovoltaic thermal compound parabolic concentrator system." Engineering Science and Technology, an International Journal 19, no. 4 (December 2016): 1845–56. http://dx.doi.org/10.1016/j.jestch.2016.06.014.

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4

Masood, Faisal, Perumal Nallagownden, Irraivan Elamvazuthi, Javed Akhter, and Mohammad Azad Alam. "A New Approach for Design Optimization and Parametric Analysis of Symmetric Compound Parabolic Concentrator for Photovoltaic Applications." Sustainability 13, no. 9 (April 21, 2021): 4606. http://dx.doi.org/10.3390/su13094606.

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A compound parabolic concentrator (CPC) is a non-imaging device generally used in PV, thermal, or PV/thermal hybrid systems for the concentration of solar radiation on the target surface. This paper presents the geometric design, statistical modeling, parametric analysis, and geometric optimization of a two-dimensional low concentration symmetric compound parabolic concentrator for potential use in building-integrated and rooftop photovoltaic applications. The CPC was initially designed for a concentration ratio of “2×” and an acceptance half-angle of 30°. A MATLAB code was developed in house to provoke the CPC reflector’s profile. The height, aperture width, and concentration ratios were computed for different acceptance half-angles and receiver widths. The interdependence of optical concentration ratio and acceptance half-angle was demonstrated for a wide span of acceptance half-angles. The impact of the truncation ratio on the geometric parameters was investigated to identify the optimum truncation position. The profile of truncated CPC for different truncation positions was compared with full CPC. A detailed statistical analysis was performed to analyze the synergistic effects of independent design parameters on the responses using the response surface modeling approach. A set of optimized design parameters was obtained by establishing specified optimization criteria. A 50% truncated CPC with an acceptance half-angle of 21.58° and receiver width of 193.98 mm resulted in optimum geometric dimensions.

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5

Othman, M. Y., B. Yatim, K. Sopian, and M. N. A. Bakar. "Double-Pass Photovoltaic-Thermal Solar Air Collector with Compound Parabolic Concentrator and Fins." Journal of Energy Engineering 132, no. 3 (December 2006): 116–20. http://dx.doi.org/10.1061/(asce)0733-9402(2006)132:3(116).

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6

Atheaya, Deepali, Arvind Tiwari, G. N. Tiwari, and I. M. Al-Helal. "Analytical characteristic equation for partially covered photovoltaic thermal (PVT) compound parabolic concentrator (CPC)." Solar Energy 111 (January 2015): 176–85. http://dx.doi.org/10.1016/j.solener.2014.10.025.

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7

Nasseriyan, Pouriya, Hossein Afzali Gorouh, João Gomes, Diogo Cabral, Mazyar Salmanzadeh, Tiffany Lehmann, and Abolfazl Hayati. "Numerical and Experimental Study of an Asymmetric CPC-PVT Solar Collector." Energies 13, no. 7 (April 3, 2020): 1669. http://dx.doi.org/10.3390/en13071669.

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Анотація:

Photovoltaic (PV) panels and thermal collectors are commonly known as mature technologies to capture solar energy. The efficiency of PV cells decreases as operating cell temperature increases. Photovoltaic Thermal Collectors (PVT) offer a way to mitigate this performance reduction by coupling solar cells with a thermal absorber that can actively remove the excess heat from the solar cells to the Heat Transfer Fluid (HTF). In order for PVT collectors to effectively counter the negative effects of increased operating cell temperature, it is fundamental to have an adequate heat transfer from the cells to the HTF. This paper analyzes the operating temperature of the cells in a low concentrating PVT solar collector, by means of both experimental and Computational Fluid Dynamics (CFD) simulation results on the Solarus asymmetric Compound Parabolic Concentrator (CPC) PowerCollector (PC). The PC solar collector features a Compound Parabolic Concentrator (CPC) reflector geometry called the Maximum Reflector Concentration (MaReCo) geometry. This collector is suited for applications such as Domestic Hot Water (DHW). An experimental setup was installed in the outdoor testing laboratory at Gävle University (Sweden) with the ability to measure ambient, cell and HTF temperature, flow rate and solar radiation. The experimental results were validated by means of an in-house developed CFD model. Based on the validated model, the effect of collector tilt angle, HTF, insulation (on the back side of the reflector), receiver material and front glass on the collector performance were considered. The impact of tilt angle is more pronounced on the thermal production than the electrical one. Furthermore, the HTF recirculation with an average temperature of 35.1 °C and 2.2 L/min flow rate showed that the electrical yield can increase by 25%. On the other hand, by using insulation, the thermal yield increases up to 3% when working at a temperature of 23 °C above ambient.

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8

Tripathi, Rohit, G. N. Tiwari, and I. M. Al-Helal. "Thermal modelling of N partially covered photovoltaic thermal (PVT) – Compound parabolic concentrator (CPC) collectors connected in series." Solar Energy 123 (January 2016): 174–84. http://dx.doi.org/10.1016/j.solener.2015.11.014.

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9

Shoeibi, Shahin, Hadi Kargarsharifabad, Seyed Ali Agha Mirjalily, and Mojtaba Zargarazad. "Performance analysis of finned photovoltaic/thermal solar air dryer with using a compound parabolic concentrator." Applied Energy 304 (December 2021): 117778. http://dx.doi.org/10.1016/j.apenergy.2021.117778.

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10

Atheaya, Deepali, Arvind Tiwari, and G. N. Tiwari. "Exergy analysis of photovoltaic thermal (PVT) compound parabolic concentrator (CPC) for constant collection temperature mode." Solar Energy 135 (October 2016): 222–31. http://dx.doi.org/10.1016/j.solener.2016.05.055.

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11

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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12

Roshdan, Wan Nur Adilah Wan, Hasila Jarimi, Adnan Ibrahim, Kamaruzzaman Sopian, and Ali H. A. Al-Waeli. "Indoor Performance Analysis of a Novel Double-Pass photovoltaic/thermal (PV/T) Asymmetric Compound Parabolic Concentrator (ACPC) Solar Collector." IOP Conference Series: Materials Science and Engineering 1278, no. 1 (February 1, 2023): 012009. http://dx.doi.org/10.1088/1757-899x/1278/1/012009.

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Abstract A photovoltaic/thermal (PV/T) solar collector combines solar photovoltaic (PV) modules and solar thermal that operates simultaneously to generate electricity and thermal energy. Design parameters, operating conditions and environmental factors all have a significant impact on the performance of a PV/T solar collector. This research investigates the influence of the variation in the air mass flow rate to the performance of a novel double-pass photovoltaic/thermal (PV/T) asymmetric compound parabolic concentrator (PV/T-ACPC) solar collector. To investigate performance of the solar collector, it was tested indoors using a solar simulator at average solar radiation of 800 W/m2 with the variation in the air mass flow rate ranging from 0.0074 kg/s to 0.0900 kg/s. From the analysis, we found that as the air mass flow rate increases, the thermal efficiency and electrical efficiency increases from 37.15 % to 60.51 %, and 2.51 % to 3.29 % respectively. Meanwhile while the difference in the air output temperature and PV panel temperature were found to decrease from 19.64 °C to 2.63 °C, and 66.83 °C to 41.86 °C respectively. We also found that, as the mass flow rate continues to increase, it will reach its ‘optimum point’ and approaching a plateau at mass flow rate of 0.0262 kg/s. The finding is crucial since the collector needs to be operated at its optimum flow rate to ensure optimum efficiencies at the optimum temperature rise of the useful air supply.

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13

Dayanand, Alok, Muhsin Aykapadathu, Nazmi Sellami, and Mehdi Nazarinia. "Experimental Investigation of a Novel Absorptive/Reflective Solar Concentrator: A Thermal Analysis." Energies 13, no. 5 (March 10, 2020): 1281. http://dx.doi.org/10.3390/en13051281.

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This paper presents the experimental investigation of a novel cross-compound parabolic concentrator (CCPC). For the first time, a CCPC module was designed to simultaneously work as an electricity generator and collect the thermal energy present in the module which is generated due to the incident irradiation. This CCPC module consists of two regions: an absorber surface atop the rig and a reflective region below that to reflect the irradiation onto the photovoltaic (PV) cell, coupled together to form an absorptive/reflective CCPC (AR-CCPC) module. A major issue in the use of PV cells is the decrease in electrical conversion efficiency with the increase in cell temperature. This module employs an active cooling system to decrease the PV cell temperature, optimizing the electrical performance and absorbing the heat generated within the module. This system was found to have an overall efficiency of 63%, which comprises the summation of the electrical and thermal efficiency posed by the AR-CCPC module.

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14

Tiwari, G. N., Md Meraj, M. E. Khan, R. K. Mishra, and Vihang Garg. "Improved Hottel-Whillier-Bliss equation for N-photovoltaic thermal-compound parabolic concentrator (N-PVT-CPC) collector." Solar Energy 166 (May 2018): 203–12. http://dx.doi.org/10.1016/j.solener.2018.02.058.

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15

Atheaya, Deepali, Arvind Tiwari, G. N. Tiwari, and I. M. Al-Helal. "Performance evaluation of inverted absorber photovoltaic thermal compound parabolic concentrator (PVT-CPC): Constant flow rate mode." Applied Energy 167 (April 2016): 70–79. http://dx.doi.org/10.1016/j.apenergy.2016.01.023.

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16

Bansal, Sarthak, and Dharamveer Singh. "A Comparative Study of Active Solo and Dual Inclined Compound Parabolic Concentrator Collector Solar Stills Based on Exergoeconomic and Enviroeconomic." International Journal for Research in Applied Science and Engineering Technology 10, no. 11 (November 30, 2022): 524–44. http://dx.doi.org/10.22214/ijraset.2022.47297.

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Abstract: The Parabolic Concentrator (CPC) is a uniform photovoltaic thermal (PVT) compound linked to solar photos (N) of water collectors called PVT-CPC Active Solar Filtration System Analysis. New Delhi Analysis is done for a solar filter system for a given particle size under weather conditions. We assess efficiency, system productivity, and life cycle cost analysis. The Thermal Model Life cycle cost efficiency (LCCE), designed for LCCE analysis, is considered the only and double-doubled effective PVT-CPC system for filtering solar energy recovery time. In this work, we need to analyze the appropriate points of the collector and extract the bulk of the system. Tests were performed on dual-solar and dual-inclined PVT-CPC operating systems with a single basin size and a water depth of 0.14 m, with yield on yearly basis, factor of energy payback, and efficiency of life cycle cost conversion analysis of 5.0%, 12.63%. Moreover, 22.21% is two times higher than the solo inclined system. In addition, the water return, one PVT-CPC, and two turns have been found to have a recovery time (EPT) with an interest rate of 5%. The solar filter system is 10.89% and 17.99% higher than the solo inclined photovoltaic thermal compound parabolic concentrator activated solar filter system, respectively. The above analysis concluded, we can confirm that the two bends are better than the active PVT-CPC system for solar filtering, which is the only inclination of the depth of 0.14 m in water based on daily based analysis. If depth of water 0.14 m is more significant, for basin size provided the performance of one inline is improved and is better than curved solar-powered filtering systems. The upgraded system lasts longer and can meet potable water and DC electricity on sunny commercial days.

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17

Masood, Faisal, Nursyarizal Bin Mohd Nor, Perumal Nallagownden, Irraivan Elamvazuthi, Rahman Saidur, Mohammad Azad Alam, Javed Akhter, Mohammad Yusuf, Mubbashar Mehmood, and Mujahid Ali. "A Review of Recent Developments and Applications of Compound Parabolic Concentrator-Based Hybrid Solar Photovoltaic/Thermal Collectors." Sustainability 14, no. 9 (May 5, 2022): 5529. http://dx.doi.org/10.3390/su14095529.

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The concentrating photovoltaic/thermal (PVT) collectors offer the benefits of the reduced per-unit price of electrical energy and co-generation of electrical and thermal energies by intensifying the solar irradiation falling on the hybrid receiving plane. The compound parabolic concentrating (CPC) collectors have appeared as a promising candidate for numerous applications in the field of solar energy due to their ability to collect both direct and diffuse solar radiation and suitability for stationary installation. Over the last few decades, various configurations of CPC collectors have been proposed and investigated by different researchers for the simultaneous generation of electrical and thermal energies. This article presents a comprehensive review of historical and recent developments and applications of CPC-based hybrid PVT systems. The review focuses on the heat extraction mechanisms and commonly used application areas of CPC-PVT systems. The innovative design configurations proposed by different researchers have been reviewed in detail. The outputs of CPC-PVT systems are generally found to be superior to their counterparts without CPCs, which justifies their increased popularity. Due to dual outputs, the hybrid CPC-PVT systems are considered to be suitable for rooftop and building façade integrated applications. Finally, future recommendations have been enlisted, highlighting the potential research opportunities and challenges for the prospective researchers working in the field of concentrating solar PVT systems.

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18

Tiwari, Deepak, Ahmad Faizan Sherwani, Deepali Atheaya, Anil Kumar, and Nishant Kumar. "Thermodynamic analysis of Organic Rankine cycle driven by reversed absorber hybrid photovoltaic thermal compound parabolic concentrator system." Renewable Energy 147 (March 2020): 2118–27. http://dx.doi.org/10.1016/j.renene.2019.10.018.

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19

Li, Guiqiang, Gang Pei, Ming Yang, Jie Ji, and Yuehong Su. "Optical evaluation of a novel static incorporated compound parabolic concentrator with photovoltaic/thermal system and preliminary experiment." Energy Conversion and Management 85 (September 2014): 204–11. http://dx.doi.org/10.1016/j.enconman.2014.05.082.

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20

Jaaz, Ahed, Husam Hasan, Kamaruzzaman Sopian, Abdul Kadhum, Tayser Gaaz, and Ahmed Al-Amiery. "Outdoor Performance Analysis of a Photovoltaic Thermal (PVT) Collector with Jet Impingement and Compound Parabolic Concentrator (CPC)." Materials 10, no. 8 (August 1, 2017): 888. http://dx.doi.org/10.3390/ma10080888.

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21

Hedayatizadeh, Mahdi, Yahya Ajabshirchi, Faramarz Sarhaddi, Ali Safavinejad, Said Farahat, and Hossein Chaji. "Thermal and Electrical Assessment of an Integrated Solar Photovoltaic Thermal (PV/T) Water Collector Equipped with a Compound Parabolic Concentrator (CPC)." International Journal of Green Energy 10, no. 5 (May 28, 2013): 494–522. http://dx.doi.org/10.1080/15435075.2012.678524.

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22

Tripathi, Rohit, and G. N. Tiwari. "Energetic and exergetic analysis of N partially covered photovoltaic thermal-compound parabolic concentrator (PVT-CPC) collectors connected in series." Solar Energy 137 (November 2016): 441–51. http://dx.doi.org/10.1016/j.solener.2016.08.048.

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23

Singh, Amit K., Praveen K. Srivastava, Akhoury S. K. Sinha, and Gopal N. Tiwari. "An estimation of bio-methane generation from photovoltaic thermal compound parabolic concentrator (PVT-CPC) integrated fixed dome biogas digester." Biosystems Engineering 227 (March 2023): 68–81. http://dx.doi.org/10.1016/j.biosystemseng.2023.01.017.

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24

Li, Guiqiang, Gang Pei, Jie Ji, and Yuehong Su. "Outdoor overall performance of a novel air-gap-lens-walled compound parabolic concentrator (ALCPC) incorporated with photovoltaic/thermal system." Applied Energy 144 (April 2015): 214–23. http://dx.doi.org/10.1016/j.apenergy.2015.01.112.

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25

Dharamveer, Samsher, and Anil Kumar. "Performance analysis of N identical PVT-CPC collectors with an active single slope solar distiller and helically coiled heat exchanger using CuO nanoparticles." Water Supply 22, no. 2 (October 12, 2021): 1306–26. http://dx.doi.org/10.2166/ws.2021.348.

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Abstract This paper presents performance analyses based on temperatures, thermal energy (overall), thermal exergy (overall), electrical exergy, and yield of the systems that have been investigated. In the present study, an analytical expression of N identical partly covered photovoltaic compound parabolic concentrator collectors connected in series (N-PVT-CPC-SS-HE) with an active single slope solar distiller unit and helically coiled heat exchanger has been found. The performance analyses of the proposed system have been executed for 0.25% concentration of CuO nanoparticles for collectors (N = 4), and fluid-flow rate 0.02 kg/s in 280 kg mass of basin fluid. The system's performance is compared with a previous system of N identical partly covered photovoltaic flat plate collectors connected in series (N-PVT-FPC-DS-HE) with an active double slope solar distiller unit and helically coiled heat exchanger. The thermal energy is 112,109.1 kWh, thermal exergy 312.07 kWh, and yield 3,615.05 kg annually. It is found that daily enhancement in thermal energy of the proposed system with CuO nanoparticles compared with the previous system with various nanofluids CuO, Al2O3, TiO2, and water is found to be 16.75%, 51.13%, 61.82%, and 80.67% more significant correspondingly. The enhancement in yield of the proposed system is obtained for CuO nanoparticles greater than the previous system with CuO by 11.19%, Al2O3 17.2%, TiO2 26.25%, and water 32.17%. The electrical exergy is almost the same as the previous system.

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26

Saini, Vineet, Rohit Tripathi, G. N. Tiwari, and I. M. Al-Helal. "Electrical and thermal energy assessment of series connected N partially covered photovoltaic thermal (PVT)-compound parabolic concentrator (CPC) collector for different solar cell materials." Applied Thermal Engineering 128 (January 2018): 1611–23. http://dx.doi.org/10.1016/j.applthermaleng.2017.09.119.

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27

Arora, Swati, Harendra Pal Singh, Lovedeep Sahota, Manoj K. Arora, Ritik Arya, Sparsh Singh, Aayush Jain, and Arvind Singh. "Performance and cost analysis of photovoltaic thermal (PVT)-compound parabolic concentrator (CPC) collector integrated solar still using CNT-water based nanofluids." Desalination 495 (December 2020): 114595. http://dx.doi.org/10.1016/j.desal.2020.114595.

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28

Tiwari, Abhishek, Shruti Aggarwal, and Sourabh Anand. "Comparative study of compound parabolic concentrator - photovoltaic thermal – thermoelectric generator (CPC-PVT-TEG) collector integrated with vapour absorption refrigeration (VAR) system." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 45, no. 4 (August 14, 2023): 10277–303. http://dx.doi.org/10.1080/15567036.2023.2239742.

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29

Zhang, Longzhou, Dengwei Jing, Liang Zhao, Jinjia Wei, and Liejin Guo. "Concentrating PV/T Hybrid System for Simultaneous Electricity and Usable Heat Generation: A Review." International Journal of Photoenergy 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/869753.

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Анотація:

Photovoltaic (PV) power generation is one of the attractive choices for efficient utilization of solar energy. Considering that the efficiency and cost of PV cells cannot be significantly improved in near future, a relatively cheap concentrator to replace part of the expensive solar cells could be used. The photovoltaic thermal hybrid system (PV/T), combining active cooling with thermal electricity and providing both electricity and usable heat, can enhance the total efficiency of the system with reduced cell area. The effect of nonuniform light distribution and the heat dissipation on the performance of concentrating PV/T was discussed. Total utilization of solar light by spectral beam splitting technology was also introduced. In the last part, we proposed an integrated compound parabolic collector (CPC) plate with low precision solar tracking, ensuring effective collection of solar light with a significantly lowered cost. With the combination of beam splitting of solar spectrum, use of film solar cell, and active liquid cooling, efficient and full spectrum conversion of solar light to electricity and heat, in a low cost way, might be realized. The paper may offer a general guide to those who are interested in the development of low cost concentrating PV/T hybrid system.

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30

Dharamveer, Dharamveer, Samsher Samsher, and Anil Kumar. "Analytical study of photovoltaic thermal compound parabolic concentrator active double slope solar distiller with a helical coiled heat exchanger using CuO nanoparticles." DESALINATION AND WATER TREATMENT 233 (2021): 30–51. http://dx.doi.org/10.5004/dwt.2021.27526.

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31

Singh, D. B., and G. N. Tiwari. "Performance analysis of basin type solar stills integrated with N identical photovoltaic thermal (PVT) compound parabolic concentrator (CPC) collectors: A comparative study." Solar Energy 142 (January 2017): 144–58. http://dx.doi.org/10.1016/j.solener.2016.11.047.

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32

Li, W., M. C. Paul, H. Baig, J. Siviter, A. Montecucco, T. K. Mallick, and A. R. Knox. "A three-point-based electrical model and its application in a photovoltaic thermal hybrid roof-top system with crossed compound parabolic concentrator." Renewable Energy 130 (January 2019): 400–415. http://dx.doi.org/10.1016/j.renene.2018.06.021.

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33

Joshi, Poonam, and G. N. Tiwari. "Effect of cooling condensing cover on the performance of N-identical photovoltaic thermal-compound parabolic concentrator active solar still: a comparative study." International Journal of Energy and Environmental Engineering 9, no. 4 (June 21, 2018): 473–98. http://dx.doi.org/10.1007/s40095-018-0276-6.

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34

Wan Roshdan, Wan Nur Adilah, Hasila Jarimi, Ali H. A. Al-Waeli, Omar Ramadan, and Kamaruzzaman Sopian. "Performance enhancement of double pass photovoltaic/thermal solar collector using asymmetric compound parabolic concentrator (PV/T-ACPC) for façade application in different climates." Case Studies in Thermal Engineering 34 (June 2022): 101998. http://dx.doi.org/10.1016/j.csite.2022.101998.

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35

Tiwari, G. N., Md Meraj, and M. E. Khan. "Exergy analysis of N-photovoltaic thermal-compound parabolic concentrator (N-PVT-CPC) collector for constant collection temperature for vapor absorption refrigeration (VAR) system." Solar Energy 173 (October 2018): 1032–42. http://dx.doi.org/10.1016/j.solener.2018.08.031.

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36

Zhang, Gaoming, Jinjia Wei, Liang Zhang, Chengsi Xi, Rui Ding, Zexin Wang, and Muhammad Khalid. "A comprehensive study on the effects of truncation positions of the compound parabolic concentrator eliminating multiple reflections on the performances of concentrating photovoltaic and thermal system." Applied Thermal Engineering 183 (January 2021): 116162. http://dx.doi.org/10.1016/j.applthermaleng.2020.116162.

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37

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 (February 21, 2018): 770–83. http://dx.doi.org/10.1177/0958305x18759791.

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Анотація:

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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38

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 (November 30, 2018): 78–82. http://dx.doi.org/10.24018/ejers.2018.3.11.970.

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Анотація:

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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39

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 (November 30, 2018): 78–82. http://dx.doi.org/10.24018/ejeng.2018.3.11.970.

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Анотація:

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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40

Синицын, Сергей, Sergey Sinitsyn, Д. Стребков, D. Strebkov, Владимир Панченко, and Vladimir Panchenko. "Parquetting the Surface of a Parabolic Concentrator of a Solar Photovoltaic Thermal Module According to Given Differential- Geometric Requirements." Geometry & Graphics 7, no. 3 (December 2, 2019): 15–27. http://dx.doi.org/10.12737/article_5dce6084f1ac94.09740392.

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The article discusses the geometric aspects of the design and creation of parabolic-type solar radiation concentrators. Practical methods of geometric design and manufacturing of concentrators of this kind are presented. Parabolic type concentrator is the main part of the solar photovoltaic thermal installation. Its effectiveness depends on the quality factors of the geometric shaping of the working surface, composed of a set of parquet components, linked to each other on the basis of differential geometric requirements. The distribution of illumination in the focal spot of such a concentrator, made by parquet based on the constructive connection of individual elements, makes it possible to obtain acceptable results. However, there is considerable potential for improving performance by providing a smoother and more uniform illumination of the photodetector. To ensure the specified accuracy and smoothness of the rim of the surface at the stages of designing and manufacturing the device, two methods are proposed: orthogonal and fan-shaped geometric parquetting of the surface of a parabolic concentrator with the ability to pre-set the required shape accuracy for given rim geometrical characteristics. Parquetting with given differential requirements for the surface, in turn, provides for two methods for calculating parquet elements: first, by the minimum number of curvilinear elements followed by stitching, taking into account the differential conditions; the second is based on the maximum number of flat elements, the multiplicity of which provides acceptable smooth surface properties. In this paper, we consider the first method for cases of orthogonal and fan parquet. On the example of a parabolic concentrator, the implementation of the considered method is presented, which provides for the possibility of controlling the geometric smoothness of the concentrator surface in order to ensure optimal distribution of concentrated solar radiation in the focal region. The output characteristics of photovoltaic and thermal converters of solar energy, which are in the focus of such a concentrator, become optimal, and the installation itself will operate in nominal mode.

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41

Ortega, A. Balbuena, A. Terán-Franco, J. Carlos Castro, and J. A. del Río. "Optical and thermal performance of a toroidal compound parabolic concentrator." Applied Optics 60, no. 8 (March 5, 2021): 2213. http://dx.doi.org/10.1364/ao.413681.

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42

Bhalla, Vishal, Vikrant Khullar, and Ranga Vihari Parupudi. "Design and thermal analysis of nanofluid-based compound parabolic concentrator." Renewable Energy 185 (February 2022): 348–62. http://dx.doi.org/10.1016/j.renene.2021.12.064.

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43

Tchinda, Réné. "Thermal behaviour of solar air heater with compound parabolic concentrator." Energy Conversion and Management 49, no. 4 (April 2008): 529–40. http://dx.doi.org/10.1016/j.enconman.2007.08.004.

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44

Abdullahi, B., R. K. AL-Dadah, S. Mahmoud, and R. Hood. "Optical and thermal performance of double receiver compound parabolic concentrator." Applied Energy 159 (December 2015): 1–10. http://dx.doi.org/10.1016/j.apenergy.2015.08.063.

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45

Jaaz, Ahed Hameed, Kamaruzzaman Sopian, and Tayser Sumer Gaaz. "Study of the electrical and thermal performances of photovoltaic thermal collector-compound parabolic concentrated." Results in Physics 9 (June 2018): 500–510. http://dx.doi.org/10.1016/j.rinp.2018.03.004.

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46

Bellos, Evangelos, Dimitrios N. Korres, and Christos Tzivanidis. "Investigation of a Compound Parabolic Collector with a Flat Glazing." Sustainability 15, no. 5 (February 28, 2023): 4347. http://dx.doi.org/10.3390/su15054347.

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Анотація:

The compound parabolic concentrator is a promising technology for efficient solar irradiation exploitation at low- and medium-temperature levels. This collector type can be used in a series of applications, such as solar cooling, desalination, and industrial process heat applications. This work presents a novel compound parabolic concentrator that presents satisfying efficiency and low cost due to the use of flat glazing and not an evacuated tube receiver. More specifically, the goal of the present investigation is based on the energy and exergy analysis of a compound parabolic collector with flat glazing, which has a concentration ratio of 2.81. The collector is examined thermally and exegetically, aiming to calculate the efficiency of different operating inlet temperatures. Moreover, the solar unit is studied by a developed computational fluid dynamics model in the SolidWorks Flow Simulation tool. Emphasis is given to the calculation of the convection losses of the receiver tube with the internal air inside the collector. The heat convection coefficient is calculated, and the distribution of the thermal losses, convection, and radiation is presented. Furthermore, the temperature levels of the absorber, the cover glass, and the top thermal loss coefficient are found. The thermal efficiency of the solar unit was 77.4% for inlet temperature at 10 °C and 32.6% for inlet temperature at 110 °C. It was calculated that the maximum exergetic performance of the solar unit is 10.19% for operation at 90 °C, while the thermal efficiency for this case is 41.57%. Additionally, the temperature distributions for different cases are included in the present work.

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47

Prapas, D. E., B. Norton, and S. D. Probert. "Thermal Design of Compound Parabolic Concentrating Solar-Energy Collectors." Journal of Solar Energy Engineering 109, no. 2 (May 1, 1987): 161–68. http://dx.doi.org/10.1115/1.3268194.

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A theoretical analysis of the heat exchanges in a Compound Parabolic Concentrator solar energy collector is presented. The absorber configuration considered is that of a tube (with or without a spectrally-selective surface) either directly exposed or enclosed within one or two glass envelopes. The annular cavity formed between the tube and the surrounding envelope can be either air-filled or evacuated. The optimal annular gap, which leads to the best overall collector efficiency, has been predicted for the nonevacuated arrangement. It was found to be approximately 5 mm for the considered geometry. This is about half that recommended by Rabl and Ratzel and gives a 3 percent better overall collector efficiency than obtained with their design. The evacuation of the annular cavity or the application of a selective surface, separately employed, are demonstrated to yield improvements of the same order. It was necessary, for the particular solar radiation data used, both to evacuate the cavity and apply a selective surface if receiver temperatures exceeding 140°C are required. The comparative performances of different CPC designs have also been considered. The theoretical predictions were compared with experimental results and adequate corroboration was obtained.

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48

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 (February 7, 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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49

A., Rusul F., and Alaa B. H. "Efficiency Evaluation of Solar Concentrator without Tracking System Type of Compound Parabolic Concentrator (CPC)." Ibn AL- Haitham Journal For Pure and Applied Sciences 34, no. 2 (April 20, 2021): 9–22. http://dx.doi.org/10.30526/34.2.2609.

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Анотація:

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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50

Huang, Yuan, Xiaoyu Ma, Changhui Rao, Xincheng Liu, and Rui He. "An annular compound parabolic concentrator used in tower solar thermal power generation system." Solar Energy 188 (August 2019): 1256–63. http://dx.doi.org/10.1016/j.solener.2019.07.032.

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