Academic literature on the topic 'SOLAR FLAT PLATE COLLECTORS'

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Journal articles on the topic "SOLAR FLAT PLATE COLLECTORS"

1

Noghrehabadi, Aminreza, Ebrahim Hajidavaloo, Mojtaba Moravej, and Ali Esmailinasab. "An experimental study of the thermal performance of the square and rhombic solar collectors." Thermal Science 22, no. 1 Part B (2018): 487–94. http://dx.doi.org/10.2298/tsci151228252n.

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Solar collectors are the key part of solar water heating systems. The most widely produced solar collectors are flat plate solar collectors. In the present study, two types of flat plate collectors, namely square and rhombic collectors are experi?mentally tested and compared and the thermal performance of both collectors is investigated. The results show both collectors have the same performance around noon (?61%), but the rhombic collector has better performance in the morning and afternoon. The values for rhombic and square collectors are approximately 56.2% and 53.5% in the morning and 56.1% and 54% in the afternoon, respectively. The effect of flow rate is also studied. The thermal efficiency of rhombic and square flat plate collectors increases in proportion to the flow rate. The results indicated the rhombic collector had better performance in comparison with the square collector with respect to the mass-flow rate.
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2

Han, Xiao Dong, Shi Wei Zhang, Chuan Chen, and Yong Tang. "Analysis of Selective Absorber Coatings on Thermal Performance of the Solar Flat-Plate Collector." Advanced Materials Research 690-693 (May 2013): 2093–97. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.2093.

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In this work, a solar flat-plate collector test system is developed. The solar flat-plate collectors with anodic coating, chromium coating and blue core coating are tested. The experimental results indicate that the relative absorption ration α/ε of blue core coating is up to 19. The efficiency of collector with blue core coating is 78.66%, which is 5% higher than collectors with the other two types of coatings. In addition, collector with blue core coating has smaller total thermal loss coefficient. The blue core coating can effectively improve the performance of solar flat-plate collectors.
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3

Amirgaliyev, Yedilkhan, Murat Kunelbayev, Talgat Ormanov, Talgat Sundetov, and Salauat Daulbayev. "Experimental comparative analysis of operating characteristics of double circuit flat-plate solar collector with thermosiphon circulation and flat solar collector with chemical coating." Thermal Science, no. 00 (2021): 173. http://dx.doi.org/10.2298/tsci201108173a.

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The given article considers results of experimental measurements, productivity comparison and master controller executive system of flat-plate solar collector with thermosiphon circulation and flat solar collector with special chemical coating. There has been developed master controllers control module, which receives data from temperature and lighting sensors, obtained in operation process. The aim of the research is getting the solar collectors? optimal parameters, representing maximal usage performance index, controllability, as well as, construction type, allowing energy saving. In the recent years flat-plate solar collectors with chemical coating are characterized with higher efficiency in real conditions usage. The developed master controllers? executive system is used for monitoring the installation?s main parameters, as well, it permits to compare characteristics of solar collector with thermosiphon circulation to those of flat-plate solar collector with chemical coating. The obtained experimental data has shown, that flat solar collectors, using chemical coating as a transfer medium in solar heat supply system, have an advantage in the context of usage effectiveness. The heat output and water heating in a flat solar collector are calculated, which vary depending on the intensity of solar radiation. The thermal efficiency of a flat solar collector with a thermosiphon tank based on the Mojo V3 platform using Dallas sensors is calculated.
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4

Olczak, Piotr, Dominika Matuszewska, and Jadwiga Zabagło. "The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study." Energies 13, no. 7 (2020): 1829. http://dx.doi.org/10.3390/en13071829.

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In Poland, various solar collector systems are used; among them, the most popular are flat plate collectors (FPCs) and evacuated tube collectors (ETCs). The work presents two installations located at a distance of 80 km apart, working in similar external conditions. One of them contains 120 flat plate collectors and works for the preparation of hot water in a swimming pool building; the second one consists of 32 evacuated tube collectors with a heat pipe and supports the preparation of domestic hot water for a multi-family house. During the comparison of the two quite large solar installations, it was confirmed that the use of evacuated tube solar collectors shows a much better solar energy productivity than flat plate collectors for the absorber area. Higher heat solar gains (by 7.9%) were also observed in the case of the gross collector area. The advantages of evacuated tube collectors are observed mainly during colder periods, which allows for a steadier thermal energy production.
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5

Marcic, Simon, Rebeka Kovacic-Lukman, and Peter Virtic. "Hybrid system solar collectors - heat pumps for domestic water heating." Thermal Science 23, no. 6 Part A (2019): 3675–85. http://dx.doi.org/10.2298/tsci180314187m.

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This paper deals with the use of solar energy, heat pumps, and solar system-heat pump combinations for domestic water heating. The testing of solar tiles, flat plate collectors as an autonomous system, as well as flat plate collector-heat pump and solar tile-heat pump combinations, are presented. Black-coloured water absorbs solar radiation flows through solar tiles made of transparent polymethyl methacrylate (CH2C(CH3)COOCH3). At the same time, solar tiles are used as a roof covering and as a solar radiation collector. Hot water from solar tiles or a flat plate collector is directed to the heat pump, which increases the temperature of water entering the boiler heating coil. The heat of water heated in solar tiles or in flat plate collectors serves as a source of energy for the heat pump. Since the goal was realistically evaluate the efficiency of solar tiles in comparison with the flat plate collector, extensive measurements of both systems under identical condition were carried out. The experiments were carried out in rainy, cloudy, and clear weather.
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6

Sharma, Chandrakant, and Dr Virendra Sangtani. "Analyses of a Flat Plate Photovoltaic and Thermal Solar Collectors." International Journal of Trend in Scientific Research and Development Volume-3, Issue-3 (2019): 239–42. http://dx.doi.org/10.31142/ijtsrd21707.

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7

Li, Jie. "Review of Materials for Solar Thermal Collectors." Advanced Materials Research 171-172 (December 2010): 486–89. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.486.

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To cover the main contributions and developments in solar thermal collectors through focusing on materials, heat transfer characteristics and manufacturing challenges. A range of published papers and internet research including research work on various solar thermal collectors (flat plate, evacuated tubes, and heat pipe tube) were used. Evaluation of solar collectors performance is critiqued to aid solar technologies make the transition into a specific dominant solar collector. The sources are sorted into sections: finding an academic job, general advice, teaching, research and publishing, tenure and organizations. Provides information about types of solar thermal collectors, indicating what can be added by using evacuated tube collectors instead of flat plate collectors and what can be added by using heat pipe collectors instead of evacuated tubes. Focusing only on three types of solar thermal collectors (flat plate, evacuated tubes, and heat pipe tube). Useful source of information for consultancy and impartial advice for graduate students planning to do research in solar thermal technologies. This paper fulfils identified information about materials and heat transfer properties of materials and manufacturing challenges of these three solar thermal collectors.
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8

Kousar, Rubeena, and Muzaffar Ali. "Annual transient simulations and experimental investigation of a hybrid flat plate and evacuated tube collectors array in subtropical climate." Thermal Science 24, no. 2 Part B (2020): 1435–43. http://dx.doi.org/10.2298/tsci190623421k.

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Non-concentrating solar thermal collectors are being used for various heating and cooling applications. Flat plate collectors and evacuated tube collectors are extensively being used in this regard and their hybrid configuration could be an energy efficient solution. In the current work, model-based transient simulation approach is implemented using TRNSYS to decide the optimal number of flat plate collectors. Detailed experimental analysis of standalone and hybrid configurations of flat plate collectors and evacuated tube collectors is performed under real climate conditions of Taxila, Pakistan. Experimental tests have been conducted to analyze the system performance in terms of energy and exergy efficiencies. Afterwards, annual transient simulations are performed for whole year to determine the overall performance of the hybrid system. The maximum average temperature difference per unit area for flat plate collectors, evacuated tube collectors, and hybrid collector array was found to be 0.95?C, 1.67?C, and 0.98?C, respectively. The maximum energy and exergy efficiency were found 65%, 41% for flat plate collectors, 88.36%, 60 % for evacuated tube collectors, and 62.14%,42% for hybrid collector, while 10% increase in energy efficiency of hybrid collector array is found as compared to the standalone flat plate collectors. Average 9.78% deviation is observed in experimental and model-based efficiency. Finally, annual simulations show that hybrid collector array is 16% more efficient than standalone flat plate collectors throughout the year.
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9

Oyinlola, MA, and GSF Shire. "Characterising micro-channel absorber plates for building integrated solar thermal collectors." Building Services Engineering Research and Technology 40, no. 1 (2018): 13–29. http://dx.doi.org/10.1177/0143624418783173.

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This paper discusses the characterisation of micro-channel absorber plates for compact flat plate solar thermal collectors, which are suitable for building integration. Experimental and computational studies were carried out at typical operating conditions for flat plate solar collectors. Three-dimensional numerical analysis using commercial CFD package, ANSYS CFX, showed that heat transfer occurred on only three surfaces of the channel and there was a peripheral variation of the heat flux density. It was also observed that axial thermal conduction could modify the surface boundary at the inlet and outlet; however, the middle section of the channel could be approximated as a rectangular channel with three walls transferring heat under an H1 boundary condition. Experimental studies were used to estimate the standard parameters for predicting performance of the flat plate collectors, which indicated promising performance results. The collector flow factor F″ and the heat removal factor could be improved by increasing the collector capacitance rate; this can be achieved by increasing the mass flow rate per collector area [Formula: see text] as well as reducing the overall heat loss, UL. This analysis is important for optimising design and operating parameters, especially to minimise temperature gradient in the transverse and longitudinal directions. Practical application: The proposed compact micro-channel absorber plate has the potential to make flat plate collectors more efficient, cheaper and aesthetically attractive in building integration. It could therefore promote the uptake of solar thermal collectors in buildings. The analysis presented in this study would be beneficial for optimising the design and operating parameters of building integrated solar thermal collectors with micro-channels.
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10

He, Yong Tai, Rui Ming Liu, and Jin Hao Liu. "Experimental Research of Photovoltaic/Thermal (PV/T) Solar Systems." Applied Mechanics and Materials 401-403 (September 2013): 146–50. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.146.

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A novel water photovoltaic/thermal (PV/T) solar system was designed, which consisted of a flat plate solar thermal collector and a flat plate PV/T collector in parallel. The area of flat plate solar thermal collector and PV/T collectors were 2m2, respectively. The performance of PV/T solar system was tested under condition of flat plate PV/T collectors with glass cover. The test results show that the average output electricity power of PV/T solar system was 28.1W in sunny day at 8:27-17:00 (March 8,2013, at Chuxiong city), the water temperature in the water tank insulation with 200L was raised from 18°C to 60°C. The daily useful efficiency of the PV/T solar system reached 46%. The PV/T solar system could meet the basic need of ordinary families to lighting electricity and hot water. The PV/T solar system had high practicality and was suitable for ordinary rural families.
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