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An experimental study on the thermal efficiency of a passive solar air collector

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This paper presents the results of an experimental investigation on a prototype flat passive solar air collector. The collector consists of an aluminum casing, transparent cover, air inlet and outlet channels and a flat absorber plate mounted inside the casing. The design is unique because the cover is made of transparent cellular polycarbonate sheet, a material whose application to passive solar collectors has not been extensively researched. The cover is 5 mm thick. The airflow through the collector is driven by natural convection. The study was performed on a laboratory set-up consisting of vertically mounted collector, external source of thermal radiation in the form of infrared lamps, measurement equipment and data acquisition system. The tests were performed for a range of irradiance G = 0–540 W/m2 . The following parameters were determined: absorber surface temperature, air temperature increase ∆T , collector heat output and efficiency. Comparing the obtained results to the available data on conventional glass-covered designs has shown that the optical performance of polycarbonate cover is lower. However, in terms of thermal efficiency this is compensated by good insulation. The measurements for the maximum attainable irradiance of Gmax = 540 W/m2 are as follows: the mean air velocity at inlet w = 1.1 m/s, the volumetric flow rate of air V˙ = 30 m3 /h, and the corresponding heat output and thermal efficiency Q = 386 W and η = 36%, respectively.
Rocznik
Strony
251--268
Opis fizyczny
Bibliogr. 32 poz., rys., tab., wykr.
Twórcy
autor
  • Faculty of Mechanical Engineering Koszalin University of Technology Racławicka 15/17, 75-453 Koszalin, Poland
autor
  • Faculty of Mechanical Engineering Koszalin University of Technology Racławicka 15/17, 75-453 Koszalin, Poland
  • Faculty of Mechanical Engineering Koszalin University of Technology Racławicka 15/17, 75-453 Koszalin, Poland
Bibliografia
  • 1. Lewandowski W.M., Pro-ecological, renewable energy sources [in Polish], WNT, Warszawa 2007.
  • 2. PN EN ISO 9488. Solar Energy – Vocabulary.
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  • 4. Fudholi A., Sopian K., Ruslan M.H., Alghoul M.A., Sulaiman M.Y., Review of solar dryers for agricultural and marine products, Renewable and Sustainable Energy Reviews, 14(1): 1–30, 2010.
  • 5. Yusoff W.F.M., Salleh E., Adam N.M., Sapian A., Yusof S. M., Enhancement of stack ventilation in hot and humid climate using a combination of roof solar collector and vertical stack, Building and Environment, 45(10): 2296–2308, 2010.
  • 6. Bouadila S., Kooli S., Lazaar M., Skouri S., Farhat A., Performance of a new solar air heater with packed-bed latent storage energy for nocturnal use, Applied Energy, 110: 267–275, 2013.
  • 7. Gan G., Simulation of buoyancy-induced flow in open cavities for natural ventilation, Energy and Buildings, 38(5): 410–420, 2006.
  • 8. Miyazaki T., Akisawa A., Kashiwagi T., The effects of solar chimneys on thermal load mitigation of office buildings under the Japanese climate, Renewable Energy, 31(7): 987–1010, 2006.
  • 9. Nematollahi O., Alamdari P., Assari M.R., Experimental investigation of a dual purpose solar heating system, Energy Conversion and Management, 78: 359–366, 2014.
  • 10. Benli H., Durmus A., Performance analysis of a latent heat storage system with phase change material for new designed solar collectors in greenhouse heating, Solar Energy, 83(12): 2109–2119, 2009.
  • 11. Benli H., Experimentally derived efficiency and exergy analysis of a new solar air heater having different surface shapes, Renewable Energy, 50: 58–67, 2013.
  • 12. Maneewan S., Khedari J., Zeghmati B., Hirunlabh J., Eakburanawat J., Experimental investigation on generated power of thermoelectric roof solar collector, Proceedings of 22nd International Conference on Thermoelectrics (ICT), pp. 574–577, 2003.
  • 13. Toure S., Characteristic temperatures in a natural convection solar air heater, Energy Conversion and Management, 42(9): 1157–1168, 2001.
  • 14. Operation principles of passive air solar collectors [in Polish, online]. URL: http://flowex.pl/zasada-dzia-ania.html.
  • 15. Zhou Y., Jing G.E., Liu X.H., Li Q.L., Research for ventilation properties of solar chimney with vertical collector, Procedia Environmental Sciences, 11(Part C): 1072–1077, 2011.
  • 16. Arce J., Jimenez M.J., Guzman J.D., Heras M.R., Alvarez G., Xam an J. , Experimental study for natural ventilation on a solar chimney, Renewable Energy, 34(12): 2928–2934, 2009.
  • 17. Chen Z.D., Bandopadhayay P., Halldorsson J., Byrjalsen C., Heiselberg P., Li Y., An experimental investigation of a solar chimney model with uniform wall heat flux, Building and Environment, 38(7): 893–906, 2003.
  • 18. Alvarez G., Arce J., Lira L., Heras L.M.R., Thermal performance of an air solar collector with an absorber plate made of recyclable aluminium cans, Solar Energy, 77(1): 107–113, 2004.
  • 19. Ozgen F., Esen M., Esen H., Experimental investigation of thermal performance of a double-flow solar air heater having aluminium cans, Renewable Energy, 34(11): 2391– 2398, 2009.
  • 20. Esen H., Ozgen F., Esen M., Sengur A., Modelling of a new solar air heater through least-squares support vector machines, Expert Systems with Applications, 36(7): 10673– 10682, 2009.
  • 21. Dutkowski K., Piątkowski P., Experimental investigation of a prototype passive solar air collector with polycarbonate cellular cover [in Polish], Instal, 3(360): 17–22, 2015.
  • 22. Tanaka H., Nakatake Y., Tanaka M., Indoor experiments of the vertical multiple-effect diffusion-type solar still coupled with a heat-pipe solar collector, Desalination, 177(1–3): 291–302, 2005.
  • 23. Bonca Z., Butrymowicz D., Hajduk T., Targański W., New coolants and heat mediums. Thermal and performance properties [in Polish], IPPU MASTA, Gdańsk 2004.
  • 24. Karim M.A., Hawlader M.N.A., Development of solar air collectors for drying applications, Energy Conversion and Management, 45(3): 329–344, 2004.
  • 25. Karim M.A., Hawlader M.N.A., Performance evaluation of a v-groove solar air collector for drying applications, Applied Thermal Engineering, 26(1): 121–130, 2006.
  • 26. Ryan D., Burek S.A.M., Experimental study of the influence of collector height on the steady state performance of a passive solar air heater, Solar Energy, 84(9): 1676–1684, 2010.
  • 27. Zhai X.Q., Dai Y.J., Wang R.Z., Experimental investigation on air heating and natural ventilation of a solar air collector, Energy and Buildings, 37(4): 373–381, 2005.
  • 28. El-Sawi A.M., Wifi A.S., Younan M.Y., Elsayed E.A., Basily B.B., Application of folded sheet metal in flat bed solar air collectors, Applied Thermal Engineering, 30(8–9): 864–871, 2010.
  • 29. Duffie J.A., Beckman W.A., Solar engineering of thermal processes, 4th ed., Wiley, 2013.
  • 30. Peng D., Zhang X., Dong H., Lv K., Performance study of a novel solar air collector, Applied Thermal Engineering, 30(16): 2594–2601, 2010.
  • 31. Gill R.S., Singh S., Singh P.P., Low cost solar air heater, Energy Conversion and Management, 57: 131–142, 2012.
  • 32. Ramani B M., Gupta A., Kumar R., Performance of a double pass solar air collector, Solar Energy, 84(11): 1929–1937, 2010.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-f6bfecaa-a8e8-4855-b185-5b451c97ad6c
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