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A Numerical Analysis For Geometrical Compatibility Of Cylindrical Evacuated Tubes

Year 2023, Volume: 15 Issue: 3, 92 - 97, 31.12.2023
https://doi.org/10.29137/umagd.1320446

Abstract

In this study , the optical efficiency of evacuated solar collector systems has been numerically investigated through ZEMAX optical design program . The factors that affected the optical efficiency of the collector system; the position of reflective surface, the position of absorber plate is taken as a variables, the collector system are defined the optimal operating conditions for a possible tracking system and without a tracking system. It was determined that the average radiation collected at the position where the center of the absorber surface is closest to the rear dimensions of the outer glass tube – 15.5 mm, was determined to be maximum, 2.15% larger than the 15.5 indicator of the outer glass absorber width. The optimum angle of incidence is in the range of 48 – 51  for each position of the absorber surface.

References

  • L.M. Ayompe, A. Duffy, M. Mc Keever, M. Conlon, S.J. McCormack,Comparative field performance study of flat plate and heat pipe evacuated tube collectors (ETCs) for domestic water heating systems in a temperate climate,Energy,36-5,2011, 3370-3378, https://doi.org/10.1016/j.energy.2011.03.034.
  • Runsheng Tang, Wenfeng Gao, Yamei Yu, Hua Chen,Optimal tilt-angles of all-glass evacuated tube solar collectors,Energy, 34-9,2009,1387-1395, https://doi.org/10.1016/j.energy.2009.06.014.
  • Runsheng Tang, Yuqin Yang, Wenfeng Gao,Comparative studies on thermal performance of water-in-glass evacuated tube solar water heaters with different collector tilt-angles,Solar Energy,85- 7,2011,1381-1389, https://doi.org/10.1016/j.solener.2011.03.019.
  • BUDIHARDJO, I.; MORRISON, G. L.; BEHNIA, M. Development of TRNSYS models for predicting the performance of water-in-glass evacuated tube solar water heaters in Australia. In: Proceedings of ANSZES Annual Conference. 2003.
  • Yong Kim, Taebeom Seo,Thermal performances comparisons of the glass evacuated tube solar collectors with shapes of absorber tube,Renewable Energy,32 -5,2007,772-795, https://doi.org/10.1016/j.renene.2006.03.016.
  • I. Budihardjo, G.L. Morrison,Performance of water-in-glass evacuated tube solar water heaters,Solar Energy,
  • 83- 1, 2009,49-56, https://doi.org/10.1016/j.solener.2008.06.010.

Vakumlanmış Silindirik Güneş Kollektör Tüplerinde Geometrik Uyumluluğun Sayısal Analizi

Year 2023, Volume: 15 Issue: 3, 92 - 97, 31.12.2023
https://doi.org/10.29137/umagd.1320446

Abstract

Bu çalışmada , silindirik geometriye sahip ve vakumlanmış güneş kollektör sistemlerinin optik verimleri ZEMAX optik tasarım programı aracılığıyla sayısal olarak incelenmiştir. Kollektör sistemlerinin verimlerine etki eden faktörlerden ; dış cam, toplayıcı tüp, yansıtıcı yüzeyin birbirlerine göre konumları değişken olarak alınmış olup , kollektör sisteminin olası bir takip sistemiyle ve takip sistemi olmaksızın en iyi çalışma şartları belirlenmiştir. Yutucu yüzey merkezinin dış cam borunun arka yüzeyine en yakın olduğu – 15.5 mm konumunda toplanan ortalama ışınımın maksimum olduğu belirlenmiş, dış cam yutucu mesafesinin 15.5 konumuna göre % 2. 15 daha büyük olduğu belirlenmiştir. Optimum geliş açısının yutucu yüzeyin her konumu için 48 – 51  aralığında olduğu görülmüştür.Yansıtıcılı modellerde yansıtıcı dış cam mesafesinin azalmasıyla toplanan ışınımın yaklaşık % 5 arttığı görüşlmüş ve tüm yansıtıcı konumlarında optimum geliş açısının 15 – 18  aralığında olduğu görülmüştür.

References

  • L.M. Ayompe, A. Duffy, M. Mc Keever, M. Conlon, S.J. McCormack,Comparative field performance study of flat plate and heat pipe evacuated tube collectors (ETCs) for domestic water heating systems in a temperate climate,Energy,36-5,2011, 3370-3378, https://doi.org/10.1016/j.energy.2011.03.034.
  • Runsheng Tang, Wenfeng Gao, Yamei Yu, Hua Chen,Optimal tilt-angles of all-glass evacuated tube solar collectors,Energy, 34-9,2009,1387-1395, https://doi.org/10.1016/j.energy.2009.06.014.
  • Runsheng Tang, Yuqin Yang, Wenfeng Gao,Comparative studies on thermal performance of water-in-glass evacuated tube solar water heaters with different collector tilt-angles,Solar Energy,85- 7,2011,1381-1389, https://doi.org/10.1016/j.solener.2011.03.019.
  • BUDIHARDJO, I.; MORRISON, G. L.; BEHNIA, M. Development of TRNSYS models for predicting the performance of water-in-glass evacuated tube solar water heaters in Australia. In: Proceedings of ANSZES Annual Conference. 2003.
  • Yong Kim, Taebeom Seo,Thermal performances comparisons of the glass evacuated tube solar collectors with shapes of absorber tube,Renewable Energy,32 -5,2007,772-795, https://doi.org/10.1016/j.renene.2006.03.016.
  • I. Budihardjo, G.L. Morrison,Performance of water-in-glass evacuated tube solar water heaters,Solar Energy,
  • 83- 1, 2009,49-56, https://doi.org/10.1016/j.solener.2008.06.010.
There are 7 citations in total.

Details

Primary Language Turkish
Subjects Energy Generation, Conversion and Storage (Excl. Chemical and Electrical)
Journal Section Articles
Authors

Ömer Resuloğlu 0000-0003-3415-9506

Publication Date December 31, 2023
Submission Date June 27, 2023
Published in Issue Year 2023 Volume: 15 Issue: 3

Cite

APA Resuloğlu, Ö. (2023). Vakumlanmış Silindirik Güneş Kollektör Tüplerinde Geometrik Uyumluluğun Sayısal Analizi. International Journal of Engineering Research and Development, 15(3), 92-97. https://doi.org/10.29137/umagd.1320446

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