Skip to main content
SpringerLink
Log in

Daily Variations of Water Temperature and Useful Heat Accumulation in Flat-Plate Solar Water-Heating Collectors with Capacitive Solar Radiation Absorbers with Bottom Absorption of Radiation

  • SOLAR UNITS AND THEIR APPLICATION
  • Published:
Applied Solar Energy Aims and scope Submit manuscript

Abstract—

This study presents the results of numerical experiments conducted for determining the daily variations of water temperature and useful heat in flat-plate solar water-heating collectors (FSWHCs), with capacitive solar radiation absorbers (SRAs) with bottom absorption of radiation. These absorbers are made as rectangular containers 5–7 cm in thickness from translucent plastics.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.

Similar content being viewed by others

REFERENCES

  1. Kasimov, F.Sh., Samiev, K.A., Akhatov, Zh.S., and Babaev, S.S., Mathematical modeling of the operating mode of a flat solar collector with a capacious heat sink, Vestn. Tashkent. Univ. Inf. Tekhnol. (TUIT), 2009, no. 1, pp. 66–70.

  2. Nauchno-prikladnoi spravochnik po klimatu SSSR. Seriya 3. Mnogoletnie dannye (Scientific and Applied Reference Book on the Climate of the USSR. Series 3: Long-Term Data), Leningrad: Gidrometeoizdat, 1989, parts 1–6, iss. 19, book 1.

  3. Avezov, R.R. and Kasimov, F.Sh., Summary heat losses of trough solar water heating collectors with exposed evaporation surface, Appl. Sol. Energy, 2009, vol. 45, no. 2, pp. 135–137.

    Article  Google Scholar 

  4. Avezov, R.R. and Avezova, N.R., Dynamics of heat accumulation and solar energy conversion efficiency in plane solar collectors with large-capacity heat absorbers: Calculation procedures, Geliotekhnika, 1997, no. 3, pp. 69–77.

  5. Avezova, N.R. and Kasimov, F.Sh., Solar radiation absorptance in tray solar water heating collectors with exposed evaporation surface, Appl. Sol. Energy, 2009, vol. 45, no. 4, pp. 233–236.

    Article  Google Scholar 

  6. Otanicar, T.P., Phelan, P.E., and Golden, J.S., Optical properties of liquids for direct absorption solar thermal energy systems, Sol. Energy, 2009, vol. 83, no. 7, pp. 969–977.

    Article  Google Scholar 

  7. Drotning, W.D., Optical properties of solar absorbing oxide particles suspended in a molten salt heat transfer fluid, Sol. Energy, 1978, vol. 20, no. 4, pp. 313–319.

    Article  Google Scholar 

  8. Isachenko, V.P., Osipova, V.A., and Sukhomel, A.S., Teploperedacha (Heat Transfer), Moscow: Energiya, 1975.

    Google Scholar 

  9. Avezov, R.R. and Orlov, A.Yu., Solnechnye sistemy otopleniya i goryachego vodosnabzheniya (Solar Systems of Heating and Hot-Water Supply), Tashkent: Fan, 1988.

  10. Avezova, N.R., Avezov, R.R., Ruziev, O.S., et al., Resource indices of flat solar water-heating collectors in hot-water-supply systems. Part 2: Source data for calculations (external factors), Appl. Sol. Energy, 2013, vol. 49, no. 2, pp. 73–82.

    Article  Google Scholar 

  11. Twidell, J.W. and Weir, A.D., Renewable Energy Sources, London: E. & F.N. Spon, 1986.

    Google Scholar 

  12. Avezov, R.R., Kasimov, F.Sh., Niyazov, Sh.K., et al., Thermal efficiency of flat water heating solar cells with bottom absorption of solar radiation, in Materialy Mezhdunarodnoi konferentsii, posvyashchennoi 70-letiyu Fiziko-tekhnicheskogo instituta NPO “Fizika-Solntse” (Proc. Int. Conf. Dedicated to the 70th Anniversary of the Physical-Technical Insitute of SPA “Physics-Sun”), Tashkent, 2013, pp. 14–15.

Download references

ACKNOWLEDGMENTS

We are grateful to N.R. Avezova, Doctor of Engineering, for methodological assistance in conducting the numerical calculations and processing the results.

Funding

The study was carried out as part of state programs of the Ministry of Innovative Development of the Republic of Uzbekistan under basic research project BV-M-F3-003 of the International Solar Energy Institute and applied research project AS-Atech-2018 (420+85) of the Physical-Technical Institute, Uzbekistan Academy of Sciences.

Author information

Authors and Affiliations

  1. Physical–Technical Institute, Scientific Production Association Physics–Sun, Academy of Sciences of the Republic of Uzbekistan, 100084, Tashkent, Uzbekistan

    R. R. Avezov & F. Sh. Kasimov

  2. Gulistan State University, 120100, Gulistan, Uzbekistan

    Sh. K. Niyazov

Authors
  1. R. R. Avezov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. F. Sh. Kasimov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Sh. K. Niyazov
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to F. Sh. Kasimov.

Additional information

Translated by S. Kuznetsov

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Avezov, R.R., Kasimov, F.S. & Niyazov, S.K. Daily Variations of Water Temperature and Useful Heat Accumulation in Flat-Plate Solar Water-Heating Collectors with Capacitive Solar Radiation Absorbers with Bottom Absorption of Radiation. Appl. Sol. Energy 56, 242–247 (2020). https://doi.org/10.3103/S0003701X20040052

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S0003701X20040052

Keywords:

Search

Navigation