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Thermal Losses of a Three-Layer Underground Cylindrical Heat Accumulator of Solar Installations

  • SOLAR PLANTS AND THEIR APPLICATION
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Abstract

To study the heat losses of a three-layer underground cylindrical heat accumulator (HA), a method for numerically solving the problem of calculating a non-stationary temperature field in the layers of such a system under a symmetrical boundary, has been developed, implemented in the form of a program. Studies of thermal losses of an underground cylindrical HA are carried out. It has been confirmed that no additional thermal insulation is required for the daily underground HA. Creation of a heat-insulating layer in underground HA allows us to increase the period of heat storage up to 10 days with heat loss less than 30%. It is shown that the use of elementary time steps different in time in the calculation makes it possible to reduce the time for calculating heat losses and temperatures in the HA layers by 30 times, up to 1 min, counting per 2000 h of storage. For known temperatures of heat supply and removal in HA according to the pipe-in-pipe scheme, the method and program can be used to study the thermal efficiency of the underground HA, taking into account heat losses in the process of charging and discharging the HA.

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REFERENCES

  1. Underground heat accumulators of solar energy. Banksolar. http://www.gigavat.com/index.php.

  2. Eskilson, P., Thermal analysis of heat extraction bore-holes, Doctoral Thesis, Lund, Sweden: Lund University, 1987.

  3. Yavuzturk, C., Spitler, J.D., and Rees, S.J., A transient two-dimensional finite volume model for the simulation of vertical U-tube ground heat exchangers, ASHRAE Trans., 1999, vol. 105, no. 2, pp. 465–474.

    Google Scholar 

  4. Kim, E.-J., Roux, J-J., Rusaouen, G., and Kuznik, F., Numerical modelling of geothermal vertical heat exchangers for the short time analysis using the state model size reduction technique, Appl. Therm. Eng., 2010, vol. 30, nos. 6–7, pp. 706–714.

    Article  Google Scholar 

  5. Lari, A., Concentrated heat storage for solar heating, Energy Procedia, 2012, vol. 30, pp. 305–309.

    Article  Google Scholar 

  6. Poppi, S. and Bales, C., Influence of hydraulics and control of thermal storage in solar assisted heat pump combisystems, Energy Procedia, 2014, vol. 48, pp. 946–955.

    Article  Google Scholar 

  7. Bär, K., Rühaak, W., Welsch, B., Schulte, D., Homuth, S., and Sass, I., Seasonal high temperature heat storage with medium deep borehole heat exchangers, Energy Procedia, 2015, vol. 76, pp. 351–360.

    Article  Google Scholar 

  8. Tanzer, B. and Schweigler, C., Façade-integrated massive solar-thermal collectors combined with long-term underground heat storage for space heating, Energy Procedia, 2016, vol. 91, pp. 505–516.

    Article  Google Scholar 

  9. Xiaodong Guo, Haiwen Shu, JinGao, Fei Xu, Chen Cheng, Zeyuan Sun, and Dongbin Xu, Volume design of the heat storage tank of solar assisted water-source heat pump space heating system, Procedia Eng., 2017, vol. 205, pp. 2691–2697.

    Article  Google Scholar 

  10. Stutz, B., Le Pierres, N., Kuznik, F., Johannes, K., Palomo Del Barrio, E., Bédécarrats, J.-P., Gibout, S., Marty, P., Zalewski, L., Soto, J., Mazet, N., Olives, R., Bezian, J.-J., and Pham Minh, D., Storage of thermal solar energy, C. R. Phys., 2017, vol. 18, pp. 401–414.

    Article  Google Scholar 

  11. Zhiwei Ma, Huashan Bao, and Anthony Paul Roskilly, Feasibility study of seasonal solar thermal energy storage in domestic dwellings in the UK, Sol. Energy, 2018, vol. 162, pp. 489–499.

    Article  Google Scholar 

  12. Allison, J., Bell, K., Clarke, J., Cowie, A., Elsayed, A., Flett, G., Oluleye, G., Hawkes, A., Hawker, G., Kelly, N., Marinho de Castro, M.M., Sharpe, T., Shea, A., Strachan, P., and Tuohy, P., Assessing domestic heat storage requirements for energy flexibility over varying timescales, Appl. Therm. Eng., 2018, vol. 136, pp. 602–616.

    Article  Google Scholar 

  13. Suhil Kiwan and Qusai R. Soud, Numerical investigation of sand-basalt heat storage system for beam-down solar concentrators, Case Studies Therm. Eng., 2019, vol. 13, id. 100372.

  14. Abrell, J., Rausch, S., and Streitberger, C., Buffering Volatility: Storage Investments and Technology-Specific Renewable Energy Support, Energy Economics, 2019, vol. 84, suppl. 1, id. 104463. https://doi.org/10.1016/j.eneco.2019.07.023

  15. Korotkikh, A.G., Teploprovodnost’ materialov: uchebnoe posobie (Thermal Conductivity of Materials: Handbook), Tomsk: Izd. Tomsk. Politekh. Univ., 2011.

  16. Klychev, Sh.I., Bakhramov, S.A., Kenzhaev, I.G., Kharchenko, V.V., and Bagyshev, A.S., Convective and radiative heat losses of a cylindrical accumulator for solar water heating collectors, Appl. Sol. Energy, 2021, vol. 57, no. 2, pp. 143–147.

    Article  Google Scholar 

  17. Mikheev, M.A. and Mikheeva, I.M., Osnovy teploperedachi (Fundamentals of Heat Transfer), Moscow: Energiya, 1973.

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ACKNOWLEDGMENTS

The study was carried out according to the plans of budgetary scientific research of the Scientific and Technical Center with a Design Bureau and Pilot Production, Academy of Sciences of the Republic of Uzbekistan.

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Authors and Affiliations

  1. Scientific and Technical Center with a Design Bureau and Pilot Production, Academy of Sciences of the Republic of Uzbekistan, 100125, Tashkent, Uzbekistan

    Sh. I. Klychev, S. A. Bakhramov & D. E. Kadyrgulov

  2. Osh State University, 714000, Osh, Kyrgyzstan

    I. G. Kenzhaev & A. S. Bagyshev

Authors
  1. Sh. I. Klychev
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  2. I. G. Kenzhaev
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  3. A. S. Bagyshev
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  4. S. A. Bakhramov
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  5. D. E. Kadyrgulov
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Correspondence to Sh. I. Klychev.

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Translated by N. Petrov

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Klychev, S.I., Kenzhaev, I.G., Bagyshev, A.S. et al. Thermal Losses of a Three-Layer Underground Cylindrical Heat Accumulator of Solar Installations. Appl. Sol. Energy 57, 523–527 (2021). https://doi.org/10.3103/S0003701X21060116

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  • DOI: https://doi.org/10.3103/S0003701X21060116

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