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Engineering solutions for polymer composites solar water heaters production

  • Energy Conservation, New, and Renewable Energy Sources
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Abstract

Analysis of engineering solutions aimed at a considerable decrease of solar water heaters cost via the use of polymer composites in heaters construction and solar collector and heat storage integration into a single device representing an integrated unit results are considered. Possibilities of creating solar water heaters of only three components and changing welding, soldering, mechanical treatment, and assembly of a complicate construction for large components molding of polymer composites and their gluing are demonstrated. Materials of unit components and engineering solutions for their manufacturing are analyzed with consideration for construction requirements of solar water heaters. Optimal materials are fiber glass and carbon-filled plastics based on hot-cure thermosets, and an optimal molding technology is hot molding. It is necessary to manufacture the absorbing panel as corrugated and to use a special paint as its selective coating. Parameters of the unit have been optimized by calculation. Developed two-dimensional numerical model of the unit demonstrates good agreement with the experiment. Optimal ratio of daily load to receiving surface area of a solar water heater operating on a clear summer day in the midland of Russia is 130‒150 L/m2. Storage tank volume and load schedule have a slight effect on solar water heater output. A thermal insulation layer of 35‒40 mm is sufficient to provide an efficient thermal insulation of the back and side walls. An experimental model layout representing a solar water heater prototype of a prime cost of $70‒90/(m2 receiving surface) has been developed for a manufacturing volume of no less than 5000 pieces per year.

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Authors and Affiliations

  1. Joint Institute for High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/2, Moscow, 125412, Russia

    S. E. Frid

  2. LLC Polythermo, ul. Stantsionnaya 9, Snegiri, Istra raion, Moscow oblast, 143590, Russia

    A. V. Arsatov & M. Yu. Oshchepkov

Authors
  1. S. E. Frid
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  2. A. V. Arsatov
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  3. M. Yu. Oshchepkov
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Correspondence to S. E. Frid.

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Original Russian Text © S.E. Frid, A.V. Arsatov, M.Yu. Oshchepkov, 2016, published in Teploenergetika.

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Frid, S.E., Arsatov, A.V. & Oshchepkov, M.Y. Engineering solutions for polymer composites solar water heaters production. Therm. Eng. 63, 399–403 (2016). https://doi.org/10.1134/S0040601516060021

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  • DOI: https://doi.org/10.1134/S0040601516060021

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