Scholarlink

Abstract <p>An improved design of a solar air heater with an air-permeable matrix absorber made of tangled metal wire is developed as a utility model. A thermal model is proposed for this design of a matrix solar air heater with allowance for its geometric, thermophysical, optical, and operating parameters. To simplify the problem, it is assumed that the air-permeable matrix absorber made of tangled metal wire is a porous material with a thickness δ, a porosity of the absorber <i>p</i>, and a constant thermal conductivity coefficient of the solid skeleton <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({{{{\lambda }}}_{{\text{c}}}}.\)</EquationSource> <!--AppSolEn2360223Rashidov-m1--> </InlineEquation> Based on the adopted thermal model, a method is developed for determining the thermal efficiency coefficient <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(F{\kern 1pt} '\)</EquationSource> <!--AppSolEn2360223Rashidov-m2--> </InlineEquation> of the solar air heater and its total heat loss coefficient <i>U</i><sub>L</sub>. An example calculation for the developed improved design of a solar air heater with an air-permeable matrix absorber made of tangled metal wire is provided. It demonstrates in steps the method and source for determining the coefficients included in the dependencies for calculating the efficiency coefficient <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(F{\kern 1pt} '\)</EquationSource> <!--AppSolEn2360223Rashidov-m3--> </InlineEquation> and the total heat loss coefficient <i>U</i><sub>L</sub>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Methodology for Determining the Efficiency of a Solar Air Heater with an Air-Permeable Matrix Absorber Made of Tangled Metal Wire

  • 期刊论文

  • 发表日期：

    2025年8月1日

查看全文
  • Y. K. Rashidov,
  • J. T. Orzimatov,
  • Sh. Y. Sultanova

摘要

Abstract

An improved design of a solar air heater with an air-permeable matrix absorber made of tangled metal wire is developed as a utility model. A thermal model is proposed for this design of a matrix solar air heater with allowance for its geometric, thermophysical, optical, and operating parameters. To simplify the problem, it is assumed that the air-permeable matrix absorber made of tangled metal wire is a porous material with a thickness δ, a porosity of the absorber p, and a constant thermal conductivity coefficient of the solid skeleton \({{{{\lambda }}}_{{\text{c}}}}.\) Based on the adopted thermal model, a method is developed for determining the thermal efficiency coefficient \(F{\kern 1pt} '\) of the solar air heater and its total heat loss coefficient UL. An example calculation for the developed improved design of a solar air heater with an air-permeable matrix absorber made of tangled metal wire is provided. It demonstrates in steps the method and source for determining the coefficients included in the dependencies for calculating the efficiency coefficient \(F{\kern 1pt} '\) and the total heat loss coefficient UL.