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Mathematical modelling of heat transfer properties for perforated ceramic blocks.

Number: 799

Author(s) : CERTOKS S., GENDELIS S., JAKOVICS A., et al.

Summary

There exist many methods for estimation of heat transfer properties for building materials. It is impossible to replace the experimental methods for determination of heat conductivity for basic materials. Experiments carried out show that heat conductivity of each particular material is dependent on different factors and could not be easily calculated. One of the possible alternatives to measurements is the use of mathematical modelling in case when heat conductivity of base materials is experimentally measured and building structure is combined of such materials or in case when only geometry of already known material domains (such sizes, proportions etc.) is changed. The main advantage of this method is low cost, since no experimental equipment is needed, as well as ability to virtually modify the structure for maximizing its energy efficiency. Possibility to handle geometrically complex materials when no explicit analytical approach is applicable is also advantage of mathematical modelling approach. This research is developed to reveal dependences of heat conductivity of ceramic building materials from clay mineralogical composition, porosity, structure of geometrical cavities and influence of different heat transfer mechanisms for ceramic building materials with different macroscopic air domains and different filling materials. There exist many methods for estimation of heat transfer properties for building materials. It is impossible to replace the experimental methods for determination of heat conductivity for basic materials. Experiments carried out show that heat conductivity of each particular material is dependent on different factors and could not be easily calculated. One of the possible alternatives to measurements is the use of mathematical modelling in case when heat conductivity of base materials is experimentally measured and building structure is combined of such materials or in case when only geometry of already known material domains (such sizes, proportions etc.) is changed. The main advantage of this method is low cost, since no experimental equipment is needed, as well as ability to virtually modify the structure for maximizing its energy efficiency. Possibility to handle geometrically complex materials when no explicit analytical approach is applicable is also advantage of mathematical modelling approach. This research is developed to reveal dependences of heat conductivity of ceramic building materials from clay mineralogical composition, porosity, structure of geometrical cavities and influence of different heat transfer mechanisms for ceramic building materials with different macroscopic air domains and different filling materials.

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Pages: 10 p.

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Details

  • Original title: Mathematical modelling of heat transfer properties for perforated ceramic blocks.
  • Record ID : 30009941
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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