Numerical Thermal Analysis of Applying Insulation Material to Holes in Hollow Brick Walls by the Finite-Volume Method

A numerical study by self-programming three-dimensional software which can efficiently deal with complicated heat transfer is conducted to investigate the effect on the thermal performance of pasting 10 mm insulation around holes in external walls constructed from 240 × 115 × 90 mm hollow bricks. A comprehensive parametric investigation includes varying the arrangement of holes, insulation, or building materials. The results show that adopting this method can markedly reduce the equivalent thermal conductivity by between 20.3 and 61.1%, and choosing higher-thermal resistance mortar or hollow brick material achieves better insulation performance whereas the optimum configuration of hollow bricks is barely affected.

[1]  V. Costa.  Improving the thermal performance of red clay holed bricks , 2014 .

[2]  P. J. García Nieto,et al.  Non-linear thermal analysis of the efficiency of light concrete multi-holed bricks with large recesses by FEM , 2012, Appl. Math. Comput..

[3]  P. J. García Nieto,et al.  Nonlinear thermal optimization of external light concrete multi-holed brick walls by the finite element method , 2008 .

[4]  W. Tao,et al.  A New Stability-Guaranteed Second-Order Difference Scheme , 2002 .

[5]  M. Juárez,et al.  Study of the geometry of a voided clay brick using non-rectangular perforations to optimise its thermal properties , 2011, Energy and Buildings.

[6]  S. Patankar.  Numerical Heat Transfer and Fluid Flow , 2018, Lecture Notes in Mechanical Engineering.

[7]  M. P. Morales,et al.  Possibilities for improving the equivalent thermal transmittance of single-leaf walls for buildings , 2014 .

[8]  He Yongning,et al.  Optimization of the configuration of 290 140 90 hollow clay bricks with 3-D numerical simulation by finite volume method , 2008 .

[9]  Liang Fang,et al.  Numerical simulation of concrete hollow bricks by the finite volume method , 2009 .

[10]  Ahmed Mezrhab,et al.  Computation of combined natural-convection and radiation heat-transfer in a cavity having a square body at its center , 2006 .

[11]  P. J. García Nieto,et al.  Analysis and optimization of the heat-insulating light concrete hollow brick walls design by the finite element method , 2007 .

[12]  Lei Li,et al.  Numerical thermal optimization of the configuration of multi-holed clay bricks used for constructing building walls by the finite volume method , 2008 .

[13]  D. Gray,et al.  The validity of the boussinesq approximation for liquids and gases , 1976 .

[14]  P. J. García Nieto,et al.  Non-linear thermal optimization and design improvement of a new internal light concrete multi-holed brick walls by FEM , 2008 .

[15]  P. Lettieri,et al.  An introduction to heat transfer , 2007 .

[16]  Majed M. Alhazmy.  Analysis of coupled natural convection–conduction effects on the heat transport through hollow building blocks , 2006 .

[17]  Javier Domínguez-Hernández,et al.  The use of response surface methodology to improve the thermal transmittance of lightweight concrete hollow bricks by FEM , 2014 .

[18]  Majed M. Alhazmy.  Numerical investigation on using inclined partitions to reduce natural convection inside the cavities of hollow bricks , 2010 .

[19]  Ö. Altan Dombaycı,et al.  Optimization of insulation thickness for external walls using different energy-sources , 2004 .

[20]  P. J. García Nieto,et al.  Non-linear thermal analysis of light concrete hollow brick walls by the finite element method and experimental validation , 2006 .

[21]  Miroslaw Zukowski,et al.  Experimental and numerical investigation of a hollow brick filled with perlite insulation , 2010 .

[22]  Liwei Tian,et al.  A study on optimum insulation thicknesses of external walls in hot summer and cold winter zone of China , 2009 .

[23]  Derya Burcu Özkan,et al.  Optimization of insulation thickness for different glazing areas in buildings for various climatic regions in Turkey , 2011 .

[24]  Paolo Principi,et al.  Thermal analysis of the application of pcm and low emissivity coating in hollow bricks , 2012 .

[25]  Mohamed A. Antar,et al.  Conjugate conduction-natural convection heat transfer in a hollow building block , 2009 .

[26]  W. Q. Tao,et al.  An Efficient Segregated Algorithm for Incompressible Fluid Flow and Heat Transfer Problems-IDEAL ( Inner Doubly Iterative Efficient Algorithm for Linked Equations ) Part I : Mathematical Formulation and Solution Procedure , 2008 .