Thermal Analysis of Wall/Floor Intersections in Building Envelope

  • Ihm, Pyeongchan (Joint Center for Energy Management, CEAE Department CB 428, University of Colorado)
  • Published : 2004.06.01


Wall/floor intersection is important parts of a building envelope system. These intersections can be sources of thermal bridging effects and/or moisture condensation problems. This paper provides a detailed analysis of the thermal performance of wall/floor intersection. In particular, two-dimensional steady-state and transient solutions of the heat conduction within the wall/floor joint are presented. Various insulation configurations are considered to determine the magnitude of heat transfer increase due to wall/floor joint construction.



  1. Carslaw, H. S. and Jaeger, J. C., 1959, Conduction of Heat in Solids, Clarendon Press, Oxford
  2. Langmuir, E. Q., Adams and Mekle, G. S., 1973, Flow of Heat Through Furnace Walls: The Shape Factors, pp. 55-84
  3. Letherman, K. M. and Sarkis, B. L., 1984, Building Environment, Vol. 19, p.101
  4. Mathews, E. H., 1986, Building Environment,. Vol. 21, p.183
  5. Mao, G. and Johannesson, G., 1997, Dynam-ic calculation of thermal bridges, Energy and Building, Vol. 26, pp.233-240
  6. Kim, K. S., Lee, D. B., Lee, J. H. and Park, H. S., 2004, A study on evaluation of in-sulation and condensation performance in comers of building envelope, Journal of the Architectural Institute of Korea Planning and Design, Vol. 16, No.4. pp.163-168
  7. Al-Sanea, S. A., 2003, Finite-volume thermal analysis of building roofs under two-dimen-sional periodic conditions, Building and En-vironment, Vol. 38, pp. 1039-1049
  8. Fukuyo, K., 2003, Heat flow visulization for thermal bridge problems, International Jour-nal of Refrigeration, Vol. 26, pp.614-617
  9. Pantankar, S., 1980, Numerical Heat Trans-fer and Fluid flow, New York, McGraw-Hill
  10. SIAM, 1993, LAPACK User's guide V2.0, Philadelphia, Pennsylvania
  11. Krarti, M., 1989, Steady-state heat transfer beneath partially insulated slab-on-grade floor, International Journal of Heat and Mass Transfer, Vol. 32 (5), pp.961-969