Building Simulation

, Volume 4, Issue 1, pp 41–48 | Cite as

Model validation of a dynamic embedded water base surface heat emitting system for buildings

  • Sébastien Thomas
  • Pierre-Yves Franck
  • Philippe André
Research Article / Indoor/Outdoor Airflow and Air Quality


A numerical model is developed to assess the static and dynamic operations of a new kind of floor heat emitter. Surface floor heating systems are widely used to achieve better comfort conditions in residential and tertiary building sector. Classical floor heating systems have a low thermal response while the emitting device studied in this paper is highly reactive. It allows comfort enhancement and energy savings. A finite element method based software COMSOL Multiphysics is applied to solve the heat equation. This work focuses on the thermal behaviour of the emitter itself, but does not include a building model. A test bench has been built for this application to verify the numerical model. Both computational and experimental results demonstrate the benefits of this new heating and cooling device.


heated floor experimental validation COMSOL Multiphysics 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. CEN (2005). 15377-1 (draft) — Heating systems in buildings — Design of embedded water based surface heating and cooling systems — Part 1: Determination of the design heating and cooling capacity. European Committee for Standardization, CEN, Europe.Google Scholar
  2. COMSOL (2010). COMSOL Multiphysics 4.0a Multiphysics Modeling and Engineering Simulation Software. Licensed to University of Liège, COMSOL AB, Stockholm, Sweden.Google Scholar
  3. EPCOS (2009). NTC thermistors for temperature measurement. Series B57703M. Available online at: Accessed 20 Dec. 2010.
  4. Fonseca Diaz N, Lebrun J, André P (2010). Experimental study and modeling of cooling ceiling systems using steady-state analysis. International Journal of Refrigeration, 33: 793–805.CrossRefGoogle Scholar
  5. Franck P-Y (2010). How does the OPAL-Systems solution function? Available online at: Accessed 23 Nov. 2010.
  6. Karlsson H (2010). Embedded Water-based Surface Heating Part 1: Hybrid 3D numerical Model. Journal of Building Physics, 33: 357–391.CrossRefGoogle Scholar
  7. Liébard A, De Herde A (2006). Traité d’architecture et d’urbanisme bioclimatiques. Editions du Moniteur. (in French)Google Scholar
  8. Measurement Specialities (2008). 10K3A1 Series 1 Thermistor. Available online at: Accessed 20 Dec. 2010.
  9. Rohsenow WM, Hartnett JP (1973). Handbook of Heat Transfer. New York: McGraw-Hill.Google Scholar
  10. Thomas S, Franck P-Y, André P (2009). Optimization of dynamic embedded, water based surface heat (and cold) emitting system for buildings. Paper presented at the COMSOL Conference 2009, Milan, Italy.Google Scholar
  11. Thür A (2010). Monitoring program of small-scale solar heating and cooling systems within IEA-SHC Task 38 — Procedure and first results. In: Proceedings of the ISES IEA-SHC Eurosun 2010 Conference, Graz, Austria.Google Scholar
  12. TRNSYS (2010). TRNSYS simulation studio, Version 17.00.0016. Licensed to University of Liège, Solar Energy Laboratory, Madison, USA.Google Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Sébastien Thomas
    • 1
  • Pierre-Yves Franck
    • 1
  • Philippe André
    • 1
  1. 1.Department of Sciences and Environmental ManagementUniversity of Liège6700Belgium

Personalised recommendations