Hydronic Heating Pavement with Low Temperature: The Effect of Pre-heating and Fluid Temperature on Anti-icing Performance
A renewable method to mitigate the slippery condition on road surfaces is to use Hydronic Heating Pavement (HHP) system. The HHP system starts heating the road when the surface temperature is below both of the dew-point and the water freezing temperatures. Furthermore, in order to improve the anti-icing performance of the HHP system, it is necessary to pre-heat the road surface. The aims of this study are to evaluate the effects of: (i) pre-heating the road surface and (ii) varying the fluid temperature, when the road is pre-heated, on the anti-icing performance of the HHP system. The road surface was pre-heated by adding a temperature threshold (from 0 to 1.6 °C) to the freezing and dew-point temperatures. A two-dimensional numerical simulation model was developed using finite element method in order to calculate the annual required energy and remaining hours of the slippery conditions on the road surface. The numerical solver was validated by an analytical solution associated with an infinite region bounded internally by a pipe with a constant temperature. In order to evaluate the anti-icing performance of the HHP system, the climate data were selected from Östersund, an area in middle of Sweden with cold and long winter period. The results showed that running the HHP system by considering the temperature threshold of 0.1 °C for both freezing and dew-point temperatures led to approximately 110 h shorter slippery conditions on the road surface, compared to the conditions without pre-heating.
KeywordsHydronic heating pavement Anti-icing Pre-heating Fluid temperature Required energy Slippery condition
The work was supported by the Norwegian Public Road Administration and Chalmers University of Technology.
- 1.H. Norem, Selection of strategies for winter maintenance of roads based on climatic parameters. J. Cold Reg. Eng. 23, 113–135 (2009). https://doi.org/10.1061/(ASCE)0887-381X(2009)23:4(113)CrossRefGoogle Scholar
- 3.F. Knudsen, K. Natanaelsson, A. Arvidsson, O. Kärki, Á. Jacobsen, G. Guðmundsson, B. Nonstad, K.M. Reitan, Vintertjeneste i de Nordiske land. Statusrapport 2014 (in Norwegian), Norge, 2014Google Scholar
- 4.T. Liu, N. Wang, H. Yu, J. Basara, Y. (Eric) Hong, S. Bukkapatnam, Black Ice Detection and Road Closure Control System for Oklahoma, (2014) 74. http://www.okladot.state.ok.us/research/FinalRep_2249_FHWA-OK-14-08.pdf
- 5.W.J. Eugster, Road and bridge heating using geothermal energy. Overview and Examples, in: Proceedings on European Geothermal Congress, Unterhaching, Germany 30 May-1 June, 2007Google Scholar
- 6.D. Pahud, Simulation tool for the system design of bridge heatig for ice prevention with solar heat stored in a seasonal ground duct store (User Manual, Lugano, Switzerland, 2008)Google Scholar
- 7.M. Abbasi, Non-skid winter road, investigation of deicing system by considering different road profiles (Chalmers University of Technology, Gothenburg, Sweden, 2013)Google Scholar
- 8.C.-E. Hagentoft, Introduction to building physics, 1:7 (Studentlitteratur, Lund, Sweden, 2001)Google Scholar
- 10.Meteotest, Meteonorm: meteonorm, global meteorological database. Handbook part II: Theory, version 6.1, Bern, Switzerland, 2010Google Scholar
- 11.R. Mirzanamadi, Thesis for the degree of licentiate of engineering ice free roads using hydronic heating pavement with low temperature (Chalmers University of Technology, Gothenburg, Sweden, 2017)Google Scholar