A Simulation Tool for the Hydronic Bridge Snow Melting System
نویسندگان
چکیده
The design of hydronic heating systems for bridge snow melting requires assessment of longterm performance under expected future weather conditions, especially when geothermal energy is used as the heat source. This is important to be able to predict the snow melting performance, analyze the economics, and investigate the effects of controls and design parameters on the system performance. A simulation tool for modeling hydronic bridge snow melting systems using ground source heat pumps (GSHP) or other heat sources has been developed to facilitate the design. In this paper, a numerical model of the hydronically-heated bridge deck and the experimental validation results of the model predictions are described. In addition, the structure and features of the simulation tool are presented. As an application of the simulation tool, the ASHRAE guidance for required surface heat fluxes for snow melting is evaluated with a simulation-based parametric study.
منابع مشابه
Simulation Based Investigation on the Design of Hydronic Snow Melting System
Hydronic heating systems that circulate a heated fluid through pipes embedded in a bridge deck or roadway may be used to eliminate or reduce dangerous driving conditions caused by snow and ice. The first important task in sizing such a system is determining the required heat flux. Current guidance in the ASHRAE HVAC Applications Handbook for required surface heat fluxes is based on a one-dimens...
متن کاملModeling snow melting on heated pavement surfaces. Part I: Model development
Hydronic or electric heating of pavement surfaces has been used in the prevention of ice formation and snow deposition with the aim of improving transportation safety. This paper describes a numerical model of a heated pavement and the snow melting processes occurring on its surface. A set of boundary conditions have been defined, and models of heat and mass transfer developed, that allow treat...
متن کاملModeling snow melting on heated pavement surfaces. Part II: Experimental validation
This paper describes an experimental validation exercise for a newly developed numerical model of the snow melting process on heated pavement surfaces. The model is able to predict the conditions of the snow, ice and water during the snow melting process on hydronically-heated pavements given time-varying weather and heating system boundary conditions. Validation results show that the model sat...
متن کاملشبیه سازی سطح پوشش برف و رواناب ناشی از ذوب آن در حوزه آبخیز هرو - دهنو در استان لرستان
Given the importance of snow, it seems necessary to predict its resultant runoff for optimized usage. In addition, due to snowbound regions cloudiness in winter season, the notice of snow cover area (SCA) using satellite images is difficult. Hence, to help better water resources managing in mountainous areas using supplementary methods for simulating the SCA is necessary. As a case study, Horo-...
متن کاملSimulation of a Geothermal Bridge Deck Anti-icing System and Experimental Validation
The design of heated bridge deck anti-icing systems requires assessment of long-term performance under expected future weather conditions. A method of simulating the performance of such a system has been developed. The system studied in this work uses a bridge deck with embedded hydronic tubing and a ground-coupled heat pump system with vertical borehole heat exchangers as a heat source. The mo...
متن کامل