온수 배관방식 도로융설 시스템의 포장에 따른 표면 온도변화에 관한 연구
Study on Surface Temperature Variation of Several Pavement with Snow Melting System Using Hot Water Piping Kim Jin-Ho† Junior Professor, Department of Fire Protection, Safety
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초록
Snow melting system in road is a device which prevents being frozen for safety. If the snow melting system with piping is used, the economical benefit is growed and the geothermal unbalance for years is able to be solved, also. Because the snow melting system with piping is different with the electric snow melting system in design aspects, it requires additional considerations such as kinds of pipe, heat medium and flowrate etc. In this paper, for predicting the heat dissipation to air side of the snow melting system of piping, CFD simulation are performed. And the variation of road surface temperature along time for thickness and kinds of the pavement is investigated. Flowrate of heat medium is not big effect on heat dissipation in same diameter of pipe. As the diameter is increased from 25A to 32A, the amount of heat dissipation is increased from 149 to 215 W/m2. If the pipe spacing is increased or reduced by 16.7 % based on 150 mm, the amount of dissipation is increased or decreased by 20% or 18%. It can be seen that the top layer pavement largely affects on the time when the road surface temperature reaches 0°C.
Abstract
Snow melting system in road is a device which prevents being frozen for safety. If the snow melting system with piping is used, the economical benefit is growed and the geothermal unbalance for years is able to be solved, also. Because the snow melting system with piping is different with the electric snow melting system in design aspects, it requires additional considerations such as kinds of pipe, heat medium and flowrate etc. In this paper, for predicting the heat dissipation to air side of the snow melting system of piping, CFD simulation are performed. And the variation of road surface temperature along time for thickness and kinds of the pavement is investigated. Flowrate of heat medium is not big effect on heat dissipation in same diameter of pipe. As the diameter is increased from 25A to 32A, the amount of heat dissipation is increased from 149 to 215 W/m2. If the pipe spacing is increased or reduced by 16.7 % based on 150 mm, the amount of dissipation is increased or decreased by 20% or 18%. It can be seen that the top layer pavement largely affects on the time when the road surface temperature reaches 0°C.
참고문헌 (7)
- Kim, J. H., "Design Example in Road Snow Melting System using Hot Water in Pipe", Monthly Sulbee Technology, pp.83~91 (2018), Hanmi
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- Hwang, K. -I., "An Experimental Study on the Thermal Performance Change of Horizontal-Type Geothermal Heat Exchanger with Long-Term Operation", Proceedings of the SAREK '06 Summer Conference, pp.725~730 (2006)
- Miyamoto, S., "Snow-Melting and De-Icing System on Road Using Natural Thermal Energy Sources", Proceedings of the 11th International Winter Road Congress (2002)
- Miyamoto, S., "Snow-Melting System Using Underground Thermal Energy Collected by Foundation Piles (in Japaness)", Annual Meeting, Geothermal Research Society of Japan, Abstracts with Programs, 2001, pp.137~ (2001)
- Miyamoto, S., "Design and Construction of Snow-Melting System Using Underground Thermal Energy Collected by Bridge Piles (in Japaness)", Region Technology, 14, pp.437~440 (2002)
- A Study on the Criteria of Design and Construction for Snow Melting System, "Choi, J. K.", Housing Research Institute, Korea National Housing Corporation, ~ (1996)