Development of road snow melting technology using ground water as a heat source ConfNumazawa, Kiichi ; Goto, Nobuaki
Language: English Language: French Series: ; topic IV-94Publication details: XIth international winter road congress 2002. Sapporo [Japan] / XIe congres international de la viabilite hivernale 2002, Sapporo [Japon]. Paper, 2002Description: 8 sSubject(s): Bibl.nr: VTI 2002.0071Location: Abstract: The weather in winter Japan is distinguished from others, because of much snowfall with not so cold temperature. And more than 20 per cent of Japanese live in such snowy area, which occupies about 60 per cent of the country of Japan. Therefore, snow removal and snow control on roads have been essential since early times in Japan. Road snow melting systems using ground water had been developed and put to a practical use in Japan. Snow melting system with sprinkling ground water from nozzles to clear snow on roads was developed in 1961 and became popular in the snowy area of Japan. It, however, wasted much ground water without recovery and it sometimes causes troubles such as lack of ground water and land subsidence. Snow melting system without sprinkling ground water was developed in 1980 in order to prevent land subsidence and to maintain ground water as a precious resource. This system utilizes only heat energy of ground water and recharges used ground water into the aquifer again without sprinkling. It is popular in the snowy area of Japan recently. It can be said that this system is relatively an energy saving system, because it utilizes unused energy effectively. However, some ideas of energy saving described hereafter, to reduce a load on global environment are developed and tried, reflecting having wasted much energy previously without forecasting such environmental disruption as global warming in these days.Current library | Call number | Status | Date due | Barcode | |
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Statens väg- och transportforskningsinstitut | Available |
The weather in winter Japan is distinguished from others, because of much snowfall with not so cold temperature. And more than 20 per cent of Japanese live in such snowy area, which occupies about 60 per cent of the country of Japan. Therefore, snow removal and snow control on roads have been essential since early times in Japan. Road snow melting systems using ground water had been developed and put to a practical use in Japan. Snow melting system with sprinkling ground water from nozzles to clear snow on roads was developed in 1961 and became popular in the snowy area of Japan. It, however, wasted much ground water without recovery and it sometimes causes troubles such as lack of ground water and land subsidence. Snow melting system without sprinkling ground water was developed in 1980 in order to prevent land subsidence and to maintain ground water as a precious resource. This system utilizes only heat energy of ground water and recharges used ground water into the aquifer again without sprinkling. It is popular in the snowy area of Japan recently. It can be said that this system is relatively an energy saving system, because it utilizes unused energy effectively. However, some ideas of energy saving described hereafter, to reduce a load on global environment are developed and tried, reflecting having wasted much energy previously without forecasting such environmental disruption as global warming in these days.