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Study of Road Snow Melting Using Exhausted Heat of Vehicle(
1
) - Laboratory Experiments and Their Application Prospects
Technical Paper
2000-01-3484
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
This study aims to develop a device for melting road snow by dropping hot water using exhausted heat of a vehicle, so as to recover the driving force on frozen road, especially at crossings and slopes.
In the laboratory experiments, torque of model tires driving on a mock road of snow-and-ice sheet were measured together with the melting rate of the snow-and-ice, varying tire speed and hot water dropping procedures, and heat balance of this experiment was calculated. As a result, 8ml of hot water of 80 degree Centigrade was required until the tire contacts with the road surface by removing the 10mm thick snow-and-ice sheet. In the actual case, 8ml for the model tire corresponds to 400ml of hot water dropping on a driving tire, and 10mm thickness of snow-and-ice corresponds to that frozen in the coldest night in Sapporo, Japan.
Simulation studies of snow melting by hot water dropping were carried out for 3 representative cities in Japan for 23 winter seasons. Watching a wheel truck of 0.5m widths and 7.5m lengths, hours for which snow-and-ice was cleared (cleared time) were calculated under the condition that the hot water was dropping during the time from 6:00 to 21:00 at a given rate. As a result, it has been shown how much the ratios of the cleared time to non cleared time in a season decrease with increasing the amount of hot water dropping. The ratios increase and saturate with increasing hot water dropping. At no dropping, they have 10% in Nagaoka, 40% in Sapporo and 85% in Sendai at maximum snow year. They are increase and saturate to 72%, 85% and 93% at 12 l/h, respectively. These values which correspond 30 vehicle dropping hot water of 800ml at a crossing and a slop seem increasing a great advance in solving traffic problem in winter city.
Authors
Citation
Suda, M., Umemura, T., and Ueda, Y., "Study of Road Snow Melting Using Exhausted Heat of Vehicle(Also In
References
- Suda Masanori Umemura Teruyoshi Kamimura Seiji A Study of Road Snow Melting using Exhausted Heat of Vehicles -1st Report: Effects of a method of dropping hot water and of tire speed on mock road snow melting- The Society of Automotive Engineers of Japan, Inc. Transaction of Society of Automotive Engineers of Japan 31 2 2000
- Ueda Yasutsugu The snowmelt method of the road using the exhausted heat of automobile engine The Soc. of Automotive Engineers of Japan, Inc. Transaction of Society of Automotive Engineers of Japan 29 3 July 1998
- Umemura Teruyoshi et.al snow processing technology research report-chapter 4: Heat and material balance Snow Assoc. of Japan 44 72