北海道に於ける Road Heating について
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概要
- 論文の詳細を見る
The development of the first practical electric snow melting installation in Hokkaido has succeeded sufficiently in the Sapporo city in winter 1963-1964. After this success many road heating systems were installed in every place. About 1700 m<SUP>2</SUP> (480 kw) electrically heated roads in Hokkaido at the end of 1964 will have increased to 6000 m<SUP>2</SUP> (1500 kw) by 1965.<BR>Summary of generally used electric road heating installation is : <BR>1) Heating cable is a 7/0. 5 <I>m</I>/<I>m</I> Ni-Cu alloy wire, butyl rubber insulated and P.V.C. sheathed.<BR>2) Cable is embedded 3-5 cm depth with 5-7 cm spacing.<BR>3) Watt-density is about 250 watt per square meter.<BR>4) Energy supply is 500-600 hour per season.<BR>The paper gives details of above experience in Sapporo, analysis and theory of road heating system, heating cables and some inotallations in the foreign country.<BR>It is also suggested that there is scope for futher research in this field, including the problems of watt-density damage of road surface, autmatic control and energy supply.
- 社団法人 日本雪氷学会の論文