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OPTIMUM HEAT INSULATOR FOR ADIABATIC ICICLE PREVENTION ON EXISTING TUNNEL IN CONSIDERING STATISTICAL ATMOSPHERIC CONDITIONS.

Author(s) : OKADA K.

Type of article: Article

Summary

IN JAPAN, FROST HARMS RAILWAY TUNNELS. UNTIL NOW, RAILWAY EMPLOYEES HAVE BEEN HIRED TO REMOVE THE ICE LAYER AND ICICLES AT NIGHT. IT WAS DECIDED TO END THESE WORKING CONDITIONS TO AVOID ACCIDENTS, AND TO ADOPTPREVENTIVE MEASURES, BY INSULATING THE TUNNELS. THE ARTICLE DEALS WITH CALCULATION OF THE INSULANT THICKNESS AND WITH OPTIMIZATION USING STATISTIS PARAMETERS TAKEN INTO ACCOUNT ARE AS FOLLOWS: TEMPERATURE VARIATIONS IN THE TUNNEL, THEMATERIAL THERMAL CONDUCTION AND THE COATING CHARACTERISTICS.

Details

  • Original title: OPTIMUM HEAT INSULATOR FOR ADIABATIC ICICLE PREVENTION ON EXISTING TUNNEL IN CONSIDERING STATISTICAL ATMOSPHERIC CONDITIONS.
  • Record ID : 1990-2124
  • Languages: English
  • Source: Q. Rep. RTRI - vol. 30 - n. 1
  • Publication date: 1989/02
  • Document available for consultation in the library of the IIR headquarters only.

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