Accession Number : AD0757675

Title :   Tunnel Ventilation and Heat Control in Undersnow Camps-Byrd Station, Antarctica.

Descriptive Note : Final rept. Sep 65-Jun 72,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Hoffman,C. R.

Report Date : FEB 1973

Pagination or Media Count : 50

Abstract : Antarctic stations located in tunnels beneath the snow surface, such as the South Pole Station and the recently closed Byrd Station, are of limited useful life because of snow deformation in the tunnel walls and roof. This deformation accelerates as snow temperature increases, which makes the control of heat gain very important. Studies of temperature control methods in snow tunnels were conducted at Byrd Station from December 1965 to October 1971 and demonstrated that the use of large-diameter gravity ventilation ducts from the tunnel to the surface is an effective method for venting unwanted heat when surface air temperatures are lower than the desired tunnel temperature. When surface air temperatures are too warm, large volumes of supplemental cooling air can be obtained from specially constructed systems utilizing the heat sink represented by the surrounding snowfield. Byrd Station tunnel temperatures are evaluated during use of different ventilating methods. (Author Modified Abstract)

Descriptors :   (*UNDERGROUND STRUCTURES, VENTILATION), (*CONSTRUCTION, *POLAR REGIONS), DEFORMATION, VENTILATION DUCTS, HEAT SINKS, COOLING, HEAT TRANSFER, ATMOSPHERIC TEMPERATURE, EFFICIENCY

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE