ENERGY STUDY OF UNDERGROUND RAPID TRANSIT

Underground rapid transit systems can generate enough heat from their operations to raise tunnel and station temperatures as much as 15 or 20 deg above outdoor temperatures. The purpose of this study was to develop a preliminary analytical model for evaluating these energy transfers. Results obtained for the simplified thermal model of an underground rapid transit system permit drawing three major conclusions: The proper design of the ventilating and air conditioning system for this transit mode will require a detailed energy budget study; thermal modeling of the underground system must be true to the physical conditions imposed; and tunnel air temperature is a complex function of all the factors influencing the energy transfer mechanisms in the tunnel.

• Corporate Authors:

  International Society for Terrain-Vehicle Systems

  Box 4824, Duke Station
  Durham, NC  United States  27706
• Authors:
  • Chaddock, J B
  • Sud, I
• Publication Date: 1972-9

Media Info

• Pagination: p. 391-407
• Serial:
  • High Speed Ground Transportation Journal
  • Volume: 6
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Air conditioning systems; Energy transfer; Environmental quality; Rapid transit; Subways; Temperature measurement; Tunnels; Ventilation systems
• Old TRIS Terms: Subway environment
• Subject Areas: Bridges and other structures; Energy; Environment; Operations and Traffic Management; Passenger Transportation; Railroads;

Filing Info

• Accession Number: 00043920
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 1 1973 12:00AM