Underground railway environment in the UK Part 2: Investigation of heat load

Underground railway systems can generate enough heat from their operations to raise tunnel and station temperatures substantially. This may result in passenger discomfort in warm weather conditions if the underground railway environment is not cooled. This part of the paper investigates the heat loa...

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Bibliographic Details
Published in:Applied thermal engineering 2004-04, Vol.24 (5), p.633-645
Main Authors: Ampofo, F, Maidment, G, Missenden, J
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat load
Heating, air conditioning and ventilation
Modelling
PMV
PPD
Railway
Technical data: comfort, insulation, loads, etc
Temperature
Train
Tunnel
Underground
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Description
Summary:Underground railway systems can generate enough heat from their operations to raise tunnel and station temperatures substantially. This may result in passenger discomfort in warm weather conditions if the underground railway environment is not cooled. This part of the paper investigates the heat load in a generic underground railway network using a purposely-developed mathematical model. A theoretical analysis has shown that the major contributor of heat to the tunnel is from the braking mechanism and that for the train carriage is from the passengers. The model has shown that additional cooling to the existing rolling stock may be provided by cooling the tunnels within which they operate.
ISSN:1359-4311
DOI:10.1016/j.applthermaleng.2003.10.018