A Thermal Model for the Evaluation of Subway Ventilation and Air Conditioning

A thermal model of an existing subway station and 1/2 mi of adjacent tunnels are described. The model, developed to evaluate a number of car-cooling and air-conditioning concepts for improved passenger comfort, was programmed for a digital computer to account for transient effects due to train and passenger flow, out-door temperature, humidity conditions, and heat storage in tunnel walls and surrounding soil.