Abstract
It is important to predict temperatures in tunnels accurately in order to find a way for reducing power consumption by ventilation fans placed in tunnels or by air conditioners placed in underground train stations. RTRI has been developing a method of simulating the thermal environment in tunnels. To improve the simulation accuracy, modeling of the heat transfer by the groundwater flowing in the surrounding earth of the tunnel and that of heat generation in the tunnel has been modified. We found the difference between the results of the simulation and the field test becomes smaller in consequence of the improvement of the model.
