Estimation Method of Cooling Load in an Underground Station

Abstract

This paper presents the estimation method of the cooling load in a platform of an underground station where various heat load factors exist, such as train wind, infiltration from upper floors, heat generation from the cooling system of cars, train brake systems, lighting and passengers on platforms. For appropriate load estimation, each factor is examined using results of measurement and Computational Fluid Dynamics (hereafter CFD). In the CFD simulation, trains are modeled asmoving bodies to simulate train wind. The improved formula for each factor is proposed in this paper and the obtained cooling load shows good agreement with the real load.