Mitigating Underestimation in Infiltration Cooling Load in Metro Stations: A Simulation Method for Determination

Accurate and rational estimation of cooling loads is crucial for the energy-efficient design of ventilation and air-conditioning systems in metro stations, contributing significantly to the low-carbon development of metro systems. This study conducted a comparative analysis between the cooling load estimates from design drawings and the actual measurements obtained on-site. The results revealed a significant underestimation, ranging from 81.0% to 87.5%, of the cooling load attributed to air infiltration through entrances during the design phase. To address this misestimation, a simulation method is proposed, utilizing a combined application of STESS software and Fluent software. The findings demonstrate that employing this simulation method can effectively mitigate the misestimation, reducing it to a range of 8.3% to 50.2%.