Measurement and Dynamic Simulation of Underground Parking Garage to Examine the Indoor Air Temperature

This article examines the distribution of the indoor air temperature in a two-level underground parking garage in an administrative building located in a densely populated urban area of Bratislava, Slovakia. To analyze the temperature trends, continuous monitoring of the indoor and outdoor air temperatures was conducted using a mini datalogger from 2^nd October 2023 to 4^th February 2024. Through utilization of the EnergyPlus simulation engine, DesignBuilder software was used for dynamic simulation of the underground parking garage. The zonal model of the parking garage was calibrated using the actual indoor air temperature data measured. The heat gain from an average car in the first hour was approximately 1750 W during an exponential decline. Six simulations with different mechanical ventilation operating states were performed. The simulation results indicate that the average air temperatures in the zones were highest in a hygienic ventilation (HYG) simulation in a parking garage with gates. The lowest air temperatures were recorded in a maximum ventilation (MAX) simulation with holes instead of gates.