Thermal conditions test and analysis of an unheated underground garage in Beijing in winter

Aimed at the argument over whether underground garages need heating in cold areas, tests the thermal conditions of the garage in typical winter weather conditions. The results show that the air temperatures in most spots of the garage are higher than 0 ℃, the air temperature near the entrance or the exit is lower than 0 ℃, but the surface temperatures of fire hydrant and water pipe for fire fighting are still higher than 0 ℃. Analyses the energy-saving benefit of the measure without heating in the underground garage. Considers that the scheme that the underground garages do not be equipped with heating systems is acceptable in cold regions, on the condition that the suitable measures against freezing are taken to the fire fighting system, and it will produce significant benefits of energy-saving, environment and economy.