How does the outside air temperature affect the temperature of underground parking lots? Are they as hot or less hot during the winter?
CO is deadly; air must be recycled very quickly. All else being equal, it seems like ventilation would bring the facility to outside ambient temperature quickly.
http://www.mobilecalibrationservices.com/Ventilation_for_enc...
"For enclosed parking facilities, ANSI/ ASHRAE Standard 62-1989, Ventilation for Acceptable Indoor Air Quality specifies a fixed ventilation rate of below 7.62 L/s·m2 (1.5 cfm/ft2) of gross floor area.2 Therefore, a ventilation flow of about 11.25 air changes per hour is required for garages with 2.5 m (8 ft) ceiling height. However, some of the model code authorities specify an air change rate of four to six air changes per hour. ..."