SYSTEM AND METHOD FOR MONITORING AND PURGING ATMOSPHERE IN A CONFINED SPACE

A purge system for a box trailer used for overland cargo transport includes there being an exhaust vent at a front end of the trailer, and one or more fresh air vents at the rear end of the trailer. Fresh air or conditioned air is introduced into the trailer through the fresh air vents, and the interior air is exhausted through the exhaust vent. An exhaust fan at the exhaust vent is controlled by a control module, which receives information from various sensors regarding conditions inside the trailer, and initiates the purge operation in response to one or more of the monitored parameters meeting or exceeding an established threshold.