Method and system for testing K value of air conditioner duct of railway vehicle and computer equipment

The invention relates to a rail vehicle air conditioner air duct K value testing method and system and computer equipment, and the method comprises the steps: adjusting the internal and external environments of a first air duct and a second air duct, and adjusting the internal and external environments of the first air duct and the second air duct to a thermal stable state; the first air duct internal temperature, the first air duct external temperature, the first air duct heating total power, the second air duct internal temperature, the second air duct external temperature and the second air duct heating total power are recorded multiple times at intervals of preset time; and according to the first air duct internal temperature, the first air duct external temperature, the first air duct heating total power, the second air duct internal temperature, the second air duct external temperature and the second air duct heating total power, the comprehensive heat transfer coefficient of the railway vehicle air con