Abstract: A dehumidification apparatus suitable for collecting gas of an exterior and excluding moisture from the gas is provided. The dehumidification apparatus includes an intake tube, a throat tube, an exhaust tube, and a communication device. The intake tube has a first end portion and a second end portion opposite to each other, wherein the cross-section of the intake tube is convergent from the first end portion to the second end portion. The throat tube is connected to the second end portion. The exhaust tube is connected to the throat tube, wherein the throat tube is located between the second end portion and the exhaust tube, and the cross-section of the throat tube is less than the cross-section of the exhaust tube. The communication device is connected between the intake tube and the exhaust tube. A dehumidification method is also provided.

Abstract: An air conditioning apparatus includes a casing having an inlet and an outlet, an airflow import device, a nozzle, two valves disposed at two ends of the nozzle, a vacuum pump connected through the nozzle, a connecting device, a heater, a humidifier, and an airflow export device. The airflow import and export devices are disposed at positions near the inlet and the outlet inside the casing. The nozzle includes an intake portion, a throat, and an exhaust portion connected sequentially and coaxially. A cross-sectional area of the intake portion decreases gradually from one end away from the throat to the other end close to the throat. A cross-sectional area of the throat is smaller than that of the exhaust portion. The connecting device is connected to the intake portion and the exhaust portion. The heater and the humidifier are disposed between the nozzle and the outlet.