Dual hose portable air conditioners work by utilizing two separate hoses for intake and exhaust. The intake hose pulls in air from the outside, while the exhaust hose expels hot air generated by the cooling process. Although both hoses draw air with the same initial temperature, the cooling effect is achieved through the air conditioning unit's internal mechanisms.
Here's a step-by-step explanation of how dual hose portable air conditioners cool the air:
Intake of Outside Air: One hose is dedicated to drawing air from outside the room or space being cooled. This outside air typically has the same initial temperature as the room.
Compression and Cooling: Inside the air conditioner, the intake air is compressed using a compressor. Compression raises the air pressure and causes the temperature to rise as well. As a result, the air becomes hotter than the initial temperature.
Heat Exchange: The hot, compressed air is then directed through a heat exchanger or condenser. The condenser transfers the heat from the compressed air to the outside environment through the exhaust hose. This process cools the air inside the unit, preparing it for further cooling.
Expansion and Evaporation: After the heat exchange, the air is expanded through an expansion valve or an evaporator. Expansion causes a drop in pressure, which leads to a decrease in temperature. As a result, the air becomes cooler than the initial temperature.
Cooling the Room: The cooled air is then circulated back into the room through a separate hose. It helps to lower the overall temperature in the space, providing a comfortable environment.
Hot Air Exhaust: Meanwhile, the hot air extracted from the condenser is expelled outside through the exhaust hose. This prevents the recirculation of hot air back into the room and ensures efficient cooling.
By continuously repeating this cycle, dual hose portable air conditioners effectively cool down the room, despite initially drawing in air with the same temperature as the room. The compression, heat exchange, and expansion processes within the unit manipulate the air's temperature, leading to a net cooling effect.