Cara Kerja Pendingin Udara (AC)

Summary

This video explains the cooling process of an air conditioner (AC), revealing how it works through a system of components. Air is cooled by circulating through an evaporator, where refrigerant absorbs heat from the room. The heated refrigerant is then compressed, passed through a condenser to release the heat outside, and returned to the evaporator after pressure is reduced. The AC’s fan and compressor work together to regulate temperature by circulating air without changing its contents. Ultimately, the system transfers heat out of the room, creating a cooling effect. The video breaks down these processes for better understanding.

Takeaways

• 😀 The cold air from an air conditioner (AC) comes from the air in the room itself, but its cooling process involves several components.
• 😀 The evaporator in the AC absorbs heat from the room's air, using a special liquid called refrigerant or freon.
• 😀 Freon has a very low boiling point, allowing it to absorb heat from the room even when the temperature is not extremely high.
• 😀 As freon absorbs heat, it changes from liquid to gas and its temperature rises, making it unable to absorb more heat once the surrounding air's temperature is balanced.
• 😀 To continue the cooling process, the freon needs to be cooled down and returned to a liquid state, which is done outside the room in the outdoor unit.
• 😀 The system consists of two key parts: the indoor unit (to cool the air inside the room) and the outdoor unit (to regulate the freon).
• 😀 The refrigerant flows through pipes connecting both units, transferring heat in and out of the room.
• 😀 After freon leaves the evaporator as gas, it goes to the compressor where its pressure is increased, but it remains hot.
• 😀 The hot, high-pressure freon is then sent to the condenser, where it cools down and condenses back into liquid form.
• 😀 The cooled freon returns to the indoor unit, where its pressure is drastically lowered using an expansion valve, causing the temperature to drop further.
• 😀 The AC cooling process is essentially a heat transfer, where the heat from inside the room is moved outside without transferring air from the room itself, resulting in cooler air indoors.

Q & A

How does an air conditioning (AC) system work to cool the air in a room?

An AC system cools the air by circulating the room's air over an evaporator that contains a refrigerant. This refrigerant absorbs the heat from the air, which cools it down. The cooled air is then blown back into the room.

What is the role of the evaporator in the air conditioning process?

The evaporator absorbs heat from the air inside the room through a refrigerant, which helps to lower the temperature of the air. It is made up of a coil and heatsink, where refrigerant flows through to absorb the heat.

What is the function of refrigerant (freon) in an air conditioning system?

Refrigerant, or freon, is a special liquid that has a low boiling point. It absorbs heat from the air, changing its state from liquid to gas. This process lowers the air temperature, making the air cooler.

Why does the temperature of the refrigerant rise after it absorbs heat?

As the refrigerant absorbs heat from the air, its temperature increases. When it reaches a higher temperature than the surrounding environment, it changes from a liquid to a gas and is no longer effective at absorbing heat.

How is the refrigerant cooled down to continue its cycle in the air conditioning system?

The refrigerant is cooled down outside the room in the outdoor unit by a condenser. The condenser reduces the temperature and changes the refrigerant back into a liquid, so it can be reused to absorb more heat inside the room.

What is the function of the compressor in the air conditioning system?

The compressor increases the pressure of the refrigerant, which raises its temperature. After being compressed, the refrigerant is directed to the condenser to release the absorbed heat and cool down.

What happens in the condenser of an air conditioner?

In the condenser, the refrigerant is cooled down by transferring its heat to the surrounding air. This process causes the refrigerant to change from a gas back into a liquid.

How does the expansion valve contribute to cooling the refrigerant?

The expansion valve reduces the pressure of the refrigerant, which causes a dramatic drop in its temperature. This cooling effect is necessary for the refrigerant to absorb more heat when it passes through the evaporator.

What role does the PCB play in the air conditioning system?

The PCB (Printed Circuit Board) controls the air conditioning system by regulating the compressor, fan, and other components based on the settings like temperature and fan speed.

What is the main principle behind the air conditioning process?

The main principle of an air conditioning system is the transfer of heat. The AC removes heat from inside the room and expels it outside, without transferring the air itself. This results in cooler air inside the room.