Cara Kerja AC central menggunakan cooling tower

Summary

This video explains how a central air conditioning system works, focusing on the three circulation systems: water cooling, refrigerant Chiller, and water Chiller. It begins with a detailed breakdown of how water cools the condenser in the cooling tower, followed by an explanation of refrigerant circulation in the compressor and how it regulates temperature. Finally, it covers how water circulation in the Chiller cools air in large spaces like malls and offices. Viewers are also reminded of the importance of proper maintenance to ensure efficient AC performance.

Takeaways

• ❄️ Central AC consists of three circulation systems: water circulation, refrigerant circulation, and water chiller circulation.
• 💧 Water cooling circulation moves water from the cooling tower to the condenser unit using a pump, cooling the water from 35°C to 30°C.
• 🌬️ Water flows through an uneven surface in the cooling tower to reduce temperature effectively.
• 🔥 Refrigerant circulation involves pumping refrigerant with a compressor to control pressure and temperature for optimal cooling.
• 📉 After passing through the capillary pipe, the refrigerant temperature drops significantly and turns into a liquid.
• 💨 In the evaporator, refrigerant undergoes a sudden drop in pressure and temperature, cooling the surrounding air.
• 🔄 The cold air generated by the evaporator is then used to cool the environment and is part of a continuous cycle.
• 💦 Water chiller circulation cools water to 6°C in the evaporator before it circulates to the AHU (Air Handling Unit).
• 🏢 The AHU distributes cool air to large spaces like malls, offices, hotels, and production rooms.
• 🛠️ Proper maintenance of the cooling tower and water chiller system, such as keeping the water pH balanced, prevents issues like overheating, leaks, and corrosion.

Q & A

What are the three main circulation systems in a central AC system?

The three main circulation systems in a central AC system are: 1) Water circulation from the cooling tower, 2) Refrigerant circulation in the chiller, and 3) Water circulation in the chiller system.

How does the water circulation system from the cooling tower work?

The water circulation from the cooling tower uses a pump to move water from the cooling tower to the condenser unit. The water heats up to 35°C in the condenser and is then cooled down to 30°C as it passes through the cooling tower, where fans and media fillers help to reduce the temperature.

What role does the condenser play in the water circulation system?

In the water circulation system, the condenser increases the temperature of the water to 35°C before it is sent to the cooling tower for cooling. This process repeats continuously to maintain the system's efficiency.

How does refrigerant circulation in the central AC system function?

Refrigerant circulation involves the refrigerant being pumped by a compressor to the condenser, where its temperature is lowered. It then passes through the capillary expansion pipe, reducing its temperature and becoming a liquid, which is then circulated through the evaporator to absorb heat from the surrounding air.

What is the function of the capillary expansion pipe in the refrigerant circulation?

The capillary expansion pipe reduces the temperature and pressure of the refrigerant as it passes through it. This helps turn the refrigerant into a cooler liquid before it enters the evaporator.

What happens in the evaporator during refrigerant circulation?

In the evaporator, the refrigerant absorbs heat from the surrounding area, cooling the air. This is where the temperature exchange occurs, and the refrigerant helps cool the air, which is then distributed to the space being conditioned.

What is the temperature range of the water in the water chiller system?

In the water chiller system, the water is cooled to around 6°C in the evaporator and is then circulated to air handling units (AHU). After cooling the air, the water returns at a temperature of around 12°C to the evaporator to be cooled again.

How is the cooled air distributed in buildings with a central AC system?

Cooled air is distributed through air handling units (AHU) using blowers. The cool air from the AHU is supplied to various spaces, such as malls, offices, hotels, and production rooms.

What maintenance practices are important for keeping a central AC system running efficiently?

It is important to maintain the cleanliness of the AHU and cooling tower, monitor the water's pH levels, and follow proper maintenance procedures to prevent overheating, leaks, or corrosion in the system.

Why is it essential to maintain the cooling tower and water chiller properly?

Proper maintenance of the cooling tower and water chiller ensures that the AC system does not overheat or develop leaks or corrosion, which can reduce efficiency and lead to damage.