Penjelasan Tentang instalasi AHU accsesoris

Summary

This video tutorial explains the working system of Air Handling Units (AHUs) used in hotel air conditioning systems. The presenter covers various components such as the cooling coil, filters, blowers, and ducting that are involved in controlling air temperature, humidity, and cleanliness. Detailed information is provided on the flow of air, including both recirculated and fresh air, as well as how temperature and pressure are monitored. The video also highlights the installation and maintenance aspects of the system, offering insights into air distribution through various components like valves and volume dampers to ensure optimal air quality and comfort in hotel environments.

Takeaways

• 😀 The system discussed is an Air Handling Unit (AHU) which is part of HVAC, used for regulating temperature, humidity, air pressure, and cleanliness in a space.
• 😀 Air is supplied to the room from two main sources: recycled air from the room itself and fresh air from outside.
• 😀 Temperature readings are displayed in both Celsius (0-100°C) and Fahrenheit (50-200°F) to monitor system performance.
• 😀 The Chiller setpoint, typically 6°C, influences the temperature of air supplied to the room, which can vary depending on the installation height (e.g., basement vs. rooftop).
• 😀 The installation includes a cooling coil (also called an evaporator) responsible for regulating air temperature and humidity.
• 😀 Insulation, such as Insuflex, is used to prevent condensation on pipes carrying chilled water.
• 😀 The system uses valves to regulate the flow of water and air through pipes, ensuring proper cooling and heating, and to handle pressure changes.
• 😀 Blowers are used to circulate air into the room, with variable speed drives (VSD) adjusting air distribution based on demand.
• 😀 Filters are used to remove large and small particulates from the air to ensure clean airflow through the system.
• 😀 The system incorporates a volume damper to control the volume of air supplied to the room, helping to adjust the air distribution efficiently.

Q & A

What is the role of air handling units (AHUs) in HVAC systems?

Air Handling Units (AHUs) are responsible for controlling the temperature, humidity, pressure, and cleanliness of air. They distribute conditioned air throughout a building via ductwork, ensuring a comfortable environment.

What are the two main sources of air supply in an AHU system?

The two main sources of air supply in an AHU system are recycled air from inside the building and fresh outdoor air. These sources are filtered and conditioned before being circulated into the building.

How does the temperature measurement work in the system?

Temperature is measured using a sensor that shows both Celsius and Fahrenheit readings. For example, a temperature reading in Celsius could be around 18°C, which corresponds to the supply temperature being regulated by the system.

What is the function of the cooling coil in an AHU?

The cooling coil is responsible for controlling the air temperature and humidity. It cools and dehumidifies the air as it passes through, typically using chilled water supplied from a chiller unit.

What does the blower in the AHU do?

The blower is used to circulate the conditioned air throughout the building. It moves the cooled air via ducting and ensures that air reaches the rooms through diffusers.

What is the purpose of the volume damper in the AHU system?

The volume damper is used to regulate the airflow within the system. It adjusts the amount of air supplied to different areas by controlling the opening of ducts.

How does the system maintain air quality?

Air quality is maintained by using filters that trap dust, dirt, and other contaminants. These filters ensure that only clean air enters the system and circulates throughout the building.

What happens when there is a leak or malfunction in the system?

If there is a leak or malfunction, certain valves, such as the pressure relief valve, can be used to shut off the affected areas. This ensures that the system continues to function properly and maintains efficiency.

Why is insulation used in the system's piping?

Insulation, such as the use of Insuflex, is used around pipes to prevent condensation. This is important because condensation could cause water damage or reduce system efficiency.

What role do sensors play in the AHU system?

Sensors in the AHU system are used to measure various factors, including temperature, pressure, and humidity. These sensors help to monitor and control the conditions within the air handling unit to ensure proper operation and air quality.