HVAC - Cooling coil + Calculations ❄️❄️❄️

This video tutorial covers the function and operation of cooling coils in HVAC systems, focusing on two types: refrigerant-based and chilled water cooling coils. It provides maintenance tips to ensure efficiency, discusses installation checks, and demonstrates basic calculations related to cooling coils.

What are the two main types of cooling coils discussed in the video?

• Direct expansion and indirect expansion

• Single-phase and multi-phase

• Refrigerant-based and chilled water

• Air-cooled and water-cooled

How can you identify a refrigerant-based cooling coil?

• By the size of the coil

• By the presence of expansion valves

• By the color of the fins

• By the presence of motorized valves

Why are chilled water cooling coils more economical for large buildings?

• They require less maintenance

• They are easier to install

• They use less energy

• They can be centralized

What is the primary function of the fins in a cooling coil?

• To increase airflow

• To reduce noise

• To support the coil structure

• To enhance heat transfer

What tool is recommended for repairing damaged fins?

• A wrench

• A hammer

• A screwdriver

• A fin comb

What is the effect of dust accumulation on cooling coil fins?

• Improves cooling capacity

• Reduces heat transfer efficiency

• Decreases airflow resistance

• Increases heat transfer

What is the significance of the specific heat capacity in cooling coil calculations?

• It determines the flow rate of air

• It affects the temperature change of water

• It measures the humidity of air

• It calculates the volume of air

How is the cooling load of a coil calculated?

• By measuring the air volume

• By calculating the difference in enthalpy

• By checking the humidity levels

• By assessing the coil size

What happens to the air as it passes through the cooling coil?

• It heats up

• It remains the same temperature

• It cools down

• It becomes more humid

What is the final temperature of the chilled water leaving the cooling coil?

• 15 degrees Celsius

• 20 degrees Celsius

• 10 degrees Celsius

• 6 degrees Celsius