How Air Cooled Chiller Works - Advanced

The video tutorial provides an in-depth look at air cooled chillers, focusing on the refrigerant's properties and behavior at various points in the system. It covers the components of the chiller, including the compressor, condenser, expansion valve, and evaporator. The tutorial explains how to graphically analyze the refrigerant's temperature, pressure, enthalpy, and entropy, and discusses the state changes of the refrigerant. Additionally, it covers heat transfer calculations and flow rates for both air and chilled water, emphasizing the importance of understanding these concepts for efficient chiller operation.

What is the first component of an air cooled chiller discussed in the video?

• Condenser

• Evaporator

• Compressor

• Expansion Valve

At which point is the refrigerant a high pressure, high temperature superheated vapor?

• Point 3

• Point 4

• Point 1

• Point 2

What remains constant when the refrigerant is compressed from point 1 to point 2?

• Enthalpy

• Temperature

• Pressure

• Entropy

What is the pressure of the refrigerant at point 3?

• 500 kPa

• 1500 kPa

• 1000 kPa

• 350 kPa

What is the volume flow rate of air across the condenser?

• 45.5 cubic meters per second

• 60.2 cubic meters per second

• 30.75 cubic meters per second

• 15.8 cubic meters per second

What is the temperature of the chilled water entering the evaporator?

• 6 degrees Celsius

• 24 degrees Celsius

• 18 degrees Celsius

• 12 degrees Celsius

How is the compressor power calculated?

• By multiplying the temperature difference by the mass flow rate

• By dividing the entropy difference by the mass flow rate

• By subtracting enthalpy 1 from enthalpy 2 and multiplying by the mass flow rate

• By adding the pressure difference to the mass flow rate