How Chiller works - Design Data

The video tutorial provides an in-depth look at the components and operation of a centrifugal chiller. It covers the main components: evaporator, compressor, condenser, and expansion valve, and explains the refrigerant cycle, including pressure, temperature, enthalpy, and entropy at various points. The tutorial also details the water flow through the evaporator and condenser, highlighting the differences in flow rates and temperatures. The compressor's role and its operational statistics are discussed, along with the importance of refrigerant properties and calculations for efficient chiller operation.

Which component of the centrifugal chiller is responsible for absorbing heat from the building?

• Condenser

• Expansion Valve

• Compressor

• Evaporator

What is the state of the refrigerant between the evaporator and the compressor?

• High pressure, high temperature saturated vapor

• Low pressure, low temperature saturated vapor

• Low pressure, low temperature liquid-vapor mix

• High pressure, medium temperature saturated liquid

At which point in the refrigerant cycle is the refrigerant a high pressure, medium temperature saturated liquid?

• After the compressor, before the condenser

• Between the evaporator and compressor

• After the condenser, before the expansion valve

• After the expansion valve, before the evaporator

What is the flow rate of water through the evaporator in the example provided?

• 247 cubic feet per minute

• 210 cubic feet per minute

• 99.5 liters per second

• 116.6 liters per second

What is the temperature of the water leaving the evaporator after dumping its heat?

• 35 degrees Celsius

• 29 degrees Celsius

• 6 degrees Celsius

• 12 degrees Celsius

Why is the flow rate higher in the condenser compared to the evaporator?

• The condenser operates at a higher pressure

• The condenser is larger in size

• The condenser uses a different type of refrigerant

• The condenser has to reject more heat

What is the temperature of the condenser water coming in from the cooling tower?

• 12 degrees Celsius

• 35 degrees Celsius

• 6 degrees Celsius

• 29 degrees Celsius

What is the role of the compressor in the chiller system?

• Mixing the refrigerant with water

• Rejecting heat to the atmosphere

• Absorbing heat from the building

• Driving the refrigerant around the system

What is the power consumption of the compressor when running at 100% capacity?

• 356 kilowatts

• 600 kilowatts

• 425.9 kilowatts

• 500 kilowatts

How does the capacity of the chiller affect the refrigerant measurements?

• The measurements vary

• The measurements decrease

• The measurements remain constant

• The measurements increase