#1
Which component is responsible for absorbing heat from the building's air in a chilled water system?
Evaporator
ExplanationAbsorbs heat to cool refrigerant.
#2
What is the function of a chiller in a chilled water system?
To absorb heat from the water
ExplanationRemoves heat from water to provide cooling.
#3
What is the typical operating temperature range of chilled water in a chilled water system?
10-20°C
ExplanationOptimal temperature range for cooling purposes.
#4
What does COP stand for in the context of a chiller's performance?
Coefficient of Performance
ExplanationEfficiency measure comparing energy input to output.
#5
Which of the following is NOT a typical component of a chilled water system?
Boiler
ExplanationHeats water, not part of cooling system.
#6
What is the purpose of an expansion tank in a chilled water system?
To maintain system pressure
ExplanationPrevents pressure buildup as water volume changes.
#7
What is the purpose of a bypass line in a chilled water system?
To allow water to bypass certain components
ExplanationDirects water around specific parts of the system.
#8
Which refrigerant type is commonly used in modern chilled water systems?
R-410A
ExplanationEfficient and environmentally friendly refrigerant.
#9
What is the role of a strainer in a chilled water system?
To remove debris and dirt from the water
ExplanationPrevents clogging of system components.
#10
In a primary-secondary chilled water system, what is the function of the primary loop?
To circulate condenser water to the chiller
ExplanationBrings water from the condenser to the chiller.
#11
In a chilled water system, what is the function of a cooling tower?
To cool the chilled water
ExplanationRemoves heat from water through evaporation.
#12
Which factor primarily determines the size of a chiller in a chilled water system?
Cooling load
ExplanationAmount of heat the chiller needs to remove.
#13
What is the purpose of a chilled water buffer tank in a chilled water system?
To reduce chiller cycling
ExplanationMaintains consistent system pressure and temperature.
#14
Which of the following is a common control strategy used in chilled water systems to optimize energy efficiency?
Variable primary flow
ExplanationAdjusts flow rates based on demand to save energy.
#15
What is the role of a differential pressure transmitter in a chilled water system?
To measure pressure drop across components
ExplanationMonitors pressure differences for system efficiency.
#16
In a variable primary flow chilled water system, what is the primary purpose of varying the flow rate?
To minimize energy consumption
ExplanationReduces energy use during low-demand periods.