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WorksheetsBuilding Services 2
Total questions: 10
Worksheet time: 10mins
Air Conditioning........
the process for treating air
to control its temperature
to control its humidity
to control its cleanliness
What are the four major components of an air conditioning system?
Condenser
Conduction
Compressor
Evaporator
Thermal expansion valves
What happened in compressor?
First the refrigerant is compressed; turn it into high pressure vapor. Then it is sent into the condenser.
The axle fan will blow the condenser, where its function to cool the refrigerant in the refrigeration cycle.
The high-pressure liquid is sent into the expansion valve; turns into low pressure liquid. Then it is sent into the evaporator.
Finally the low-pressure vapor is back to the compressor for the same process; the overall process is repeated over and over again.
What type of air conditioning in the image?
Window unit
Split unit
Centralised system
Packaged unit
Factors to consider in selecting air conditioning system....
High-pressure
The function of the room
The size of the room
The orientation of the room
In building, mechanical ventilation or forced ventilation system is ............................
To remain unpleasant smells
The use of powered equipment
To replace air in any space
To provide high indoor air quality
Supply ventilation systems ...............
Single exhaust point in the house
Allow air introduced into the house
Pressurize the house
Control of the air that enters the house
What type of mechanical ventilation in the image?
Supply system
Extracted system
Combined system
Split system
What is the benefits of mechanical ventilation system?
Improving indoor air quality
Low Running Costs
Eliminating risk of condensation
Quiet Operation
Basic Components in Mechanical Ventilation System .....................
Ducting and diffusers
Inspiratory flow regulator
Dampers
Mechanical blower
