Building Services 2

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