Mechanical in building system 2

Air Conditioning....

• the process for treating air

• to control its temperature

• to control its cleanliness

• to control its humidity

All the four major components of an air conditioning system. Except?

• Evaporator

• Conduction

• Thermal expansion valves

• Condenser

• Compressor

What happened in compressor?

• 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.

• First the refrigerant is compressed; turn it into high pressure vapor. Then it is sent into the condenser.

Factors to consider in selecting air conditioning system....

• The function of the room

• The size of the room

• High-pressure

• The orientation of the room

What is the benefits of mechanical ventilation system?

• Improving indoor air quality

• Eliminating risk of condensation

• Quiet Operation

• Low Running Costs

Below all the basic Components in Mechanical Ventilation System .Except?

• Ducting and diffusers

• Mechanical blower

• Inspiratory flow regulator

• Dampers

Which fan can produce high pressure and has the capacity for large air volume?

• Centrifugal fan

• Propeller fan

• Axial fan

Which air filter suitable to remove smells and chemical vapors

• Activated carbon

• HEPA

• Pleated filter

• Fiberglass filter

Duties of a site supervisior overseeing mechanical system installation in building construction are:

i- Monitoring construction activities

ii. Ensuring compliance with design specifications

iii. Maintaining safety standards

iv. Coordination with others teams

• i,ii

• i,ii,iii

• i,ii,iii,iv

• i.ii,iv

Which stage to identify a full availability and completion of technical documents that during construction and operation stage

• Document review

• Inspection

• Functional test

• Reporting