Function and the types of Air conditioning for beginners

1. AIR CONDITIONING SYSTEM

2. OBJECTIVES
 COMPONENTS OF THE AIR CONDITIONING
SYSTEM
 PROCESS OF THE CYCLE OF AIR CONDITIONER

3. INTRODUCTION
Building Services is what make the building comes to its life.
• What makes the building work.
• Building should be designed in such a way to provide an
environment, where people can feel comfortable, work, live and
achieve.
• So everything inside a building which make it safe and comfortable,
comes under the title of Building Services.

4. IMPORTANT BUILDING SERVICES
• HVAC
• Electrical
• Fire Services
• Plumbing and Drainage
• Lift Services
• Security
• Telecommunication
• Building Automation
Systems

5. WHY WE NEED AC ?
• Due to the various sources of heat the temperature
inside the room becomes very high and the relative
humidity can also be high. Further, there can also
be less flow of air inside the room. All these factors
lead to creation of highly uncomfortable conditions
inside the room

6. Human beings
Electrical and electronic appliances
THE HEAT PRODUCES IN TWO WAYS

7. WHAT IS AIR CONDITIONING SYSTEM
Air conditioning is the process of removing heat from a
confined space, thus cooling the air, and removing humidity. Air
conditioning can be used in both domestic and commercial
environments. This process is used to achieve a more comfortable
interior environment, typically for humans or animals, however, air
conditioning is also used to cool/dehumidify rooms filled with heat-
producing electronic devices, such as computer servers, power
amplifiers, and even to display and store artwork.

8. ELEMENTS OF AIR
CONDITIONING SYSTEM

9. BASIC ELEMENTS OF AIR
CONDITIONING SYSTEM
Compressor
Condenser
Expansion Valve
Evaporator

10. COMPRESSOR
• Air conditioner compressor is used
to remove the heat-laden vapour
refrigerant from the evaporator of the
air conditioning systems.

11. COMPRESSOR
• There are basically 5 types of air conditioner compressor
that are commonly used in the HVAC industry:
1.Reciprocating
2.Scroll
3.Screw
4.Rotary
5.Centrifugal

12. CONDENSER
In systems involving heat
transfer, a condenser is a
device or unit used to condense
a substance from its gaseous to
its liquid state, by cooling it

13. CONDENSER
• There are basically three types of condensing unit
depending on how the heat is removed by the
condensing medium which is usually water, air or a
combination of both.
1.Air-Cooled
2.Water-Cooled
3.Evaporative

14. EXPANSION VALVE

15. • The main purpose of this is removes pressure from the liquid
refrigerant to allow expansion or change of state from a liquid
to a vapor in the evaporator.
• The high pressure refrigerant entering the expansion valve is
quite warm.
• The is mainly two types used in the air condition system
1. Internally equalized valve : most common.
2. Externally equalized valve : for special control.

16. EVAPORATOR
• It is remove heat from air , water or other
substance.
• Refrigerant liquid is converted to gas,
absorbing heat from the air in the
compartment.

18. PROCESS OF AIR-CONDITIONING

19. MAINLY AIR CONDITIONER HAS 4 COMPONENTS.
– The compressor
– The condenser
– The expansion valve
– The evaporator
Apart from these 4 components we have to consider
about The copper refrigerant tube

20. BRIEFLY IDENTIFY THE PROCESS OF
EACH COMPONANTS

21. HOW REFRIGERANT GAS FLOW
THROUGH THE CYCLE

22. ACTUAL PROCESS OF THE AIR
CONDITIONING

23. TYPES OF AIR CONDITIONERS

24. TYPES OF AIR CONDITIONERS
• There are three types of air conditioners
• Room Air Conditioning system
» Split Air Conditioning system
» Window Air Conditioning system
• Package Air Conditioning system
» Water cooled condenser
» Air cooled condenser
• Central Air Conditioning system
» Direct expansion or DX central Air Conditioning plant
» Chilled water central Air Conditioning plant

25. ROOM AIR CONDITIONING SYSTEM
• Split Air Conditioning system
This is consisted with two parts,
 Indoor unit
 Outdoor unit
– Types of Split Air Conditioning system
• Ceiling Mounted (Cassette Unit)
• Floor Mounted
• Duct type

26. ROOM AIR CONDITIONING SYSTEM CNT.

27. ROOM AIR CONDITIONING SYSTEM CNT.
 Window Air Conditioning system
This is the most common system for single rooms

28. ROOM AIR CONDITIONING UNIT CNT.
Split Air Conditioning system Vs. Window Air Conditioning system
Split Unit Window unit
Suitable for small rooms with a
window sill
Suitable any room with or
without a window
Noise is relatively on the
higher side
Minimal noise
Capacity range is 0.75 ton to 2
ton
Capacity range 0.8 to 2 ton
Ease of installation Need some effort in installation

29. PACKAGE AIR CONDITIONING SYSTEM
• Water cooled condenser
In this system condenser is cooled by water.Water has to be
supplied continuously in these systems to maintain functioning of the air conditioning system.
The water cooled condenser is used as a function to reject the heat that was absorbed by the
refrigerant in the evaporator. Water which is used for the purpose is transferred to a drain line
after using in the condenser.

30. PACKAGE AIR CONDITIONING SYSTEM CNT.
Air cooled condenser
This system is called as air cooled
condenser because in this system atmospheric air is used for cooling
the condenser.

31. CENTRAL AIR CONDITIONING
SYSTEM

32. WHAT ARE THE TYPES OF CENTRAL AIR
CONDITIONER???
• Split-system unit
• Packaged unit

33. SPLIT-SYSTEM UNIT
• In many split-system air conditioners, this indoor cabinet
also contains a furnace or the indoor part of a heat pump.
• The air conditioner's evaporator coil is installed in the
cabinet or main supply duct of this furnace or heat pump.
• If your home already has a furnace but no air conditioner,
a split-system is the most economical central air
conditioner to install.

34. PACKAGED CENTRAL AIR CONDITIONER
• In a packaged central air conditioner, the evaporator, condenser,
and compressor are all located in one cabinet, which usually is
placed on a roof or on a concrete slab next to the house's
foundation.
• This type of air conditioner also is used in small commercial
buildings.

35. CHILLED WATER CENTRAL AIR
CONDITIONING PLANTS
• The chilled water types of central air conditioning plants are
installed in the place where whole large buildings, shopping mall,
airport, hotel, etc. comprising of several floors are to be air
conditioned
• In chilled water plants, the ordinary water is chilled to very low
temperatures of about 6 to 8 degree Celsius by the refrigeration
plant

36. CHILLED WATER CENTRAL AIR CONDITIONING
PLANTS

37. DIRECT EXPANSION (DX) TYPE OF CENTRAL
AIR CONDITIONING PLANT
• In the direct expansion or DX types of air central conditioning plants
the air used for cooling space is directly chilled by the refrigerant in
the cooling coil of the air handling unit. Since the air is cooled
directly by the refrigerant the cooling efficiency of the DX plants is
higher

38. THREE MAIN COMPARTMENTS OF THE DX TYPE OF
CENTRAL CONDITIONING SYSTEMS
• DX Central Air Conditioning Plant
• The Plant Room
• The Air Handling Unit Room
• Air Conditioned Room

39. CONCLUSION

40. QUESTION AND ANSWERS