air condiotioning for freshers

1. AC
L.SOMASUNDARAM
U14ME333

2.  History
 Working
 Types of AC
 Advantages of Air
Conditioners
 Disadvantages of Air
Conditioners
CONTENTS
 R-22
 R-410A
 INDIAN AC
MANUFACTURER
 CONCLUSION

3. HISTORY
 1758 - John Hadley discover that evaporation of alcohol
and other volatile liquids, which evaporate faster than water,
can cool down an object enough to freeze water.
 1902 - the first modern electrical air conditioning unit
was invented by Willis Carrier
 1914 - Air conditioning comes home USES (7 feet high, 6
feet wide, 20 feet long )

4. WORKING

5. TYPES OF AC
Portable Air Conditioners
Window Air Conditioners
Split or ductless air conditioner
Central air conditioning

6. PORTABLE AIR CONDITIONERS
 Portable Air Conditioners are freestanding, easy-to-move
models that cool by pulling in fresh air, removing heat and
moisture, and returning cool air into your space.
 Main benefits include you can move them into different
rooms

8. WINDOW AIR CONDITIONERS
 This type is the most commonly used system for single
rooms.
 In this air conditioner, a single box houses all the
components, namely the condenser, evaporator, compressor,
cooling coil, and expansion valve

10. S P L I T O R D U C T L E S S A I R C O N D I T I O N E R
 This system is called a “split” system because it is made up
of two units: one indoor and one outdoor.
 The former houses the evaporator and cooling fan. The
latter, meanwhile, houses the compressor, expansion valve, and
condenser.

12. CENTRAL AIR CONDITIONING
 This type is best for large buildings, hotels, movie theatres,
factories, and other bigger spaces.
 The condensing unit is placed outside the establishment and
contains the condensing fan, compressor, and condenser coil

14. A DVA NTA GES OF A IR CONDITIONER S
 Under extreme conditions, air conditioners may keep people
safer from heat-induced health problems.
 Air conditioners are used in many commercial settings not only
for increased comfort but for decreasing heat stress on delicate
machinery such as computers, and reducing food spoilage in
grocery stores and restaurants.

15. DISA DVA NTA GES OF A IR
CONDITIONER S
 Air conditioners use a lot of electricity.
 This creates both financial disadvantages for the people
who have to pay for the power, and more generalized
environmental disadvantages caused by power production.
 air conditioning contributes indirectly to the release of
greenhouse gases and other pollutants.

16. R-22
Often referred to by a brand name like Freon®
As of 2010, R-22 was discontinued for use in new
air conditioning systems
R-22 is a hydro-chlorofluorocarbon (HCFC)
which contributes to ozone depletion

17. R-410A
 Often referred to by a brand name like Puron®
 Has been approved for use in new residential air conditioners
 Is a hydro-fluorocarbon (HFC) which does not contribute to
ozone depletion
 Will become the new standard for U.S. residential air
conditioning systems in 2015

18. INDIAN AC
MANUFACTURER
 LG
 Voltas
 Samsung
 Bluestar
 Hitachi
 Carrier
 Daikin
 Panasonic

19. CONCLUSION
 Use AC but off the switch when it is not in use
 Make use of the technology properly