This document discusses different types of air conditioning systems. It describes window air conditioners, split air conditioners, package air conditioners, year-round air conditioners, central air conditioners, air cooled systems, and water cooled systems. The key components of air conditioning systems are also identified as the compressor, fan, condenser coil, evaporator coil, distribution system, and grille.

1. GANDHINAGAR INSTITUTE OF TECHNOLOGY
Refrigeration and Air Conditioning (2161908)
Active Learning Assignment
On
Air Conditioning System
Branch : Mechanical Engineering
Batch : 6 C-3
Prepared by: Guided By:
Suthar Chandresh (140120119229) Prof. Shaival Parikh

2. CONTENT
What is air conditioning ?
Air conditioning component.
Types
(1)Window air conditioner system
(2)Split air conditioner system
(3)Package air conditioner system
(4)Year round air conditioner system
(5)Central air conditioner system

3. What is air conditioning?
Air conditioning is the process of removing heat from a
confined space, thus cooling the air, and removing humidity.

4. COMPONENT OF AIR CONDITIONING
Compressor
Fan
Condenser Coil (Hot)
Evaporator Coil (Cool)
Distribution system
Grille
Tray

5. WINDOW AIR CONDITIONER
Window unit air conditioners are installed in an open
window. The interior air is cooled as a fan blows it
over the evaporator. On the exterior the heat drawn
from the interior is dissipated into the environment as
a second fan blows outside air over the condenser. A
large house or building may have several such units,
allowing each room to be cooled separately.

6. SPLIT AIR CONDITIONER
A split air conditioning imply means that the
condenser is separated from the “indoor unit”, thus
the term “split”.
The split air conditioning has at least one unit that
sits inside your room.
The compressor sits outside of the room, sometimes
on the ground or on brackets hung to the wall.

7. PACKAGE AIR CONDITIONING
SYSTEM
The window and split air conditioners are usually used for the small air
conditioning capacities up to 5 tons. The central air conditioning systems
are used for where the cooling loads extend beyond 20 tons. The
packaged air conditioners are used for the cooling capacities in between
these two extremes. The packaged air conditioners are available in the
fixed rated capacities of 3, 5, 7, 10 and 15 tons. These units are used
commonly in places like restaurants, telephone exchanges, homes, small
halls, etc.
As the name implies, in the packaged air conditioners all the important
components of the air conditioners are enclosed in a single casing like
window AC. Thus the compressor, cooling coil, air handling unit and the
air filter are all housed in a single casing and assembled at the factory
location.
Depending on the type of the cooling system used in these systems, the
packaged air conditioners are divided into two types: ones with water
cooled condenser and the ones with air cooled condensers.

9. YEAR ROUND AIR CONDITIONING
SYSTEM
Air conditioner year round is one of those. Cooling and heating
system is used for separate season summer and winter . Air
conditioner year round system is the combination of heating and
cooling . It works winter and summer season so it called year
round air conditioner . You can save your money to buy this
system because it will solve your cooling and heating purpose.
Initial cost of this system is high but in running it will be cheap
because it works both summer and winter season. Due to works in
both season it also called HEAT PUMP.
In the heat pump , it is like a normal air conditioner but It has a”
four way valve” extra from an AC. The valve works and system
gives us cooling and heating. Heat pump is available in window AC
and split AC . You can operate this valve manually or automatically
with the help of remote.

10. Cont.…………
Four way valve is installed on the compressor where suction
line enters into compressor and discharge line outlet. Both
lines goes through this valve . In normal condition system works
like a normal air conditioner and gives us cooling. In winter
season , we use of four way valve for space heating . The four
way valve change the flow direction of refrigerant. In normal
condition the refrigerant goes into condenser through discharge
line. But when valve operate and refrigerant goes into direct
evaporator or cooling coil through suction line . Now evaporator
works like condenser and reject heat in the space & refrigerant
convert vapour to liquid and . We use this heat for space
heating & space get hot and now condenser works like
evaporator and absorb heat from environment & refrigerant
convert liquid to vapour. This vapour goes into compressor
through discharge line and this process run continuously.

12. Central air conditioning system
• The typical central air conditioning system is a split system,
with an outdoor air conditioning, or "compressor-bearing
unit" and an indoor coil, which is usually installed on top of
the furnace in the home.
• Using electricity as its power source, the compressor pumps
refrigerant through the system to gather heat and moisture
from indoors and remove it from the home.
• Heat and moisture are removed from the home when warm
air from inside the home is blown over the cooled indoor coil.
The heat in the air transfers to the coil, thereby "cooling" the
air.
• The heat that has transferred to the coil is then "pumped" to
the exterior of the home, while the cooled air is pumped back
inside, helping to maintain a comfortable indoor temperature.

14. AIR COOLED SYSTEM
An air cooled system transfers heat taken from the space to the
air.
This heated air is then released or expelled. Air equipment can
be located either inside or outside the room to be cooled.
If the cooling unit is located inside the space, the hot air must
be driven by a fan through a duct to somewhere outside the
space.
If the cooling unit must be located outside the space, the hot air
may be released into the air surrounding the unit or again,
driven elsewhere.

15. ADVANTAGES
Air cool is the better option where the heat energy, in the form
of hot air, can be easily dispersed into another area of the
building, often into a suspended ceiling.
It is the best option where there is no availability of water
source.
Is the quickest system to set up – usually just minutes.
Completely portable – can be moved to different locations
easily.

16. WATER COOLED SYSTEM
A water (liquid) cooled system transfers the heat from the
space to water which is then released into a drain line.
The water is supplied through high pressure flexible hoses that
are connected to a domestic water source from a kitchen,
bathroom, or janitor’s sink.
Water may also be supplied from and returned to a chilled
water system in a commercial or industrial setting.
The water cooled unit is used more for cooling enclosed
spaces or spaces in sealed buildings where the existing
building system cannot handle additional heat being dumped on
it.

17. DISADVANTAGES
Water cooled units must be used when there is no place to duct
the heat that an air cooled system collects from the space being
cooled.
When available floor space is a problem, water cooled units are
smaller.
Water cooled units do not create negative air pressure in the
space being cooled.
Water cooled units retain their mobility by using flexible hose.
No condensate tanks to empty as water cooled units contain
pumps.
If cooling tower water is available, no domestic water will be
needed.