IN THIS I HAVE EXPLAIN YOU ABOUT THE AIR CONDITION AND ALSO I HAVE EXPLAIN IN THIS ABOUT THE CLASSIFICATION OF AIR CONDITIONING

1. Course: INDUSTRIAL INTERNSHIP
Course code : BTME 4008
Semester: VII
Year: IVth (Mechanical engg)
Academic session : FALL 2021-
2022
TOPIC: Air Conditioning And It’s Types
SUBMITTED BY- NAVED
KHAN
ADM N0: 18SCME1010004
SCHOOL OF MECHANICAL
ENGINEERING
GALGOTIAS UNIVERSITY
SUBMITTED To:-
• Mr Praveen Sir
• Mrs Priyanka
Jain

2.  Parts
 The Refrigeration System
 Installation
 Installation Parametersfdfd

3.  Air conditioning (often referred to as A/C or AC ) is the process
of altering the properties of air (primarily temperature and
humidity) to more comfortable conditions, typically with the aim
of distributing the conditioned air to an occupied space to
improve thermal comfort and indoor air quality .
 Air conditioning is defined as a process which cools (or heat) ,
clean, circulates, freshen air, and controls its moisture content
simultaneously.
 Most of the air conditioning, particularly in India and such other
countries, is about cooling : i.e. removal of heat from an
enclosed space.
 In the most general sense, air conditioning can refer to any form
of technology that modifies the condition of air (heating, cooling,
(de)humidification, cleaning, ventilation, or air movement).

4. The four atmospheric condition which affect human comforts are:-
 An air conditioner controls the above factors for us to achieve human comfort.
 Most people (90%) are comfortable when the air temperature is between 18-22°C
and the %sat is between 40-65%.

5.  In a well climatically designed building human comfort factors are controlled
naturally, that is the best solution.
 In big building/complexes it is not possible to design entire building
comfortably by natural energy sources like sun, wind, orientation etc.
 In such cases we have to take the help of mechanical mean for obtaining
comfortable conditions inside the building.
 The science & practice of creating a controlled climate in indoor space is
called Air conditioning.
 Outside air is quite likely to be at a different condition from the required
comfort zone condition. In order to bring its condition to within the comfort
zone we may need to do one or more of the following:-heat it; cool it;
dehumidify it; humidify it; or mix it.
 Due to the various sources of heat the temperature inside the room becomes
very high and the relativehumidity 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 conditionsinside the room

6. Advantages:
 Increased comfort level.
 In extreme heat, air-conditioning can
be a life saver.
 Most air conditioners also reduce the
humidity level, which helps both
comfort, and reduces mold growth.
 Less noise as the windows will be
closed.
 Prevents the dust entering the room as
the windows will be closed.
 Gives constant temperature.
 Attractive design.
 Simple control.
 Easy maintenance.
 Easy installation.
Disadvantages:
 Most air conditioners use a substantial
amount of energy.
 High cost money .
 Contributing to pollution from power
plants.
 Older models contain chemicals that
can damage the environment if they
escape.
 Encourages laziness.
 Habitant spending time indoors
instead of out.
 Habitants have less contact with
nature.
 Too cool temperatures will lead to
improper blood circulation.
 Effects the environment by releasing
the cfc's.

8. Classification based on major function:-
(a) Comfort A.C.: Creating atmospheric conditions conductive to human health, comfort & efficiency. A.C. in
home, offices, stores, restaurants, theatres, hospitals etc. are of these types.
(b) Industrial A.C.: The purpose of these system is to control atmospheric conditions primarily for proper
conduct of research & manufacturing e.g. electronics & computer industries, paper mills, textile mills, candy
factories, photo processing etc.
Classification based on equipments arranged:
a) Unitary or “packed” A.C.
b) Spit A.C.
c) Central A.C.
d) Combination of above.
Classification based on season of the year:
a) Winter A.C.: system: These systems, when properly designed & installed maintain indoor atmospheric
conditions for winter comfortable, namely temperature, humidity. Air purity & airmovements, when outside
temperature is very cold.
b) Summer A.C.: Maintains indoor condition comfortable when outside atmospheric conditions are not
comfortable, but it is very hot & dry.
c) All year round A.C.: Maintains indoor temperature comfortable throughout the year, while outside
temperature may be very cold or hot.

9. Classification based on installation
position:
• Windows AC
• Split or Ductless AC
• Centralised AC
• These types of AC are designed to be fitted in
window sills.
• A single unit of Window Air Conditioner houses
all the necessary components, namely the
compressor, condenser, expansion valve or coil,
evaporator and cooling coil enclosed in a single
box.
• Since a window AC is a single unit, it takes less
effort to install as well as for maintenance.
• This is the most commonly used air conditioner
for single rooms.
Advantages
•Single unit air conditioner.
•Less effort needed for installation.
•Costs lesser in comparison to other varieties.

10. The whole assembly of the window air conditioner can be
divided into two compartments:
the room side, which is also the cooling side and
the outdoor side from where the heat absorbed by the
room air is liberated to the atmosphere.
The room side and outdoor side are separated from each
other by an insulated partition enclosed inside the window
air conditioner assembly.
The various parts of the
Window air conditioner can be divided into following
categories:
i. the refrigeration system,
ii. air circulation system,
iii. ventilation system,
iv. control system,
v. electrical protection system.

11. The REFRIGERATION SYSTEM of the window air conditioner comprises of all the important parts of the refrigeration
cycle. These include
the compressor,
condenser,
expansion valve and
the evaporator.
• The refrigerant used in most of the window air conditioners is R22.
• The compressor used in the window air conditioners is hermetically sealed type, which is portable one. This
compressor has long life and it carries long warranty periods. The condenser is made up of copper tubing and it is
cooled by the atmospheric air. The condenser is covered with the fins to enable faster heat transfer rate from it.
• The capillary tubing made up of various rounds of the copper coil is used as the expansion valve in the window air
conditioners. Just before the capillary there is drier filter that filters the refrigerant and also removes the moisture
particles, if present in the refrigerant.
• Like condenser, the evaporator is also made up of copper tubing of number of turns and is covered with the fins.
• The evaporator is also called as the cooling coil since the rooms air passes over it and gets cooled. Just in front of
the evaporator there is air filter fitted in the front panel or front grill. As the room air is absorbed, it is first passed
over the filter so that it gets filtered. The filtered air is then blown over the cooling coil and the chilled air is passed
into the room.
• The refrigerant after leaving the cooling coil enters the accumulator where it is accumulated and then it is again
sucked by the compressor for recirculation over the whole cycle.

15. Installation Parameters For Window Air-
conditioner:

16.  These are kits of 2 units, one internal and another external.
 The indoor unit installed inside a room intakes warm air and
throws in cold air.
 The outdoor unit on the other hand is installed out of the
house. It contains the compressor and is linked to the
internal unit via drain pipes and electric cables.
 This external unit throws out the warm air.
 Split air conditioners are used for small rooms and halls,
usually in places where window air conditioners cannot be
installed. However, these days many people prefer split air
conditioner units even for places where window air
conditioners can be fitted.
 The split air conditioner takes up a very small space of your
room, looks aesthetically cool and makes very little noise.
Advantages
 Internal unit takes up less space for installation
 Usually more silent than window ACs
 Minimally affect your home decor
 Can be installed in room with no windows

17. There are two main parts of the split air conditioner. These are:
1) Outdoor unit: This unit houses important components of the air conditioner like the compressor,
condenser coil and also the expansion coil or capillary tubing.
 This unit is installed outside the room or office space which is to be cooled.
 The compressor is the maximum noise making part of the air conditioner, and since in the split
air conditioner, it is located outside the room, the major source of noise is eliminated.
 In the outdoor unit there is a fan that blows air over the condenser thus cooling the compressed
Freon gas in it.
 This gas passes through the expansion coil and gets converted into low pressure, low
temperature partial gas and partial liquid Freon fluid.
2) Indoor unit: It is the indoor unit that produces the cooling effect inside the room or the office.
 This is a beautiful looking tall unit usually white in color, though these days a number of stylish
models of the indoor unit are being launched.
 The indoor unit houses the evaporator coil or the cooling coil, a long blower and the filter.
 After passing from the expansion coil, the chilled Freon fluid enters the cooling coil.
 The blower sucks the hot, humid and filtered air from the room and it blows it over the cooling
coil.
 As the air passes over cooling coil its temperature reduces drastically and also loses the excess
moisture.
 The cool and dry air enters the room and maintains comfortable conditions of around 25-27
degree Celsius as per the requirements.

23. Reference:
 https://simple.wikipedia.org/wiki/Air_conditioner
 https://www.engineeringenotes.com/mechanical-engineering/air-
conditioning/air-conditioning-definition-factors-and-types-mechanical-
engineering/36056
 https://www.merriam-webster.com/dictionary/air-condition
 https://www.slideshare.net/NooruleInieOsman/air-conditioning-system
 https://www.slideshare.net/arabhinavknp/final-presentation-air-
conditioning
 https://www.slideshare.net/creightonlaircey/how-a-split-ac-works

24. THANK YOU