Air conditioning and Refrigerator
An air conditioner is used for air conditioning that means decreasing
heat and humidity in a certain area or a vehicle. It gives us much more comfortable
environment air conditioner gives us cooling by refrigeration cycle, air conditioner distribute conditioned
air to a specified areaand give comfortable environment
Air conditioning is the process of conditioning air, removing humidity, improves
air movements, cleaning and ventilation. This system is referred as heating ventilation
and air conditioning (HVAC).
Refrigerator is another
house hold machine which uses electrical/mechanical/chemical way cool an
insulated small area. It transfers heat from the insulated area to outside the room.
This process keeps the insulated area cool and we can use refrigerator to store
food.
Lower temperature inside
the fridge helps to keep food items for long time without spoil. Lower
temperature helps to decrease reproduction rate of bacteria.
How an air conditioner works
We are familiar with 2 cooling devices one is AC and another is
refrigerator both devices have same mechanism for cooling. Refrigerator cools a
certain area which is insulated but air conditioner used to cool a large area. Both use chemicals to
transfer heat from the house to
outside air.
An Ac contains mainly
three parts
1. Compressor
2. Condenser
3. Evaporator
Commonly Evaporator is located inside the
room and compressor and condenser outside the air portion.
Air conditioning
mechanism transfers gas to liquid and wise versa that’s helps it to remove heat
air inside the house to outside. Working fluid in the compressor arrives as a
low pressure gas and compressor make this low pressure gas to high pressure gas
by compressing. This process produce large amount of heat. We can see a fan is
attached with ac is to remove this temperature.
This high pressure gas
enters into condenser and converts this high pressure gas into cool liquid. This
liquid then passes though Evaporator into the room makes it cool. Heat air from
room absorbs this cool liquid gas. After combining with high temperature room
air condensed liquid gas converts into cool air.
Evaporator has fins which
are mainly used to transfer this condensed liquid air to all over the room.
Evaporator also has fans which works together to complete the tasks.
This evaporated gas finally
come back to compressor and the cycle start all over
How a refrigerator works
In the case of
refrigerator this process all takes place inside the fridge. Similar to air
conditioner refrigerator have compressor, condenser and evaporator. Compressor
changes air into high pressure gas and pass to condenser which cools the gas
and changes to liquid gas then pass to evaporator which then evaporate the
liquid gas to refrigerator and cools it. This air finally comes back to
compressor and the cycle continues.
Uses of Air conditioner
Most common commercial
use of air conditioner for conditioning commercial, room, indoor, industrial
spaces, institutional buildings low space residential buildings. Etc
Other uses of air
conditioner is also important
1. in laboratories to find precise measurements
in different temperature.
2. To study effect of
temperature in living organisms
3. Textile and other manufacturing
industries depend up on moisturized and conditioned air.
4. Steel manufacturing
industry need dry air
5. Pharmaceutical
industry need refrigerator to keep medicines and bacteria.
6. Photographic
industry need air conditioning.
7. Farm animals and
some zoo animals need conditioned air
