Split Air Conditioner System

Article by Haresh Khemani (22,643 pts ) , published Aug 15, 2009

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.

Do you have a single room but no place to make a slot for the window air conditioner? No problem, there is an excellent option in the form of a split air conditioner. The split air conditioner can be installed in rooms and offices where you don’t want to disturb the setup of the room and avoid demolitions in your favorite space. The split air conditioner takes up a very small space of your room, looks aesthetically cool and makes very little noise, ensuring sound sleep for you when you return from your day’s hard work.

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.

Split Unit

The temperature inside the space can be maintained by thermostat setting. The setting should be such that comfortable conditions are maintained inside the room, and there is also chance for the compressor to trip at regular intervals. If the compressor keeps running continuously without break, its life will reduce.

These days multi-split air conditioners are also being used commonly. In units for one outdoor unit there are two indoor units which can be placed in two different rooms or at two different locations inside a large room.

Since there is long distance between the indoor and the outdoor unit, there is always loss of some cooling effect; hence for the same tonnage, split air conditioners produce somewhat less cooling effect than window air conditioners. However, with modern insulation material this gap has been reducing between the two. In any case, there are number of instances where there is just no alternative to the split air conditioners.

Must read:

1) Parts of the Split Air Conditioner

2) Installation of the Split Air Conditioners

18 Comments

Showing page 1 of 2 (18 Comments)
Oct 24, 2009 7:39 AM
Split
Dear Seshgiri,

The split units are available for up to five tonnes. In most of these units air cooled condensers, the ones similar to window ac condensers are used.
Oct 24, 2009 7:14 AM
K.SeshagirI Rao
Hi
Hi sir, how much capacity of split air conditioners are available in the market. And tell me what type of condensers are used in that system.
Oct 2, 2009 11:47 AM
Gayan
air codition
dear sir,
can u send me to all type of air condition brands. split & window & out door type. world use
Sep 16, 2009 11:35 PM
Cost
Hi Swapnil,

The cost of the 1.5 ton split unit starts from Rs. 20,000 and can go up to Rs. 35,000 depending on the brand. The installation charges are usually Rs. 1000/-. Some companies include the installation charges in the cost of the split AC and don't charge separately.

Thanks,

Haresh
Sep 16, 2009 9:51 AM
swapnil
cost
what is the appx. cost of installation of split ac
Aug 24, 2009 5:30 PM
abdul razak
My thomson (china Made )split unit (2ton)
is compressor working frequently only
this is causing (almost 10 minutes in an hour) after that compressor get off) when we change some adjustments in remote again (may/may be) will start working
i dont know actually what is this problem?
please help me

a. razak
Aug 22, 2009 1:57 AM
Split AC help
Dear Mano,

I can't really see anything wrong in the unit. The only problem is you have not been using the remote buttons correctly. I would recommend you call the dealer from whom you have purchased the unit and ask them to demonstrate the working of the unit. This should help you instantly.

Thanks,

Haresh
Aug 21, 2009 10:49 AM
mano
split air conditioner help!
hey :)
i have a split air conditioner and i hav eno idea how to use it .
it says "cool,off,heat"
and "auto,on"

so i select "cool" and "auto" but the lowest degree you can go is 50..is that normal cuz shouldnt it be 25 or sometihng but it wont go less than 50?
and i checked and the the main system for air conditioner is turned on..so whats the problem.

ps.i use it for 20 minutes ans see no difference so i always stop it cuz its SOO hot in where i live and i cant live a second w/o the window open since the i dont know how to use the air conditioner..so please tell me what im doing wrong ? and what should the degree be at? is 50 bad? i have no idea at all.please help mee! thanksss :)
Aug 16, 2009 11:22 PM
2 in 1
Hi Varun,

Yes, this mode is successful, it is called multi-split unit.

Thanks,

Haresh
Aug 16, 2009 3:25 PM
varun
2 in 1
Hi,

Am thinking of buying a 2 indoor unit with 1 outdoor aplit a/c... please advise if this is a successful mode..
Showing page 1 of 2 (18 Comments)