To calculate the area in square metres.
Computer room air conditioner sizing.
A 20 ton four step unit may activate 5 tons of cooling before enabling the next step as heat increases to 10 15 and 20 tons of load.
To choose what size air conditioner is for right for you you need to first calculate size of the home spaces served by the air conditioner in square feet.
Computer room air conditioners with refrigeration compressors the true cracs are available in multi step designs.
Floor area of room.
Residential central air conditioners come in a range of sizes from 1 5 ton to 5 ton models.
3 75 0 0 3 75 so you d need a 3 5 or a 4 ton sized central air conditioning unit in hot and arid climates southern california arizona etc.
The watt loads of each of the factors described earlier in this summary can be summed to determine the total thermal load.
45 000 12 000 3 75.
If the room is a perfectly square 20 feet by 20 feet the total area would be 400 square feet.
Measure the area to be air conditioned heated including windows doors etc and what direction they face.
Write the measured value into the appropriate line of column a step four.
For instance if the room is a rectangular 10 feet by 20 feet the area would be 200 square feet.
Calculate size to calculate the size simply multiply the length times the width of the room or area to be cooled.
Print out this calculator step two.
Window air conditioners typically have a cooling capacity ranging from 5 000 to 12 500 british thermal units btu hr.
Multiply the value in column a by the most appropriate multiplying factor in column b and write your answer in the cooling load column.
Room and air conditioner sizing guide once you have the size of the area that you are wanting to install the air conditioner in follow the guide below to determine your approximate kw range.
Sizing air conditioning once the cooling requirements are determined it is possible to size an air conditioning system.
As a rule of thumb an air conditioner needs 20 btu for each square foot of.
Window size and position.
Instead of subtracting 1 0 instead subtract zero to get the appropriate ac size for hot and arid climates.
When we talk about air conditioning a ton is the measurement of a units ability to cool.
If as is quite common your server room has no windows you can ignore this part of the calculation.
1 500 x 30 45 000.
Room area btu length m x width m x 337.
If you have a one ton ac unit it means it has the ability to cool 12 000 btus an hour.
