How To Calculate The Capacity Needs of Room Air-Con

Many of us often overlook spacious room with air conditioning requirement level. Because we think small place, it is quite simply 1/2PK, or vice versa, because it's big, then we attach 2PK. We think it's more frugal to buy an air conditioner than two AC. Do not buy air conditioner that is too large, resulting in unnecessary or too small, resulting in less cold. There is a simple formula that can be utilized.

The formula:

(L x W x H x I x E) / 60 = BTU requirement
L  = Length of room (in feet)
W = Width of room (in feet)
I   = value 10 if the insulated chamber (located in the basement, or huddle with other space).
        Score 18 if space is not insulated (upstairs).
H  = Height of room (in feet)
E  = value 16 if the longest wall facing north;
        value of 17 if facing east;
        value 18 if facing south;
        value 20 if facing west.

1 Meter = 3.28 Feet

 

AC Capacity based on PK:
 

AC ½ PK    =  ± 5,000 BTU / h
AC ¾ PK    =  ± 7,000 BTU / h
AC 1 PK     =  ± 9,000 BTU / h
AC 1 ½ PK =  ± 12,000 BTU / h
AC 2 PK     =  ± 18,000 BTU / h

Sample Calculation:

Room size 5m x 5m or (16 feet x 16 feet), height of room 3m (10 feet), insulated (coincide with another room), the long wall facing east. Needs BTU = (16 x 16 x 10 x 10 x 17) / 60 = 7,253 BTU, or simply ¾ PK of AC.