How to estimate the TR requirement for air conditioning system?

The multification factor for converting in electrical power is 1.35KW/1 TR,

For 10 Tr it is 13.5 KW.

TR is equal to 12000 btu/hr.

The multification factor for converting in electrical power is 1.35KW/1 TR,

for 10 Tr it is 13.5 KW.

This is not right. One TR (ton of refrigeration) is equal to 3.51 kW so 10 TR would be 35.1 kW

TR is the abbreviation of Tons of Refrigeration which is the unit of Total Cooling Requirements for a given space

Divide the total area(sqft)by 120 then TR will come on thumb rule bases

Divide the total area (sqft) by 120 then the TR will come on the thumb rule basees