KWH (UNIT)

SHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!<Splutter>

There is bound to be an electrical rating on the AC. From the TPH it is not possible to calculate the KW consumed.

It depends on the

- Efficiency (now being denoted by the mandatory star ratings)

- The Ambient temperature.

- The Insulations.

- The Set temperature.

And the consumption is going to vary across seasons. In the worst case scenario, get the electrical KW x 10 Hrs is the unit consumed per day (?)

A rough approximation:

Using the rule of thumb: 1.25 KW per Ton,

Energy Used = 57 x 1.25 x 10 = 712 KWH

Again, this is just an approximation, the actual consumption depends on many other factors as other participant indicated.

- MS

hi mr.dineshpandit

we can calculate by using the below formula

watts*3.4=BTU

1 ton = 12000BTU

57 ton = 684000BTU

watts = 684000/3.4

watts = 201176.47

KW = 201.176

kwh(10hours) = 201.176*10 = 2011.176

regards

uticobala

Msamad's calculation is close. Here is a good calculation procedure http://joule.bu.edu/~hazen/LinuxCluster/actut.pdf

Uticobala's calculation is ok but it doesn't consider the Performance Factor (K) and that is why it is higher.

Also see the example here

http://wiki.answers.com/Q/How_many_watts_does_an_air_conditioner_have