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# BTU and kWh?

## BTU and kWh?

#1
10-10-11, 01:59 PM
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BTU and kWh?

Some air conditioners are 9000 some 10500 and some 12000 BTU. What is it exactly and how many BTU i need for a 3.78x3.45x3.23 room?

Also if specific air conditioner consumes 0.793 kWh and let's hypothetically assume that 1kW in 1 hour is 48 cents that means it consumes 33 cents in 1 hour which is \$2.64 in 8 hour period, \$18.48 per week and \$73.92 in a month?

Thanks.

#2
10-10-11, 03:41 PM
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Cooling will depend on many factors such as building construction, windows, insulation, etc. This is mainly a US site, so we may not be 100% familiar with construction techniques used in Israel. The more information you can give the better. I'm sure we can help.

Your calculations on energy usage and cost is correct.

#3
10-10-11, 06:11 PM
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Boris -

I assume you are dealing with metric dimensions and use CONTINUOUSLY operation.

Since most of the construction in Israel may be heavyweight walls and floors, continuous operation would not be needed. If it is lightweight (wood, steel stud) there is no thermal storage capacity (heat capacity), so the peak requirements would control and result in a larger unit required.

As Tolyn said, the conversions seem to be correct, but I an an amateur in that area.

Dick

#4
10-11-11, 02:05 AM
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Not 100% sure but apartment i live in has 2 layer walls. 1st is brick and second is concrete which is to lessen the heat that sun causes.

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