window air conditioning rating Iraq

[CAPTMIKE]

How do you convert the BTU rating for window AC units to watts ,I dont have access to submittals to get the information from and need to size the service.Thanks in advance

 

[480sparky]

My conversion program shows 1 BTU/hour=0.2928104185 watts, or 1 BTU=0.2928104185 watt/hour.

 

[bob]

How do you convert the BTU rating for window AC units to watts ,I dont have access to submittals to get the information from and need to size the service.Thanks in advance

check here for actual unit specs http://www.frigidaire.com/images/documents/ProductBrochures/Room_Air_Conditioners_2007.pdf
I use 1 kva per ton.

 

[topgone]

BTU/HR to WATTS CONVERSIONS

BTU/HR to WATTS CONVERSIONS

480sparky is right!
or, to write another way:

Watts = (BTU/hr) / 3.413
Tons = (BTU?s / hr) / 12,000

 

[suemarkp]

While those numbers are correct, it doesn't work for airconditioners. They do not do a direct conversion of electricaty to heat (unlike resistance strip heaters which do).

There is an EER or COP value that tells you how much better than 3.41:1 you're doing for electricity to BTU conversions (it is typically about 3 to 1 -- or about 11000 BTU per KW). For sizing the service or branch circuits, there should be a nameplate value (preferable MCA, but RLA*1.25 would also work). If there is no nameplate, you'll have to measure the amps being drawn. Baring that, Bob's answer is close, but some units (especially newer ones) will be better and some worse.

None of this will tell you watts, because that gets into power factor. If you don't know the PF, you can't get watts (unless you have a watt meter). But you use VA for sizing wires anyway.

 

[CAPTMIKE]

window ac's in Iraq

window ac's in Iraq

I appreciate and understand all of the comments,I have found out a lot of the same information on my own research.I think the best way to calculate this is to get the actual submittals for the A/C 's and the the calc can be more realistic..Thanks