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Coorsman777
25-10-2012, 12:52 PM
Does anyone know of a good calculation for BTUH to KWH? I have found some calcs that say .29 KWH per MBTU. NOt sure how accurate this is. A good calc will help me figure enrgy savings when I am asking for funding for projects.

Teuria
25-10-2012, 02:28 PM
Hi

this is from ashrae handbook : Btu/h x 0.2930711 = W/h

Sandro Baptista
25-10-2012, 04:26 PM
Coorsman777, just a very important correction:

1) Btu.h?!? It doesn't exists. Btu/h exists and is the rate of energy per unit of time power.

2) Btu is already energy doesn't need be multiplied by h (time)

3) kW.h is energy. kW is power. kW/h doesn't exists...doesn't make sense

Teuria the correct answer is Btu/h x 0.2930711 = W.


Many people do this error...

Teuria
25-10-2012, 05:38 PM
Coorsman777, just a very important correction:

1) Btu.h?!? It doesn't exists. Btu/h exists and is the rate of energy per unit of time power.

2) Btu is already energy doesn't need be multiplied by h (time)

3) kW.h is energy. kW is power. kW/h doesn't exists...doesn't make sense

Teuria the correct answer is Btu/h x 0.2930711 = W.


Many people do this error...

Hi

Sorry my mistake.. ;) i don't work with I-P units :D

Btu/h x 0.2930711 = W
But 1 Btu x 0.293071 = W.h (watt-hour)

and this is again from ashrae handbook

Sandro Baptista
25-10-2012, 05:47 PM
:D No problem!

Jahangir
23-12-2012, 11:10 PM
Dear Friend,
I think it would be better to check also http://www.engineeringtoolbox.com Also.
this site is one of the best online free conversion toolbox.

Regards