kilowatt per hour

[Jraef]

Shucks. Now I am going to have to admit this error at my next meeting of the EDA (Engineers Against Dyslexia).

...or as they (we) would abbreviate it, DAE :roll:

 

[weressl]

...or as they (we) would abbreviate it, DAE :roll:

Are you a Dadaist?

 

[mivey]

Are you a Dadaist?

"e" eht ffo tfel uoy kniht I tub eb thgim eH

 

[Texass]

kilowatt-hour (kWh) is a unit of Power. 1 kilowatt-hour means that it will use (or transfer) one kilowatt every hour. One kilowatt is the power of one thousand joules (J) per second (s). the h in kWh basically signifies just the alternative time unit used.

If you really want to know what the conversion for kWh to kW...
1 kWh = 0.000277777...kW
1 kW = 3600 kWh


1 kW = 1 kW consistent for 1 hour, or 1 kWh
1 kW = 1000 J / s = 1 kJ / s
1 kWh = 1000 J / h = 3.6 kJ / h

 

[jghrist]

kilowatt-hour (kWh) is a unit of Power. 1 kilowatt-hour means that it will use (or transfer) one kilowatt every hour. One kilowatt is the power of one thousand joules (J) per second (s). the h in kWh basically signifies just the alternative time unit used.

If you really want to know what the conversion for kWh to kW...
1 kWh = 0.000277777...kW
1 kW = 3600 kWh


1 kW = 1 kW consistent for 1 hour, or 1 kWh
1 kW = 1000 J / s = 1 kJ / s
1 kWh = 1000 J / h = 3.6 kJ / h

The kilowatt-hour (kWh) is a unit of energy not power. The kilowatt is a unit of power. The joule is a unit of energy.
1 watt = 1 joule/sec
1 W = 1 J/s
1000 W = 1 kW = 1000 J/s
1 kW?s = 1000 J = 1 kJ
1 kWh = 3600 kW?s = 3600 kJ

 

[mivey]

...the h in kWh basically signifies just the alternative time unit used...

jghrist corrected the errors in your post but you must have had something in mind that you were trying to express. I'm just curious, but I'm guessing you might have been trying to reference an hourly demand interval?

I see you are an engineer, and I'm just assuming new to the field or someone else would have probably caught you saying these things before and mentioned it.

Do you have any questions on any concepts or terminology that we might could help you with? Sometimes in school it can be like drinking from a fire hydrant but the concepts get clearer over time.

You will never stop learning and there are many members here, some engineers, some not, who know parts of this industry inside and out. These guys are a wealth of information and often can reveal perspectives that one might never think about so I encourage you to tap their knowledge.

Not picking on you, just trying to help.

 

[Texass]

yes, i'm an electrical E.I.T.

i was asked to see if the existing panelboard in a renovation project had the capacity to add on more circuits, and the only information i have is the monthly kwh for the past year. I wanted to calculate the peak and see if I added more amps to it, would the panelboard be able to support this. i don't think i can get a true answer, but any help would be appreciated.
thanks.

 

[mivey]

yes, i'm an electrical E.I.T.

i was asked to see if the existing panelboard in a renovation project had the capacity to add on more circuits, and the only information i have is the monthly kwh for the past year. I wanted to calculate the peak and see if I added more amps to it, would the panelboard be able to support this. i don't think i can get a true answer, but any help would be appreciated.
thanks.

kWh alone will not give you the answer you need. At best you can get an average demand. You will need some kind of demand reading or you will have to conduct a load count.