shalabi
Member
- Location
- Damascus Syria
Hi all
What is the difference between
KW/month and KWhour/month?
Thanks
What is the difference between
KW/month and KWhour/month?
Thanks
KWhr
- Thread starter shalabi
- Start date
- Status
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Not sure just what you may be asking but kW is power and kWhr is energy.
Does that help?
compared to other things - kW is like horsepower, kWhr is like gallons of gas.
kW/month makes no sense.
kW is power. A rate of doing work or rate using energy. A multiple of Watts.
kWh is energy. The energy used. Power times time. A steady one kW for an hour. Or 60kW for a minute and nothing for the next 59 minutes.
You pay for energy.
The nearest analogy I can think of is for a car.
MPH tells you the speed or rate at which you are travelling. It tells you nothing about the distance you have travelled. For that you also need to know the time for which you have travelled at that speed.
Kilowatt-hour/month would be the average over time of what we get billed for on monthly cycles.
I have no idea what anyone would use a kilowatt/month value for.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
for expressing larger units of energy of course
Depends on which month you are talking about though as a kW/month is sometimes 30 sometimes 31 days - then you have Feb to deal with.
One kW/month = one kw for one month:happyyes:
One kW/month is a meaningless unit. It's like miles per hour per hour or miles per hour per week.
That's what the "/" signifies. Per.
A kWmonth could perhaps be construed as a steady load of 1kW for one month. Or about 30kW for a day followed by no load for all the other days of the month.
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
"The total power generating capacity in the US is increasing at the rate of 1 megawatt per month," maybe?
Tapatalk!
Tapatalk!
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
for expressing larger units of energy of course
Depends on which month you are talking about though as a kW/month is sometimes 30 sometimes 31 days - then you have Feb to deal with.
One kW/month = one kw for one month:happyyes:
No. That would be one kW-month, not one kW/month! See my example of where the /month would actually be meaningful.
Tapatalk!
Nice one!
K8MHZ
Senior Member
- Occupation
- Electrician
Great example. kW/month means 'kilowatts each month' or 'kilowatts every month', not kilowatts for a month.
I thimk.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Now if we just knew what context the OP has seen this in maybe we could straighten him out with understanding what he may be dealing with.
K8MHZ
Senior Member
- Occupation
- Electrician
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
I feel like something went way over my head here:?Aw, ...... were not THAT bad of a group.
shalabi
Member
- Location
- Damascus Syria
Kwhr
Kwhr
Hi all
The following table is made by electrical authority in the Saudi Arabia
in order to fill in
They asked for KW/month and KWhr/month
. Power and Utility
I did not understand the difference
Please Help
Thanks
Kwhr
Hi all
The following table is made by electrical authority in the Saudi Arabia
in order to fill in
They asked for KW/month and KWhr/month
. Power and Utility
| Electricity (maximum demand) KVA/month | KW/month | kilowatt hours/month |
| Electricity High Voltage Requirement ______ Volts | 1/2/3 Phase | Diversity Factor / Power Factor |
Please Help
Thanks
K8MHZ
Senior Member
- Occupation
- Electrician
Sorry, sometimes I have a warped sense of humor. If more than two people don't get it, it's obviously my fault. If fewer, it's probably still my fault, only not obviously.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
My guess is they want to know what the expected peak demand is where they say KW/month though any time element is not necessary in this particular situation, so they can ensure they provide sufficient equipment to deliver those needs.
meternerd
Senior Member
- Location
- Athol, ID
- Occupation
- retired water & electric utility electrician, meter/relay tech
Sounds like Demand to me too....Peak KW in one month. Demand is usually measured by sampling a 15 minute window (called 15 min demand interval). If average demand for a 15 minute period is 20KW, then that amount is stored in a register. If another, larger 15 min amount comes along, the new higher demand rate is stored. The highest of the month is the amount billed, even if it was only for a short period once in the month. Seems unfair, but it's like having a V8 in your Prius. There when you need it. The utility has to provide large enough wire and transformer to allow the high demand, and that costs money. Usually only applies to large commercial customers. Sometimes "demand" customers get a lower rate on the Kwh if they are on the demand rate. Depends on the utility.
Last edited:
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
It is not "meaningless," it is merely "useless." Take a "rate" and divide it by "time" and you get "acceleration." GoldDigger had a good counter-example:
In this case, rather than calling it "acceleration," I would use the phrase "rate of load growth."
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
I suspect that the electrical authority is actually asking for the maximum peak demand that you anticipate seeing during any given month. The units should be KW, not KW/month. I think it is likely to be a simple error in translating the requirement from Arabic to English.
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