Generator Power Output: 17.038 KW/60 RPM - Is it 61336.8 KWH?

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Discussion Overview

The discussion revolves around the power output of a generator driven by a 2000 ft lb per second source rotating at 60 RPM. Participants are examining the interpretation of the generator's power output of 17.038 KW and its conversion to kilowatt-hours (KWH), specifically whether this value represents a total hourly production or a rate of power generation.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants assert that the generator produces 17.038 KW of power, but there is confusion about whether this is a rate or a total output over time.
  • There is a calculation proposed that suggests if 17.038 KW is sustained over an hour, it would yield 61336.8 KWH, but this interpretation is contested.
  • Others emphasize the importance of understanding the difference between kW (kilojoules per second) and kWh (kilojoules per hour), indicating that kWh is derived from multiplying kW by the number of hours.
  • Participants express uncertainty about the correct interpretation of the units and the implications for total energy output.

    • Areas of Agreement / Disagreement

    Participants do not reach a consensus on whether the generator's output should be interpreted as 17.038 KWH in one hour or if the calculation of 61336.8 KWH is valid. The discussion reflects multiple competing views on the interpretation of power and energy units.

    Contextual Notes

    There are unresolved issues regarding the definitions of power and energy in this context, as well as the assumptions underlying the calculations presented.

ENRG
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Hi everybody:

Help me out with this if you don't mind.

A 2000 ft lb per second source rotates a generator shaft at 60 RPM; It is generally agreed (not by everyone) that this produces 17.038 KW of power.

What is not clear is if this is 17.038 KW per SECOND then the total HOURLY power would be calculated : 17.038KW *60* 60= 61336.8 KWH.

Some say that the total production of this generator is 17.038 KWH (IN ONE HOUR)

What say you?
 
Last edited:
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kWH = kW * H

EDIT -- removed the confusion which then followed...
 
Last edited:
ENRG said:
A 2000 ft lb per second source rotates a generator shaft at 60 RPM; It is generally agreed (not by everyone) that this produces 17.038 KW of power.

What is not clear is if this is 17.038 KW per SECOND then the total HOURLY power would be calculated : 17.038KW *60* 60= 61336.8 KWH.

Some say that the total production of this generator is 17.038 KWH (IN ONE HOUR)

What say you?
Yikes - you have to know what a kW and a kWh are. Check the units: Since the "h" is hours, kW * h = kWh

kW is kilojoules per second, but don't let that confuse you - if you want kWh, you just need the kW and the number of hours.
 
russ_watters said:
Yikes - you have to know what a kW and a kWh are. Check the units: Since the "h" is hours, kW * h = kWh

kW is kilojoules per second, but don't let that confuse you - if you want kWh, you just need the kW and the number of hours.

Yikes is right. :-p Thanks for catching my error Russ. I'll edit my post to remove the confusion.
 
Shoot. To late to see the confusing goodies.
 
berkeman said:
Yikes is right. :-p Thanks for catching my error Russ. I'll edit my post to remove the confusion.
:rolleyes: Riiiiight...your error... um, I guess I should have read your post...
 

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