Power conversion

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Power conversion

Postby CARA_SHEERIN » Tue Mar 27, 2007 5:25 pm

Hi,
I was wondering if it is possible to convert from KWH/day to MJ/hr?
The issue I am having is with the KWH.......
Any advice would be appreciated.
Thanks
C
CARA_SHEERIN
 
Posts: 1
Joined: Tue Mar 27, 2007 5:21 pm

Postby Guest » Tue Mar 27, 2007 6:36 pm

A Joule is 1 Ws. So a kWh is 1000 W and 3600 s which is 3.6 MJ. 3.6 MJ/day is 3.6/24 MJ/h = 0.15 MJ/h.

However, energy/time is power, so the measure would be best expressed in watts (W). 1 kWh/day is 1000/24 Wh/h = 41.67 watts.
Guest
 

Re: Power conversion

Postby Guest » Tue Mar 27, 2007 6:48 pm

CARA_SHEERIN wrote:Hi,
I was wondering if it is possible to convert from KWH/day to MJ/hr?
The issue I am having is with the KWH.......
Any advice would be appreciated.
Thanks
C


1 kWh is 1 kW for 1 hour. 1 hour = 3600 s, and 1 watt = 1 joule per second.

So the 1 kW = 1 kJ/s,

1 kWh = (1 kJ/s) x (3600s/h x 1 h) = 3.6 MJ
(the parentheses are unnecessary, but may add clarity)
Guest
 


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