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how much energy does my solar panel generate

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Posted by KD on March 21, 2007, 8:15 pm
 
I'd like to monitor how much energy my solar panel generates in terms of
KWh. My assumption is that I would need to monitor the actual work load by
determining the energy required to heat a know volume of water on the tank
through a know temp rise. This should take into account the water already
used or being used. Any other ideas or suggestions? Is there equipment I can
buy that will do this for me?



Posted by Christian Kaiser on March 22, 2007, 10:35 am
 
Here at my place, I know the flow of the water that heats up the storage, as
well as the temperatur of that water entering, and the temp of the water
leaving the storage. So I can calculate the energy transferred into the
storage (temp diff times heat capacity times mass per hour...).

Buy a flow meter and two temperature devices, and put everything together
using a microprocessor and some hours of work ;-)

Christian



Posted by DJ on March 22, 2007, 11:14 am
 
Yep, one of these would do it nicely.

http://thermomax.com/Solar_Controller_BTU_Meter.php

You tell it the flowrate, it tells you the kWh.

DJ



Posted by nicksanspam on March 22, 2007, 12:55 pm
 

And if we want to measure the flow rate automatically?

Nick


Posted by Christian Kaiser on March 23, 2007, 6:59 am
 Insert a flow rate meter into a tube.

Christian



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