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Mahbubul,<br>
I am not sure what you mean by static and dynamic. It seems to me
that if you solve the energy out/energy in equation at each timestep
then plot the result, you would have the collector's dynamic
efficiency (in other words its efficiency at any "point" in time).
If, however, you integrate energy out and energy in before
evaluating the equation then you have an average (call it static)
efficiency for the array over the course of the simulation. <br>
<br>
Perhaps you want to see the efficiency of the collector as a
function of where you are along the length of the collector? In this
case, you would need to have a noded collector model that reported
the temperature of each collector node. In this way you could
calculate the efficiency of each collector node (using the same
equation but looking just at the energy collected by and incident on
each node of the collector instead of on the collector as a whole.<br>
Regards,<br>
David<br>
<br>
<br>
On 6/25/2012 03:24, mahbubul muttakin wrote:
<blockquote
cite="mid:CAKTfKO69Qzn9O6VwWkjwuOuUuh61HFB14Xg122DGOrmS_XMhRg@mail.gmail.com"
type="cite">Dear all,<br>
<br>
I am using flat plate as well as evacuated tube solar collector. I
want to simulate the system and find out the dynamic efficiency of
the collector, not the static one. static one is energy out/energy
in = m.Cp.(To-Ti) / GA. but due to dynamic changes of solar
radiation, it doesn't give good thermal performance of the
collector. so I want to find out the dynamic efficiency,
efficiency over time and tube length.<br>
<br>
Thanking in advance.<br>
<br>
Regards,<br>
Mahbubul Muttakin<br>
<br>
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