Dear all,

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.

Thanking in advance.

Regards,
Mahbubul Muttakin