Hi There
I'm trying to use unglazed solar collectors to heat an indoor swimming pool.
The pool is 1040 m2 and the total area of the solar collectors is approximately 1056 m2
Unfortunately, I am getting only 958 Gj of solar thermal energy and I should be getting 2 to 3 times that amount based on other software (Retscreen) used and also based on many other researches and literature reviews. I have tried many things (flow rate, temperature adjustments and even try some unrealistic variables like increasing the solar heated water storage tank). I have attached IDF and weather file. Can someone put me in the right direction as I have spend so much time on this and it looks like there is something wrong somewhere.
Regards
Jonathan