Solar panel installation question

[cleancloths]

Sorry Matt, but I don't buy it - In my previous life a was a chemical engineer working in plant operations. When you run in series you create higher pressure drop not lower. Further, the driving force for heat transfer is much lower at the end of the last exchanger when you run in series versus in parallel. Thus, a parallel operation will extract more heat, albiet with a lower temperature rise. Without changing any valving I could only obtain about 6gpm through the panels when in series but and running 12 gpm total when in parallel. As I mentioned in a previous post when in series (at the same point in the day - maybe 10 minutes apart) I was extracting heat at the rate of 12,000 BTU/Hr in series and 18,000 BTU/Hr when in parallel. That is a 50% increase in heat addition to the pool.

Check this link: http://www.sungrabber.net/Customer_S...20ING_2007.pdf

They suggest installing them in parallel - the way I currently have them.