I visited AET (Advanced Energy Technologies) by Jacksonville, Florida recently. I had to purchase several hot water tanks for a large solar thermal project I was working on nearby.
I saw that AET had many types of solar thermal panels that I had installed before. One of these type of solar panels is called a “drainback system”. This type of solar thermal configuration involves using no electric motor, and uses the natural flow of hot water into a holding tank from the solar panel.
I edited out the shakiness, so that is why the movement of my camera may seem a little “off”.
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Here is my DIY Solar and Wind book that was published on Amazon: http://www.amazon.com/gp/product/1508454310/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=1508454310&linkCode=as2&tag=erilaysyoucha-20&linkId=URNF3DPORKY4M5YR
Barnes and Noble Nook version of my DIY Solar and Wind Book:
http://www.barnesandnoble.com/w/books/1121302120?ean=2940151676939&itm=1&usri=2940151676939
This is a great book on Amazon that I would recommend you pick up to understand solar power (this is the 2013 edition and is great reading): http://www.amazon.com/gp/product/1907670289/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=1907670289&linkCode=as2&tag=erilaysyoucha-20
This is the Grape Solar Panel that I am particularly fond of (many people sending me messages):
http://www.amazon.com/gp/product/B00CAVMMMG/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00CAVMMMG&linkCode=as2&tag=erilaysyoucha-20
Post time: Feb-17-2017