questions about solar powered circulator pump for solar hot water system

Posted by Tom Mayrand on May 19, 2008, 01:08:42 PM

Re: questions about solar powered circulator pump for solar hot water system (Reply #5)
Jerry, make sure you take the height of the panels with respect to the tank into consideration if you plan on using an El Cid pump. I believe it is rated for a head of only 3 ft. (Great for a radiant heat zone at the same level as the tank.) Here in the NE area, pumps such as a Grundfos or Taco are used in closed loop systems...
 

Posted by Jerry Klinken on May 20, 2008, 04:07:37 AM

Re: questions about solar powered circulator pump for solar hot water system (Reply #6)
Tom, thanks for the feedback.  After further research on the subject, I'm seriously thinking about going with the Velux hot water system that has just recently been introduced into the US. I've read that these systems have been used in Europe for years. Aesthetically, they are perfect for the front of a house because they look just like skylights, and the SRCC rating is very good. Anyone have any experience with the Velux system? (I think I'll start another post)
 

Posted by Barry Horn on July 04, 2008, 02:06:10 PM

Re: questions about solar powered circulator pump for solar hot water system (Reply #7)
Hi I,m new to this forum, I just wanted to intoduce you to a different type of system that doesn't require a pump, glycol, or a seconday tank within your house.  go to www.greenenergyinnovations.ca
 

Posted by Jerry Klinken on July 05, 2008, 08:09:28 AM

Re: questions about solar powered circulator pump for solar hot water system (Reply #8)
Barry, thanks for the link.  I've seen these types of systems but they aren't a good fit for the front roof of a house where I'm installing. As a matter of fact, I've given up on the evacuated tubes in favor of flat panels for aesthetics reasons only.  I’ve decided to go with a German-made Schuco system with 4 panels and a dual transfer tank – the extra transfer to heat my hot tub.  The Velux system that I was looking at didn't support dual transfers - the company didn't recommend but I never did find out why.
 

Posted by Tom Mayrand on July 05, 2008, 04:33:15 PM

Re: questions about solar powered circulator pump for solar hot water system (Reply #9)
Jerry, before you make your expensive purchase from the company you mention, check out the pricing here at the Alternative Energy Store for your panels and controller. Then check at your local plumbing supply for a double heat exchanger tank and other related plumbing materials needed. I think you will find that you can purchase and install a complete system for the price of purchasing only half the components needed from the source you are considering. At least then all the components will be locally purchased and easily replaced, rather than trying to deal with an overseas company, just in case anything is missing or goes wrong. Of course, check with your installer to make sure he is okay with your purchases or just hire an experienced plumber to help you with your purchases and/or installation.
« Last Edit: July 05, 2008, 04:37:53 PM by Tom Mayrand »
 
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