home made pool heater

Electric heaters, gas heaters, heat pumps,
solar heaters, geothermal heating, solar pool
covers and wood-burning pool heating equipment.
duraleigh
Swimming Pool Wizard
Swimming Pool Wizard
Posts: 82
Joined: Sat 07 Aug, 2010 23:26
My Pool: 24X52 DIY Concrete and liner
Location: Raleigh NC

home made pool heater

Postby duraleigh » Thu 26 Aug, 2010 23:06

Correct?
I don't know. I do suspect it will be very difficult to produce something as efficient as Fafco or other solar providers make......just a guess.


24x52 DIY concrete block and liner
1.5HP pump 925lb sand filter
http://www.tftestkits.net
jjboods
Pool Enthusiast
Pool Enthusiast
Posts: 11
Joined: Tue 15 May, 2007 21:58

home made pool heater

Postby jjboods » Fri 27 Aug, 2010 07:39

I'm not necessarily comparing heating efficiency. But based on pure physics/flow dynamics, shouldn't a similarly sized panel with large tubes/pipes increase flow and reduce PSI?
jjboods
Pool Enthusiast
Pool Enthusiast
Posts: 11
Joined: Tue 15 May, 2007 21:58

home made pool heater

Postby jjboods » Thu 09 Sep, 2010 09:17

I have been looking at Fafco's Sungrabber. Is there any reason to pay $25 for their add on kit when I can buy 2 fernco couplers at home depot for $8?
duraleigh
Swimming Pool Wizard
Swimming Pool Wizard
Posts: 82
Joined: Sat 07 Aug, 2010 23:26
My Pool: 24X52 DIY Concrete and liner
Location: Raleigh NC

home made pool heater

Postby duraleigh » Thu 09 Sep, 2010 09:55

I have no idea but perhaps Fafco could provide some reasons why theirs is better. When I was persuing this a year ago, I found them to be quite helpful.
24x52 DIY concrete block and liner
1.5HP pump 925lb sand filter
http://www.tftestkits.net
lbridges
Swimming Pool Pro
Swimming Pool Pro
Posts: 119
Joined: Sat 05 Dec, 2009 17:25
My Pool: Geometric 16K gal shotcrete w/exposed aggregate; Pentair EasyTouch w/wireless, 2 Intellibrites, VS-3050 pump, C&C 200 Filter, IC-40 SWG; Heliocol solar. Rocky's reel
Location: Space Coast, Florida

home made pool heater

Postby lbridges » Thu 09 Sep, 2010 13:50

jjboods wrote:I'm not necessarily comparing heating efficiency. But based on pure physics/flow dynamics, shouldn't a similarly sized panel with large tubes/pipes increase flow and reduce PSI?


As a physicist, I respond yes, but...

For heating you should be more concerned about heat transfer efficiency than flow. Pushing 10gpm through the typical 4X12 foot, in-ground pool style FAFCO panel is less heat efficient than pushing 5GPM through the same panel.
bodypuncher

home made pool heater

Postby bodypuncher » Mon 13 Sep, 2010 10:13

My FAFCO is a few seasons old and springs leaks way too easily. I suppose if you roof mount it and leave it there it is OK. At the end of each season, unrolling and rolling it, and handling it to store it, puts dents, nicks etc on it. A few times it has sprung leaks. It is large and clumsy to roll up again and put the belt around it for carrying and storing. I barely brushed against a golf ball size rock hidding in the grass and it leaked. I'm about ready to "retire" it and go with a home made black hose model.

FAFCO's design works very well, despite the durability issues. It works without need to accommodate pressure/flow. I think they do that by calculating the flow area of the little pipes to, cumulatively, match the regular inlet and outlet of the pump and pool. I've seen some DIY'ers branch off into larger flow areas and this, of course, drops pressure. So I think trying to keep the flow area the same (reduce diameters when branching into parallel lines) is the key.
Guest

home made pool heater

Postby Guest » Sat 19 Feb, 2011 09:42

colin wrote:Can anyone give suggestions to a home made pool heater using black pipe on a roof. What size pipe should I use to maintain proper pressure and not to over work my pump? Any suggestions would be great

Thanks
Guest

home made pool heater

Postby Guest » Thu 09 Jun, 2011 15:54

:D Can those of you who ordered tell me what pump you ordered from HARBOR FREIGHT? Thanks!
thepoolzone
Pool Enthusiast
Pool Enthusiast
Posts: 10
Joined: Mon 13 Jun, 2011 14:38
My Pool: My pool is 18 X 36 inground, vinyl. I have a sand filter that I recently replaced with glass media. Sparkling clear and about 80 degrees today!
Location: Altanta GA

home made pool heater

Postby thepoolzone » Wed 15 Jun, 2011 23:02

I have some experience with the solar panels that are sold in the market. They are polypropelene and they have a system of 1 1/2" diameter tubes on them. Some models have baffles in them that obstructs the water from going through the network of tubes too easily. On the top and bottom, there is a header tube which feeds the water to the smaller tubes. You lay the "panel" consisting of approx 36 rows of tubes out in the son on a flat surface such as the ground and then put your return pool line on the outlet side of the "header tube" and then connect the output of your filter to go to the input Header tube. They sell a very simple diverter valve that you put in between the panel and the pool pump so you may close it on a coudy day for instance and divert the water from the filter to the pool, by passing the panel.

They can raise the temp of your pool about 10 degrees so it's worth it!

Good luck!
The Pool Girl!
www.thepoolzone.com
Jd

home made pool heater

Postby Jd » Wed 29 Jun, 2011 16:15

Question: Looking to build my own solar heater on my garage roof (above my 20x40 pool 1.5hp pump).

I was initially thinking using long PVC pipes run back and forth (black ones or white ones painted flat black). But seeing that most seem to mention coils, not sure which would be better. Someone mentioned in a reply back a few pages that PVC would be better so I can only assume PVC would be in straight sections.

Also since my current piping is 1.5", I am assuming I want to stay close to that so either 1.5" or 1" (tee'd)?

I'm north (boston) and want to get the most out of the roof area. I also figure the straight pipes would be easier to drain, but not sure if the turns at each end would put more pressure on the pump.

I am thinking using flex hose at the ends and rather than a quick turn have it go every other row. So the water would feed into top row, then skip down a two rows because of bend in pipe, then down two more rows, and so forth. Then the other "T" would do the same but starting on the skipped row. This would make the bend in the turns less severe hopefully putting less pressure on the pump. This would fill in the whole section of the roof using as much space as possible.

Thoughts?

Return to “Solar & Pool Heaters”

Who is online at the Pool Help Forum

Users browsing this forum: No registered users and 1 guest