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Old 06-23-2013, 08:08 PM   #46
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Simple pool solar heater


Go ahead and explain how its piped in Mike ..for the benefit of others who wish to capture free heat

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Old 06-24-2013, 10:46 PM   #47
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Here is a simple explanation of the heater piping--

on the main outlet pipe from the pump--you need a T-then a full port ball valve--then another T--

Add a shut off valve and male hose fitting to the first T
Add a shut off valve and a female hose fitting to the second T

Attach the hose ends from the heater to the appropriate fittings on the Ts--open all three valves--and fire up the pump--

in this position very little water will flow through the heater---closing the center valve part way will force more water to go through the heater---

Hose bibs can be used on the Ts--but you will need to buy a double female fitting in order to hook in the male end of the hose.
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Old 06-26-2013, 12:27 PM   #48
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This should be moved to the Project thread. I'm definitely doing this, maybe toward end of summer, but I think I want to skip the glass for fear one of the kids will put a foot through it. I'm sure I will miss out on the added benefit of greenhouse heating without the glass but it's just not worth the risk.
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Old 06-26-2013, 01:40 PM   #49
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Jim:

I had the exact same fear. Rough and tumble boys with their crazy energy and flying objects.
That's why you use an old sliding door with its tempered glass. It breaks into little safety squares.
In fact, I had someone demonstrate how difficult it is to break one. It takes a couple of really strong wacks with a sledge to get it to crack. It definitely does not break into sharp shards
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Old 09-05-2013, 09:00 PM   #50
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Creeper, how did this heater work for you this summer?
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Old 09-06-2013, 12:22 PM   #51
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Quote:
Originally Posted by oh'mike View Post
I made one ,many years back,along those lines--

Plywood back---black garden hose--2x4 frame---and an old patio door.

It got so hot that I had to add a mixing valve set up so all the pool water did not enter the heater.

Worked for years ---it was placed on the ground facing the sun and I used 2x4 props to angle it up ---

To secure the hose to the backing--I drilled holes and used nylon zip ties.
Great idea. Simple. But it looses a lot of heat in the very hot water at the outlet. If you increase the flow, the total BTU collected is MORE, because the water is not so hot that it radiates away the heat (which you discovered it does at night) The water might only be a few degrees warmer, but the flow is much greater.
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Old 09-06-2013, 08:36 PM   #52
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I've been checking out a lot of videos lately. Some people use garden hoses but others use black PVC irrigation hose which is very cheap to buy. It seems to me that the PVC might be more vulnerable to temperature changes that the garden hose which is designed to be exposed to all types of weather.

There are others that sandwich 1 inch foam insylation between two plywood sheets, have spray painted black aluminum flashing behind the hose to improve the collecting system. I wonder if that might not be overkill.

I'm definately going to do one of these for next year if I can find the time.
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Old 09-06-2013, 09:09 PM   #53
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They work well----keep it simple and inexpensive---the one I made was in use for many years---

Start looking for a retired patio door.

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