Pump for DIY solar heater

Waz208

New member
Apr 25, 2021
3
N. Idaho
Hi all,

New here. Have seen a lot of information about making a solar heater from irrigation tubing. I'm going to use a 4x8 piece of plywood With 2 Coils of irrigation tubing approximately 4 feet in diameter, next to each other on the plywood which will all be painted black.

From everything I’ve read regarding Thermo dynamics it seems as though you want a fairly good water flow moving through the tubing, not a very slow rate of water.

my pool is a 3500 gallon pool and I am trying to determine what size and type of pump to use to get a proper flow rate for the best possible raising of the pool temperature.

can anybody give me any suggestions. I will probably be using between 400 and 500 feet of half inch black irrigation tubing.

I am not sure whether to use a submersible pump or other type of Pump either.

Thank you!
Steve

N Idaho
 

chiefwej

LifeTime Supporter
TFP Guide
Jun 12, 2011
3,626
Tucson
DIY solar systems are seldom worth the cost and effort. Far better to buy some proper solar panels, and go from there.
 

Waz208

New member
Apr 25, 2021
3
N. Idaho
DIY solar systems are seldom worth the cost and effort. Far better to buy some proper solar panels, and go from there.

Thank you.. the “solar panels” I’m seeing such as the intex 47x47 mats or the sun heater S120U all seem to consist of the same type of system as the type I am building, with possibly even less diameter and length of tubing for more money.

Are you talking about some type of higher end solar systems?

Thank You,
Steve

 

Waz208

New member
Apr 25, 2021
3
N. Idaho
Thank you for the suggestion.

I guess my original question still applies though. What kind/size pump would I want?

from my limited knowledge of thermodynamics I want a fairly good rate to turn over more water at a less high temperature vs less water at a higher temperature.

Thank you!
Steve
 

willygee

Well-known member
Aug 24, 2020
79
central fla
Pool Size
10000
Surface
Plaster
Chlorine
Liquid Chlorine
Was talking to my local ACE store buddy that has a pool...i thought he said his 10x7 solar panel is plumbed in to his main Pentair variable speed. Here in fla his pool is 88 and ours (no solar yet) is 79.1 degrees.
 

DocEric

Member
Aug 4, 2019
9
Indianapolis, IN
Pool Size
13000
Surface
Fiberglass
Chlorine
Liquid Chlorine
I just screw the end of my homemade solar heater into one of the eyeball ports from my filter and let it run filtered water through it and back into the pool.