3/8 diameter (thick wal)l rubber tubing ok?

[Wade1]

I want to run some new coils, currently I have about 500' of 3/8" (inside diameter) rubber tubing, however the walls are rather thick (1/8),

Q: is the wall thickness going to affect the energy transfer?

38rubber.jpg

[Shockah]

I want to run some new coils, currently I have about 500' of 3/8" (inside diameter) rubber tubing, however the walls are rather thick (1/8),

Q: is the wall thickness going to affect the energy transfer?

[ATTACH=CONFIG]4153[/ATTACH]

You ever drink water from a garden hose that has been sitting under the sun all day? The water is warm, sometimes hot... so rubber does transfer heat, but not as quickly or efficiently as you would expect from a pass-thru pool-heater.

Also, what is the temp rating on the hose? It looks like automotive vacuum hose, which has a very low temp rating.
If it is automotive heater hose, then it will endure the heat longer, but the UV rays might age it quickly.

[russ]

Also, what is the temp rating on the hose? It looks like automotive vacuum hose, which has a very low temp rating.
If it is automotive heater hose, then it will endure the heat longer, but the UV rays might age it quickly.

Shockah is correct - 1) It will transfer heat though a standard PBS type would probably be better - can't tell from the photo but if it is a soft, porous material it will transfer a lot less heat.

2) Is the pipe UV resistant? If not then it will not work for long

3) Temp rating is critical.

Black plastic pipe of the right type is used for DIY pool heaters - see http://rimstar.org/renewnrg/solar_po...ter_diy_fp.htm

[J.P.M.]

I want to run some new coils, currently I have about 500' of 3/8" (inside diameter) rubber tubing, however the walls are rather thick (1/8),

Q: is the wall thickness going to affect the energy transfer?

[ATTACH=CONFIG]4153[/ATTACH]

If it is rubber, probably. Rubber is a poorer conductor of most everything than are most plastics/pool collector materials. Also, it may not last too long in sunlight.