Black MDPE pipe with chlorinated swimming pool water?

[Axel]

Hi,

Does anyone out there know if black MDPE pipe is suitable for use with the high levels of chlorine found in swimming pool water?

 

[TCCHeating]

I have no experience in the swimming pool sector but I did a quick Google for you to put you out of your misery.

Google says no.

Mdpe is degraded by chlorine. Pvc or abs are the recommended materials for swimming pools.

 

[Axel]

Thanks.

Would that mean normal plastic waste pipe is OK?

 

[steve32]

Thanks.

Would that mean normal plastic waste pipe is OK?

No

 

[Axel]

So how does waste pipe compare with PVC pipe? Waste pipe is described as PVC-U
?

 

[steve32]

ABS is for pools

 

[Agile]

What exactly do you want this pipe to do?

Tony

 

[Axel]

Hi Tony!

My pool plant room is 50m from solar plant room. Need to either run high temperature heat store water to Bowman heat exchanger in pool plant room over 50m of 22mm poly pipe, or put the get exchanger in the solar plant room and run the cooler but chlorinated pool water in 35 or 50mm pipe all the way to the solar plant room from the pool plant room.

 

[Agile]

I think I would be having the pool HE at the pool and run the primary water over the 50 m.

Tony

 

[Axel]

Thanks.

Do you think a normal 15-60 circulator would suffice to push the primary water along 50mm of (suitably insulated) 22mm poly pipe (and back again!)?

 

[Agile]

With what hoped for flow and return temperatures and what power?

Easy with 50 mm of pipe!!!

 

[Axel]

m not mm!

Well half the reason is to use the pool as a heat dump to prevent excessive solar panel stagnation. No more than 10kW from solar panels at peak, heat store will divert to dump mode once it hits 80°C. Heat exchanger has much greater than 10kW transfer capacity. Was going to run pipes in a channel through concrete with expanding foam as insulation.

 

[Axel]

...whilst spring + autumn use will involve pool heating rather than heat dump purpose so any primary flow temp over 35°C will be useful if I can get it across 50mm of 22mm pipe without losing too much.

 

[Axel]

I mean 50m....!

 

[Agile]

I would expect a single pimp will be adequate but if it was not then you can always add a second in series.

But I think that a lot will depend on the heat exchanger.

The pool ones are not as good as you might hope!

Tony