Triple panel radiator

[ajlelectronics]

Fill the system with Mercury instead of water then you can run the rads up to 356.7°c

Neat Glycol aka Evans coolant will allow 160C if I am to be equally silly.

 

[Justme]

As you might have noticed in the isocyanate fogging thread, if I know what I am talking about from personal experience I give the answer once, then disengage when argued with. It just isn't worth the effort to have a battle of wits when your opponent is clearly unarmed. Reasoned discussion and difference of OPINION are a totally different matter of course.

One of the threads I have not read yet.
Great idea must try harder to do it but some how I get sucked in to the void.

 

[Justme]

Neat Glycol aka Evans coolant will allow 160C if I am to be equally silly.

On that point. I am considering using OAT (or if suitable the cheaper blue stuff) coolant in a central heating system in a static caravan to prevent winter freezing up as the pipes are underneath. They will be insulated but I dont think that would be enough with standard central heating additives.
The hot/cold pipes will be getting heat trace & insulation fitted which has worked before for my outside pipes.

 

[ajlelectronics]

On that point. I am considering using OAT (or if suitable the cheaper blue stuff) coolant in a central heating system in a static caravan to prevent winter freezing up as the pipes are underneath. They will be insulated but I dont think that would be enough with standard central heating additives.
The hot/cold pipes will be getting heat trace & insulation fitted which has worked before for my outside pipes.

Bear in mind that OAT is corrosive to solder and many soft metals likely to be found in an older system. Bluecol would be a safer option, or even the aforementioned Evans coolant if you can afford it.

 

[Kayos]

On that point. I am considering using OAT (or if suitable the cheaper blue stuff) coolant in a central heating system in a static caravan to prevent winter freezing up as the pipes are underneath. They will be insulated but I dont think that would be enough with standard central heating additives.
The hot/cold pipes will be getting heat trace & insulation fitted which has worked before for my outside pipes.

Just get the proper central heating stuff, its cheap enough

 

[Mikes]

Adding glycol has an adverse effect on the specific heat transfer of water so would down-rate the heat output.

 

[Justme]

Bear in mind that OAT is corrosive to solder and many soft metals likely to be found in an older system. Bluecol would be a safer option, or even the aforementioned Evans coolant if you can afford it.

Its an all new system & no plan to solder any parts so unless the ali boiler has solder thats not an issue but thanks for mentioning it.
I do have some solar coolant / antifreeze concentrate (ethylene glycol) but from memory it was very costly & I dont have much.

I need to try to work out the volume of the system made up of 5 600x600 doubles 1 500x600 double & a 400x1200 towel rad.
Total 15mm plastic barrier pipe work will be less than 30m.

 

[Justme]

Just get the proper central heating stuff, its cheap enough

Do they give enough frost protection?

EDIT TO ADD
Ok something like this then?

BES.co.uk | Next Day Delivery On 15,000 + Plumbing Supplies

Order Fernox HP-5c Concentrated Heat Transfer Fluid and other system fluid online at BES.co.uk. Low Prices, Free Next Day Delivery Available, 15k Plus Products in stock P/N: 24422

www.bes.co.uk

 

[ajlelectronics]

Adding glycol has an adverse effect on the specific heat transfer of water so would down-rate the heat output.

It certainly does, the very best coolant is plain water of course and why 25-30% concentrations are the norm in vehicle cooling systems.

 

[brightspark]

Do they give enough frost protection?

fit a frost stat

 

[Justme]

fit a frost stat

Dont think that would cover external pipes under the static.
Or could make the heating run all the time if its below 0c out.

The bathroom would melt lol with the only non thermostat valve rad.

 

[Mikes]

Fit a bit of trace heating tape before the insulation. Only uses a few Watts of power. If you want belt and braces, fit a frost stat to bring just the pump on as a first stage and another set slightly lower to then bring the boiler on.

 

[Justme]

Fit a bit of trace heating tape before the insulation. Only uses a few Watts of power. If you want belt and braces, fit a frost stat to bring just the pump on as a first stage and another set slightly lower to then bring the boiler on.

We are planning on heat trace on all the non heating pipes but assumed antifreeze would be an easier / better solution for the heating system itself.
I think its 15w per m from memory & self regulating.