Cold Radiators

[happyflyer]

It's very clever indeed...I learned a lot yesterday...I'm thinking of becoming Tony's apprentice!
Tony is an inspiration!

Thanks Jules,


Just another day at the office, I can't imaging helping anyone better, hope you have happier times ahead now the heating sorted.


Tony

 

[doitmyself]

For what reason would any one want pipe TBOE, that is remnants of the old one pipe system, long forgotten here

Except by the guys who wrote BS EN442 for measuring the output of rads, who specify TBSE when measuring! There's only about 2% difference between the three connection methods and TBSE is the best.

 

[JuliusG]

Happy flyer,
I'm was just making suggestions. I'm sorry but I disagree, TBOE is still the most efficient way to pipe a radiator regardless of whether it's a one pipe system or not. As it gives a better spread of heat across the radiator. Perhaps not seen in most modern homes but in industrial and commercial buildings are still occasionally piped this way. I piped radiators in college that way and I've worked in modern buildings piped that way. If you can increase heat output with piping arrangement, perhaps you can reduce heat emitter size?

 

[Killy Bing]

Except by the guys who wrote BS EN442 for measuring the output of rads, who specify TBSE when measuring! There's only about 2% difference between the three connection methods and TBSE is the best.

Isnt it tboe? Tbse causes the heat to run down one side and not circulate within the rad.
tboe causes it to run across

 

[JuliusG]

I agree with you 1King55, I was always told that TBOE had the highest efficiency, I would say that TBSE would have the least of the three.

 

[happyflyer]

You chaps are right experiments show that there is approx 2% better output if you don't use BBOE, but pray tell who does have a pipe running up the side of a radiator to the valve, another point if you do this and add a thermostatic valve the heat convected up from the stand pipe will prematurely shut down the valve, see if you can find a glossy rad brochure with TBOE connections.

Tony

 

[JuliusG]

Incorrect happy flyer, you fit the thermostatic radiator valve horizontally for exactly that reason. The phial in the valve hangs clear of the pipe and so isn't tricked by the heat from the pipe. If you were to fit the valve vertically you would be correct (which is a common mistake). As to whole has a pipe up the side of their radiator, the answer to that would be people looking to get max efficiency out of their radiators.

 

[JuliusG]

http://www.stelrad.com/uk/docs/elite_technical_info.pdf


Page marked 30 right, hand side, third paragraph down

 

[Killy Bing]

Ive done the rads in my parents house tboe. For one its more efficiant and also easier to get the rad off.

 

[happyflyer]

They are talking commercial, and you are right and forgot to add if you fit the TRV with the head horizontally you will negate the convention current up the pipe, another alternative is to use a remote capillary, but all this costly and messy, and they can get damage easily, commercially we tend to have a single zone valve controlled by a BMS and a room sensor, usually with a 3 Deg C adjust band 1.5 up and 1.5 down from agreed set points.

Owning and operating commercial HVAC system is expensive and maintenance must be taken into consideration too, in a school there is now a tenancy not to install radiators with TRV, they get damaged and messed with, UFH is pride of place no one can fiddle and even quality bespoke dwellings do use radiators.

I have designed 6 bespoke house in the past 10 years and not one radiator anywhere, the spec building will take some time to catch up but I think they will.

We have in recent years seen power sockets lift up higher, you could put the rad valve TBOE so people don't need to bend down, I have electronic rad valves on my system, don't need to bend down, once they are set you never need to adjust them again, extremely accurate temp control, they even make wireless TRV and the World moves on, as for 2% extra output using TBOE we will need the tweak the ABV or use the next size boiler up one. :bigcry:

Tony