Vertical header
- Thread starter Biggles..
- Start date
The very nice picture of the pipework is not a low loss header arrangement as used/recommended by keston boilers. Give there tech dept a call and they will fax/mail you a drawing of there idea/method for a low loss header.
I'm glad you said that I thought I'd lost the plot.
Didn't look like Low Loss header to me either
Nice pipework though
B
billy bob
It is not a low loss header, it is just a flow and return header system, this is a low loss header
http://i171.photobucket.com/albums/u292/silverback_2007/DSC00884.jpg
http://i171.photobucket.com/albums/u292/silverback_2007/DSC00884.jpg
Yep that's what I call a Low Loss Header or Low Velocity Header.
Do you guys have any contacts for suppliers of manufactured LL headers?
We used to make or own a few years ago, before they became popular, but I dont have my welder contacts anymore.
Do you guys have any contacts for suppliers of manufactured LL headers?
We used to make or own a few years ago, before they became popular, but I dont have my welder contacts anymore.
Cheers, thats how we used to do them or should I say our welder did.
My then boss used to spec them up.
What did you do for design/sizes? of the vertical diameter?
Add up the cross sectional area of all F & R's and allow a bit?
or am I over simplifying it.
My then boss used to spec them up.
What did you do for design/sizes? of the vertical diameter?
Add up the cross sectional area of all F & R's and allow a bit?
or am I over simplifying it.
Its more down to flow rates, We had a chart in the office before I retired.
Lets just say too big is better than too small
B
billy bob
You obviously do not know anything, flow and return mixing in one header equals low loss header, if you look there is a flow and return going in and a flow and return coming out, what else would you call it
B
billy bob
I must admit so was I, but I think it is done internally, it incorparates a strainer internally to protect the two boilers that it is connected to, it is made by Spirovent.
billy bob wrote
A hydraulic decoupler.
Consisting of four connections (as your image shows) which allows the heating load to be distributed over several boilers giving higher operating efficiencies allowing some boilers to be switched off at part load operation.
Yes, as in the case of the low loss header it has negligible pressure drop over its length.
However with the low loss header or low pressure header system multiple secondary circuits can be connected directly to the header pipe with each secondary circuit requiring its own secondary circulation pump.
A hydraulic decoupler.
Consisting of four connections (as your image shows) which allows the heating load to be distributed over several boilers giving higher operating efficiencies allowing some boilers to be switched off at part load operation.
Yes, as in the case of the low loss header it has negligible pressure drop over its length.
However with the low loss header or low pressure header system multiple secondary circuits can be connected directly to the header pipe with each secondary circuit requiring its own secondary circulation pump.
B
billy bob
billy bob wrote
A hydraulic decoupler.
Consisting of four connections (as your image shows) which allows the heating load to be distributed over several boilers giving higher operating efficiencies allowing some boilers to be switched off at part load operation.
Yes, as in the case of the low loss header it has negligible pressure drop over its length.
However with the low loss header or low pressure header system multiple secondary circuits can be connected directly to the header pipe with each secondary circuit requiring its own secondary circulation pump.
Well I can tell you, it's a low loss header, you have been educated
You really need to look at images before you Google, there are two blanked off circuits which were for a future extension which will have its own pump or secondary circulation as you stated, I also left tappings for a third boiler to cope with the additional output
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