sizing rads for halls ?

[darkart]

Does any wise owl know the correct method i should use when measuring a radiator to fit in a hall.

I have a hallway stairs and landing and obviuosly want a rad that will heat all the above.

What measurements should i be taking to work out the btu of the rad needed as i have been told there is not set measurements needed but the area of the hall but cant see how that will give off enough heat to warm the stairs and landing.

Many thanks in advance

 

[John M]

I thought you measured up & got the # of cubic meters & looked on a chart which gave you the advised size ....... Well thats what I did anyways

As heat rises & all that I'm having a go @ putting a lil rad on the landing in a effort to keep a bit of the generated heat from the hall rad down stairs ...... Dunno if it will work ...... But as the added rad was all of £17 from Screwfix its hardly the end of the world if my theory turns out to be baloney...... Mind you ya can add another £25 to all that by the time you've put a decent TRV on it...... Even still its hardly a kings ransom...... Plus it will cover that bit of gouged wallpaper I did when tripping the light fantastic with the steps the other month ........ Loooooong story

 

[chrishutt]

There are formulae for working out the heat loss of a space, based on the area and type of external surfaces and the volume, but with halls - stairwells it's difficult to take account of the way the heat will rise up towards the upper floor, possibly leaving the hall inadequately heated.

I'd just stick in an average rad - say 1.5 kW output - and place it towards the front door and away from the stairwell (assuming a typical layout). You might want to site the room thermostat in the hall which would avoid overheating. Otherwise you'd normally have a TRV on the hall rad.

The temperature of halls and stairwells isn't as critical as for sitting rooms so it's not worth worrying about, providing you have some control to avoid overheating.

 

[darkart]

Thanks for that,

So what your saying is that i only have to measure the down stairs hall to get the rad size i need and this will be enough to heat the stair well and the landing?

Their is not enough room to fit a rad at the top of the stairs so do i calculate the hall stairs and landing area then work out the btu needed for all measurements together then size the rad accordingly ?
cheers

 

[chrishutt]

So what your saying is that i only have to measure the down stairs hall to get the rad size i need and this will be enough to heat the stair well and the landing?

Who said that?

 

[John M]

Twylight Zone

 

[Agile]

A simple way to get it roughly right would be to make a calculation based on the combined floor area of the hall and the landing.

However in practice most people just base it on the hall and rely on convection and heat spillage to heat the landling.

Tony