Heating output for room with Bifold doors....

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Finding a BTU calculator for a regular room is easy, but finding one for an open plan kitchen/living/diner with a 5m bifold door is tricky!

Now, let's not go into this too much and ask me all the u values of everything. I don't know them. I just want a rough idea whether the rads I'm on putting in are sufficient.

I'll briefly explain that this room is part existed building, knocked through to a brand spanking new extension with internal thermal blockwork; cavity insulation and 6" kingspan in the ceiling. Bifolds are aluminium with a pretty standard double glazed glass.

To the left of the diagram is South.

Please have a look and see if my planned 2 x 6555 btu rads and 1 x 7478 btu plinth heater are adequate :)[/img]
 
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Ok, somebody needs to help me and explain how to upload a picture first! I've uploaded to my album but I can't figure out how to get it on this thread?!
 
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just treat it as 2 or 3 separate rooms ??

if the doors are open and there is any difference in temperature they will tend to average out
 
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I'm not with you? The bifold doors lead to outside. There are no doors in the open plan.
 
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ahhh thought it was to another room
i would just put it in as a double door and 1 or 2 large windows into the calculator to give an equivalent glass area
 
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I there a BTU calculator you recommend. I just want to double check my figures. Aparantely is only need roughly 2000btu per zone. I the minute I'm planning on 6500btu per zone. Overkill? Or will it just heat it nice and quick? I know my boiler is capable heating them all (according to my plumber).
 
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