Doors in SBEM

VE-SBEM for compliance and EPC generation.
ecoboost
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Doors in SBEM

Postby ecoboost » Wed Feb 26, 2014 9:23 pm

Just wondering what peoples opinion on adding doors to rooms in SBEM. I have always left them out but a colleague who does some work for me says they should be modelled. Is he correct?

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Complex Potential
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Re: Doors in SBEM

Postby Complex Potential » Thu Feb 27, 2014 9:39 am

I'd say that external doors should be modelled but I never bother with internal ones.

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JohnLloyd
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Re: Doors in SBEM

Postby JohnLloyd » Thu Feb 27, 2014 9:58 am

If you're only doing a Part L or EPC assessment then it's not required to draw internal doors; it says that in one of one of the documents somewhere (NCM Modelling Guide??).

However, if you're doing a dynamic simulation with MacroFlo for thermal comfort / overheating, adding internal doors and giving them an appropriate crack flow coefficient can give a noticeable increase to ventilation rates and air movement through your building.

ecoboost
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Re: Doors in SBEM

Postby ecoboost » Thu Feb 27, 2014 10:41 am

Thanks. I'm only interested in SBEM, always leave out internal doors, just wasn't sure about external. Assume it is only modelled for the uvalue?

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JohnLloyd
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Re: Doors in SBEM

Postby JohnLloyd » Thu Feb 27, 2014 10:48 am

You must include all external doors because the Notional building needs to use the same external door positions. That goes for both glazed doors and solid.

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Terence
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Re: Doors in SBEM

Postby Terence » Thu Feb 27, 2014 11:01 am

Just curious, but why wouldn't you model external doors? Have you previously discussed this with building control or your accreditation scheme?
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