Ceiling Voids in Overheating Models

[RossThompson87]

Hi,

I was just wandering if people represent ceiling voids as separate zones when performing overheating analysis?

I understand that in the EPC conventions ceiling voids get swallowed into the zone below, but is this the right approach for overheating?

I am concerned the volume of the room isn't accurately represented, and this may have a significant effect.

Ross

[Complex Potential]

My rule for this is quite simple:

If it is a large/deep ceiling void then model it as a seperate zone. If it is a small ceiling void then it is normally fine to be absorbed into the ceiling construction.

Of course, with internal volumes on you should be able to absorb the void into the ceiling construction and preserve the occupied room's correct volume but internal volumes can be difficult to apply in all cases.

CP