In article ,
Charlie Pridham wrote:

You can't have too much ventilation in the roof and sides (bear in mind it
has to be open even when you are away)

Remember that airflow is proportional to the areas of the vents and
the difference in height between the bottom and top ones. This is
why windows opening between thigh and head height are so poor compared
with traditional top and bottom vent designs.

I did a fairly extensive search for any scientific and engineering
information on the relative requirements for the areas of top and bottom
vents, and found precisely nothing. If anyone finds anything useful, I
should be interested to hear of it.


Regards,
Nick Maclaren,
University of Cambridge Computing Service,
New Museums Site, Pembroke Street, Cambridge CB2 3QH, England.
Email:
Tel.: +44 1223 334761 Fax: +44 1223 334679