[Greenbuilding] Barra system

[Paul Newby]

Hi all,

Anyone know anything about the 'Barra system' - a
brief description at http://en.wikipedia.org/wiki/Barra_system ?

"Barra's are said to be a lot more comfortable than other passive solar 
houses, with more uniform north-south temp distribution. Many successful 
systems were built in Europe, but Barra seems fairly unknown elsewhere."

The latter assertion certainly seems to be true...

Thanks,
Paul N.