On Fri, 30 Oct 2009 14:49:38 -0700 (PDT), "
wrote:
Incidentally the problem can not be
accurately described by lump constants. The electrical analogy is a
transmission line, not a capacitor.

Dan

An accurate simulation is far more complex than any simple models
using leaky buckets, capacitors or transmission lines. Building such
a simulation that actually did show good correllation with observed
(measured) behavior in a range of buildings and climates took some
very competent senior engineers a couple of man years and a whole
bunch of programming.