warning-- it's sunday. pontification alert. "Ricky Beam" <jfbeam@gmail.com> writes:
On Sat, 02 May 2009 00:26:37 -0400, Wayne E. Bouchard <web@typo.org> wrote:
... approximation
Even an approximation is hard to make. One might think the simple math of "how much power is fed into the room" would do, but it ignores numerous factors that greatly effect the answer. I can rattle off example after example, but it's unnecessary. You'll need professionals to install the hardware, so there's no point not calling them in for a consult.
"Always listen to experts. They'll tell you what can't be done and why. Then do it." --Robert Heinlein after 1993 i stopped letting HVAC people do design work for me, either at home or at work. i've had to sign several waiver letters promising not to sue an HVAC company if the system they built to my spec failed to perform. astoundingly, not everyone "in the business" knows the difference between conduction, convection, and radiation. consult, sure, but with suspicion. same thing for power, structural, security, insurance, finance, network, hardware, software, and legal people, many of whom have never questioned their own assumptions nor those of their certification boards, state and county governments, or teachers/mentors. they don't have to live with the results ... but i do ... thus my willingness to dive deep.) YMMV. -- Paul Vixie KI6YSY