On Tue, 19 Nov 2002, Eric Spletzer wrote:

> Except with Radiant heat, you're not just heating the air, you're heating
> the surfaces of the van, which won't lose their heat when you open the door.

Unfortunately, steel conducts heat pretty well.  You'll have a hard time
keeping up with all the losses to the outside, unless you spend a lot of
time insulating your van.  Do that, and you may find you don't need nearly
as complicated a heating scheme to stay comfortable.

             _ _
  __ _ _   _| | |  | David M. Brodbeck (N8SRE)              Ypsilanti, MI
 / _` | | | | | |  +-----------------------------------------------------
| (_| | |_| | | | @ cyberspace.org
 \__, |\__,_|_|_| "BSD is for people who like UNIX.  Linux is for people
 |___/             who hate Microsoft." -- Brendan Howes