On Mon, 05 Dec 2005 23:20:12 GMT, "Leo Lichtman"
wrote:


"Rex B" wrote: (clip) A couple of 500W halogen worklights over the work
area put out quite a bit of radiant heat.
^^^^^^^^^^^^^^^^^
Yep. Total energy added to the room is 1 kw. But, at the current cost of
electricity (and expected to go up) that can add substantially to your
electric bill. Whatever form of heat you end up getting, consider this
also: most garages have no ceiling, so the heat rises, and it takes a lot
extra before you get any benefit down where you are standing. If this is
true of your shop, you could get a lot of benefit by installing any kind of
fan that pulls air downward toward the floor. I have seen people use a
vertical duct taking suction at the top and discharging near the floor.


Ive made several of these, of various sizes, using black or blue PVC
pipe, and a couple muffin fans from computer equipment. Sucks it in at
the top, and blows it out at the bottom from various ports. The
bigger the pipe the better, along with as much suck as you can get. I
even made one up for the RV I live in during the week. Its only a 6'
ceiling..but really really makes a difference when it gets cold
outside. Not much insulation in an old travel trailer.

Gunner

"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner