I thought about it when reading all the recent info on body wattage output in another thread..
What I have done is get an industrial exterior light housing...one of those with an aluminum cage and glass cover...stick in a 150 watt or whatever size bulb you want, more wattage, more heat...paint out the glass housing, black...ideally mount it under some interior cabinets down by your feet, so you get better air flow, heats the foot area and then flows out into the rest of the compartment... probably mount it off the bulkhead up near the bottom of the shelves. It won't give you a blast of heat, but when plugged in it will warm up the area fairly well...I used it on dog houses in Denver and the temps would be well below 0 and with a flap on the door...it was in the 40's in the house, insulated however...she's spoiled...Daisy would stay out all day long in it...now I don't camp in those temps...but it might be interesting to see if some of the more scientific types could run some numbers on the BTU's given off by a bulb and what effect it might have on a volume of air inside of a tear...Hey...it isn't a cure-all...but if you camp with power...it's cheaper than a propane furnace.
Pros...cheaper to run, no noise, no vent, less weight, inexpensive to do, dry heat, lower fire hazard, no risk of CO...
Cons..doesn't heat up fast, more long term heating cycle, gotta camp with power. would require more thought on installation...
I just thought it was an idea, and if any of the Mr. Science types could run some numbers on it, might be viable, and anyone that has worked with a touble light in confined spaces might just agree on this...just a thought...
