My friend says it does, but I don't think it does. Anyone live in cold climate that can give me an answer?
My friend says it does, but I don't think it does. Anyone live in cold climate that can give me an answer?
Just screw in a 1000 watt bulb in every power outlet. 10-20 should do the trick. You'll be plenty warm.
Hingle McCringleberry wrote:
My friend says it does, but I don't think it does. Anyone live in cold climate that can give me an answer?
Obviously it does. Which is why all homes in new England are heated by single light bulbs.
The old lightbulbs yes. The new ones no.
Air has a specific heat of about 1 J/gK. A 400 square foot room with 10 foto ceilings therefore has 145 kg of air, which means it takes about 145 kJ to heat it up one degree celsius, which is about the smallest difference in temperature that you can actually feel.
Thus a 40-W lightbulb would take 145 kJ / 40 W = about 1 hour. So, a 40W lightbulb heats up 1 degree celcius (1.8 F) per hour, assuming perfect insulation.
The newer lightbulbs take a lot less power than 40 W though even if they're 40-W equivalent.
Hardloper wrote:
The old lightbulbs yes. The new ones no.
The newer lightbulbs take a lot less power than 40 W though even if they're 40-W equivalent.
Who wastes their money on those worthless overpriced fluorescent bulbs that give half the light and last a far shorter time than they're supposed to?
Stick with the good old incandescent bulb and you will be a lot happier. 60 watt is the optimum. I even cook with it.
I use a lightbulb in my unheated crawl space on really cold days. I use one of those cheap clip on metal lamps. Helps prevent pipe freeze by keeping the area slightly warmer. It actually works.
So, yes is the answer.
Depends on the room size.
new fangled crapola wrote:
Who wastes their money on those worthless overpriced fluorescent bulbs that give half the light and last a far shorter time than they're supposed to?
I use 7 watt led corn bulbs from Ebay and they're great.
In an extremely well insulated house you'll lose something like 0.08W per m2 per degree (Kelvin) of temperature difference through any external roof/floor/wall. And something in the region of 0.85W/(m2*K) through doors and windows.
So if we've got a very simple one-room house with 10m2 of floor, 10m2 of ceiling, 20m2 of regular wall and 4m2 of windows + door we get a total energy loss of
(40 * 0.08) + 4 * 0.85 = 6.6W/(m2*K)
So a single 40W bulb would be able to raise the temperature by about 6 degrees (C or K).
Most real houses won't be anywhere near that energy efficient, though.