amount of heat given off by a #1141 bulb ?

Hi,

There are 12 volt heaters available. Here is one: 12 volt heater

I would add a mechanical thermostat.

I did cause 120 volt outlets to be installed in three of my storage compartments.

camper19709 wrote:
I want to get some heat into my motorhome wet bay for cold weather. There is no 120 power but there is a 12 volt light fixture. How many 12volt lights do I need to add that would equal the heat of a 100watt 120power light bulb? I want to put heat in the wet bay while boondocking using battery power. Possible? or sound crazy?

Could we have a link to the heat exchanger project?
I would like to pursue that idea myself.
Thanks,Mike

Seems you may be running your generator a lot. Perhaps a 110 volt device left in place so it supplements the heating while the batteries are being refilled.

I would separate these bulbs units as far apart as you can. In my opinion you are flirting with a possible fire hazard.

I have seen in my RV ceiling mounted light fixtures using the same bulbs how much burning of the ceiling material that the metal fixtures were attached to. This was only using one or two incandescent bulbs in close proximity to each other. This was a big reason for me going to LED lighting.

The small glass bulbs distance between the bulb and the metal socket is very close which allows the generated heat to overheat the surrounding mounting fixtures..

Being installed in a closed area such as your storage bay area may not be observed all that well and who knows what may happen over time...

I most definitely would be mounting something like this on a metal structure to safely dissipate the resulting heat from the lamps and sockets. Something on the order two-inch high U-shaped metal perhaps...

Just saying respect the amount localized heat you may be experiencing with such a project...

Also be aware 10AMPS of DC CURRENT will drain a battery rather quick... Just think how long two "LEFT ON" automotive headlights which are close to the amount of current drain will last over night.

A HYDRONIC system using your hot water heater and heat registers might be another system to think about. Something along this concept.


Install hot water baseboard heat strips like this


Using propane to keep hot water heated in a close loop does not take much propane. The hot water heater will cycle on and off to maintain heat setting...

I have been thinking about doing something like this to replace my very loud RV FURNACE...


I got this idea from a RV Install this guy did with his smaller floorplan similar to mine.


Good luck with your heating project...

Roy Ken

WyoTraveler wrote:

camper19709 wrote:
Thanks haddy1. That is exactly what I wanted to know :)

If your plan is to add more bulbs to the fixture make sure the wire size can handle the current.

I have no idea the wire size. There is one light fixture in each of the six storage compartments. There is one main switch inside and each fixture has it's own switch. I can turn all the fixtures off except for the wet bay. I was thinking of adding fixtures to the wiring of the light fixture in the wet bay. All the other fixtures would be off except for the ones in the wet bay in cold weather. Does that sound unsafe?

camper19709 wrote:
Thanks haddy1. That is exactly what I wanted to know :)

If your plan is to add more bulbs to the fixture make sure the wire size can handle the current.

Thanks haddy1. That is exactly what I wanted to know :)

An 1141 bulb is rated 18watts at 12.8 volts.

Volts X Amps = Watts

So you would need roughly 6 bulbs to equal one 100W bulb.
Those 6 bulbs would draw about 10Amps.