Dual Fuel Oven (Gas and Wood)

[slowfood]

Is it possible to install a gas burner into an oven or dam dangerous, Any ideas how it could/should be done? Thank's

[faz]

My concern would be the potential for the flame to extinguish but the gas to continue to come out. Most gas fired ovens have a thermocouple which detects the flame and cuts off the gas if it extinguishes. The problem I can see is that as we want to get the oven up to a really high temp, that the radiated heat could fool the thermocouple into thinking there was still a flame present, so the gas continues to flow into the oven and creates a rather large bomb.

Possible a lance rather than a true burner would be better, as the gas lines would all be external. In the steel industry this is very common. This would still leave the issue above though.

Don't post this question on Forno Bravo as every time someone does a huge shitstorm erupts!

[littlebritaly]

I understand your concerns Faz, but in practice this doesn't happen, at least in my case it didn't.

I've run an oven on propane for hundreds of hours and never had a problem.

I ran the pipes straight through the side of the oven, again no problem at all.

There's an easy way to check as well.

Get your oven up to temperature, turn off gas supply, wait 30 seconds or so, put some lit firelighter next to the burner, turn on gas.

It shouldn't light.

The radiated heat will/should not be enough to keep the thermocouple "active", they require direct heat from a flame (eg a match flame is 600c to 800c).

Propane flames are around 1900c (Need to check this, working from memory).