What's cooking?

[Garf]

Whilst cooking, yellow flame.
Finished cooking, blue flame.
No prizes or kudos available.

 

[Rocks reef]

Is that due to temperature of what you are cooking?

 

[Miami Reef]

Are you converting sodium bicarbonate into sodium carbonate?

 

[billyocean]

 

[Submerge]

Do you have an ultrasonic humidifier running?

 

[Garf]

Is that due to temperature of what you are cooking?

Certainly is.

Are you converting sodium bicarbonate into sodium carbonate?

Certainly am. The phrase I've heard far too many times in my life "That didn't take as long as I was hoping" springs to mind.

 

[Reefering1]

Whilst cooking, yellow flame.
Finished cooking, blue flame.
No prizes or kudos available.

The flame, on my propane grill, looks more orange when it's windy outside.
With a acetylene torch- the acetylene burns orange, and the flame goes blue as oxygen is added.
So my guess is something about oxygen. Maybe its being displaced by a heavier gas such as co2...
Idk what's cooking that could produce co2, but i like @Miami Reef 's answer.

 

[Garf]

The flame, on my propane grill, looks more orange when it's windy outside.
With a acetylene torch- the acetylene burns orange, and the flame goes blue as oxygen is added.
So my guess is something about oxygen. Maybe its being displaced by a heavier gas such as co2...
Idk what's cooking that could produce co2, but i like @Miami Reef 's answer.

Previously I've baked bicarb in the oven and just relied on leaving it in there long enough to release the max amount of CO2. Cooking on the hob / flame colour temperature seems like a good indicator of when it's done. I expect it's cheaper to buy some sodium carbonate from Mr Bezos though, lol.

 

[Reefering1]

Previously I've baked bicarb in the oven and just relied on leaving it in there long enough to release the max amount of CO2. Cooking on the hob / flame colour temperature seems like a good indicator of when it's done. I expect it's cheaper to buy some sodium carbonate from Mr Bezos though, lol.

I like the way you think!
Can the sodium carbonate not re absorb co2 if not sealed properly or is otherwise exposed to co2?

 

[Miami Reef]

Can the sodium carbonate not re absorb co2 if not sealed properly or is otherwise exposed to co2?

Yes, it certainly can.

I’ve tried doing it over a stovetop, but stirring it caused a cloud that hurt to inhale. lol

 

[Jamie9]

The flame color has to do with how much oxygen is mixing in. If you have a stoiciometric mixture of fuel/air it’ll tend to be blue. Add a lot more o2 than you need for the combustion and it will go yellow/orange. So with a gas stove, keep it low and slow and it’ll tend to be blue. Crank it up and/or introduce a lot of airflow (wind, exhaust fan, whatever) it’ll get orange.

 

[Garf]

I like the way you think!
Can the sodium carbonate not re absorb co2 if not sealed properly or is otherwise exposed to co2?

I think moisture is the main concern but keeping it in an old bicarb tub with a lid is ok. I'm knocking up a 50g/L mixture which is similar potency to Randy's DIY 80g/L bicarb recipe, fwiw.

 

[Randy Holmes-Farley Verified Community Expert]

FWIW, it is often sodium ion emitting light that turns flames yellow. That is why natural gas flames that start blue turn yellow when water boils over.

 

[Garf]

FWIW, it is often sodium ion emitting light that turns flames yellow. That is why natural gas flames that start blue turn yellow when water boils over.

So, this might not be indicating incomplete combustion due to the CO2, but a sodium dust? It does seem to coincide with the dry bicarbonate boiling, bubbling action.

 

[Randy Holmes-Farley Verified Community Expert]

So, this might not be indicating incomplete combustion due to the CO2, but a sodium dust? It does seem to coincide with the dry bicarbonate boiling, bubbling action.

I think that’s a possibility. Sodium is a very strong emitter of yellow in flames.

 

[Randy Holmes-Farley Verified Community Expert]

This details the sodium and other emissions:

https://en.wikipedia.org/wiki/Flame_test

 

[BeanAnimal]

Hob

When English is not English even if the English insist that they are speaking English.

 

[Rocks reef]

Previously I've baked bicarb in the oven and just relied on leaving it in there long enough to release the max amount of CO2. Cooking on the hob / flame colour temperature seems like a good indicator of when it's done. I expect it's cheaper to buy some sodium carbonate from Mr Bezos though, lol.

True, but this is more fun