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What is the temperature of the carbon dioxide gas released from combustion of wood?

If I let the gases escape directly, then only some heat is transferred by the gas to the heating drum and the rest of the heat escapes into atmosphere. If I trap the gases for some time, they will release more heat before escaping into atmosphere.

I can pass the gases through heat exchanger. if it is a standalone system, I can trap the gases in a pressure cooker type system (some gases will exit from below). If you have some other way, can do that as well.

Knowing the temperature helps me make appropriate decisions.

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  • $\begingroup$ Is what you are asking different from a furnace with a heat exchanger? $\endgroup$
    – noah
    Commented Apr 24, 2022 at 10:47
  • $\begingroup$ You're overthinking it. What you're describing is every direct-fire or open heating system which includes every combustion heater where you don't bother to install a heat exchanger. The gaseous combustion products mix with the air and all of that is used for heating. $\endgroup$
    – DKNguyen
    Commented Apr 24, 2022 at 23:03
  • $\begingroup$ @DKNguyen That sounds dangerous, I didn't even know those existed. $\endgroup$
    – noah
    Commented Apr 25, 2022 at 12:43
  • $\begingroup$ @noah Not really if the setting is correct. Not all heaters are HVAC systems and direct fired ones that are, are used more in industrial settings. Not that different from a fancy bon fire. $\endgroup$
    – DKNguyen
    Commented Apr 25, 2022 at 13:49
  • $\begingroup$ @DKNguyen Ah yeah industrial settings make more sense. I was thinking about CO and CO2 poisoning in housing arrangements. $\endgroup$
    – noah
    Commented Apr 25, 2022 at 14:02

2 Answers 2

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Of course. the device that does this is called a wood-burning stove.

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  • $\begingroup$ Don't regular wood-burning stoves usually have some type of exhaust pipe? $\endgroup$
    – noah
    Commented Apr 25, 2022 at 12:45
  • $\begingroup$ @ noah, certainly- but it acts as a heat exchanger, transferring its heat from the flue gases to the air in the room. This prevents you from being poisoned by the smoke! $\endgroup$
    – niels nielsen
    Commented Apr 25, 2022 at 17:27
  • $\begingroup$ Ah I interpreted the original question before the edits as directly using the CO2 from combustion for heating, hence my confusion. $\endgroup$
    – noah
    Commented Apr 25, 2022 at 17:42
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Found this on the net. The typical furnace outlet temperature of flue gases is usually around 1200 °C which will decreases gradually along the pathway of heat transfer, while the temperature of the flue gases going to stack is around 150 °C.

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  • $\begingroup$ Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center. $\endgroup$
    – Community Bot
    Commented Apr 25, 2022 at 13:52

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