Draft

[Wolves1]

Do you get a stronger draft and wood burn quicker the colder it is outside?

 

[realstihl]

Yes and yes.

 

[Warm_in_NH]

Yep. Bigger the difference in temperature inside vs. Outside, the stronger it pulls.

So, ironically, the colder it is, the quicker the fire burns out.

 

[firefighterjake]

Yes to both answers.

 

[saskwoodburner]

Definitely.

 

[fire_man]

Pretty soon we will be getting into the dreaded "shoulder season" where the draft gets lousier and those with marginal chimneys have issues with smoke spillage and backpuffing.

 

[Wolves1]

Thank you all

 

[DougA]

Cold air is usually drier air and the shoulder season is often damper air. I think that has a lot to do with pressure since damp air is heavier (ie fog at ground level)

 

[begreen]

Cold air is denser and much heavier than warmer or mild temp air. That's why hot air rises. Dry air is also heavier than moist air. The more water vapor that is in the air, the less dense the air becomes. Think more hydrogen atoms.
http://www.weatherdudes.com/facts_display.php?fact_id=51
http://www.washingtonpost.com/blogs.../08/05/why-dry-air-is-heavier-than-humid-air/

This is also why chimneys draft better in cold weather.
http://www.woodheat.org/how-chimneys-work.html

 

[DougA]

OK, so I'm stoopid. I thought a fog was more dense but it's my brain that is in a fog and more dense.

 

[begreen]

My wife says I am in a fog half the time too. Fog usually happens where the air is colder and moisture condenses into a cloud at ground level.

 

[Rearscreen]

Are you all suggesting putting a refrigerator in the chimney?

 

[saskwoodburner]

Are you all suggesting putting a refrigerator in the chimney?

That's just silly. Use the air conditioner. Fridge is for beer I think?

 

[rsw49]

http://www.washingtonpost.com/blogs.../08/05/why-dry-air-is-heavier-than-humid-air/



Begreen, Interesting link. It has been almost 40 years since I thought of Avogadro's number or moles of a substance. Brings back some memories. Getting old as they say. I forgot how much I forgot!!

 

[Wolves1]

Can somebody please tell me how do I get the air conditioner in the chimney?

 

[Warm_in_NH]

These guys are getting close to having it figures out!

 

[saskwoodburner]

View attachment 155371

These guys are getting close to having it figures out!

All they need to do is turn that unit around, duct tape some ducts to the chimney, and she'll draft like no ones business!

 

[Wolves1]

Can someone explain to my wife that not crazy and this needs to be done.