How much does a cubic meter of air weigh?
 

How much does a cubic meter of air weigh?

I know a big variation depending on temperature, atmospheric pressure and height above sea level?

However, best answer please....

Oh anyone know what volume of air is required to burn 1kg of wood. I know, depends on chipped, density of water in wood etc.

Someone help out a fellow pelican trying to work something out.....

Thanks
Scott

From a psych chart:
At 70F 40% humidity - 13.5 cu. ft. per lb dry air.

1.184 kg. I looked it up. That is under standard laboratory conditions - 1 atm pressure and 25 degrees c.

more than an un-laiden swallow.

European or African?

Brilliant :D

Now how much air to burn 1kg of wood ;)

From this web site : Burning Wood for Heating

it looks like 1 kg of wood requires 14.2 kg of air, or about 12 cubic meters

is it not 14.7 x 27 = 396.9lbs? (at sea level)

A big balloon can have over a cubic foot in it, how heavy is that?

1.184 kg is about 2-1/2lbs so that can't be right. Definitely not 396.9lbs.

Edit: sorry I thought it was foot not metre. The 1.184kg could be correct.

The amount of air to burn a kg of wood will vary slightly with the type of wood, I would imagine.

How much wood would a woodchuck chuck if a woodchuck could chuck wood?

Depends on the wood and the air.

surely a wood stove wouldn't need an o2 sensor and a close loop DME controlling the air intake throttle body?

red........no blue!

Interesting. If you filled a balloon with one cubic meter of air and put it on a scale, then subtracted the weight of the balloon, you'd have your answer. In terms of "weight."

At that point, I would begin to wonder whether the "mass" of the balloon would be different from its "weight."

No, you would just have just the weight of the rubber assuming the air inside the balloon is the same density as outside. The bouyant force would cancel out the weight of the air, just like putting a water balloon in a pool.

To get mass you divide pounds by 32.174 ft/sev^2 and get slugs. To get mass from a metric scale just use the weight. It is confusing. Metric scales weigh in kilograms force, but kilograms is also a unit of mass. The SI system is a mass-length-time system but the British Gravitational or all those other silly unit systems we use are force-length-time. So we can have pounds force and pounds mass. If you are doing calcs with pounds mass just use the reading from the scale.

1 pound mass * 1 g = 1 pound force
1 slug * 1 g = 32.174 pounds force

Fantastic page, thanks. However my head is hurting.......

I am assuming the wood is perfectly dry, no excess air is required for the burning process and we are at sea level. So can you confirm for me.

To burn 1 metric tonne of wood (1000kg) requires 14,200kg of air (12,000cubic meters of air).

Does that include the fact that the wood already contains 43% oxygen?

Helpppppppppppppp

you mean a virgin swallow???

you want to be near stoich on that, eh

Does this wood float??? Ducks float...

um.... how much does it weigh, or how much mass does it have?