More reason to have butane on the farm!

While researching the uses of butane, I found this wonderful nugget:

Improved Yields for Greenhouses

Butane is favoured, over propane, for use in greenhouses.

It provides both heat and enriches the atmosphere with CO2, which aids in plant growth.

While both propane and butane are environmentally friendly fuels, butane does have an extra carbon atom (C4H10 vs C3H8) that results in ⅓ more CO2 when burned.

Improved yields make it the preferred choice for greenhouse use.

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You can also put a butane/propane+oxygen down mole/gopher holes with some sort of ignition source and kill the fuckers.

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I started laughing the moment I pressed play

If you burn the same moles of gas butane would produce more CO2.
However, typically gas gets sold by the pound.

Molecular weights:
Propane: 44.1 g/m
Butane: 58.1 g/m
CO2 = 44.01 g/m

1 pounds is approx 454g.
Propane: 454/44.1=10.3 M/ pound
Butane: = 454/58.1=7.8 M/pound
Propane = 3 carbons = 3x CO2 in complete combustion = 3x 10.3M x 44.0 = 1359.6 g CO2/ LB
Butane = 4 carbons = 4x CO2 in complete combustion = 4x 7.8M x 44.0 = 1372.8g / LB

So yes, butane gives more, but only about 1% when compared to propane.
Not sure about cost, but if butane is only a fraction more expensive then propane per lb, it would not make sense to use butane.

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