More preferable Fuel

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Jarif Mahbub Srabon
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More preferable Fuel

Unread post by Jarif Mahbub Srabon » Thu Oct 18, 2012 6:38 am

$C H_{4} $ or $ C_{4} $ $ H_{10} $ , which fuel is more preferable ?

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nafistiham
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Re: More preferable Fuel

Unread post by nafistiham » Thu Oct 18, 2012 1:53 pm

$CH_{4}$
because, that emits less carbon.
Though, $C_{4}H_{10}$ can give us more power, it will also give us harmful waste. which is both wastage of power and threatening to the environment.
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Tahmid Hasan
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Re: More preferable Fuel

Unread post by Tahmid Hasan » Thu Oct 18, 2012 5:43 pm

nafistiham wrote:$CH_{4}$
because, that emits less carbon.
Though, $C_{4}H_{10}$ can give us more power, it will also give us harmful waste. which is both wastage of power and threatening to the environment.
But $C_4H_{10}$ is easier to compress than $CH_4$ because of its liquid state. That is why it is used in households.
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sowmitra
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Re: More preferable Fuel

Unread post by sowmitra » Thu Oct 18, 2012 11:11 pm

Tahmid Hasan wrote:But $C_4H_{10}$ is easier to compress than $CH_4$ because of its liquid state. That is why it is used in households.
As far as I knew, $CH_4$(Methane) is used in households as stove-gas, not $C_4H_{10}$(Butane).
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*Mahi*
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Re: More preferable Fuel

Unread post by *Mahi* » Fri Oct 19, 2012 12:45 pm

sowmitra wrote:As far as I knew, $CH_4$(Methane) is used in households as stove-gas, not $C_4H_{10}$(Butane).
Methane is the general gas supplied by gas lines, and butane is the cylinderized LP gas used wherever gas line is not available.
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SMMamun
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Re: More preferable Fuel

Unread post by SMMamun » Fri Oct 19, 2012 6:11 pm

About the 94-98% of the natural gas in Bangladesh is methane. So, it is quite understood why we have methane supplied through the gas transmission lines. But the gas we use in households, called the liquefied petroleum gas (LPG), is mainly propane, butane, or a combination of them.

But why propane or butane then, rather than methane?
1. Propane and butane are among the leftovers in the other 2-6% of our natural gas. If we do not use them, they are mere wastage, which was the case a decade ago.
2. Propane and butane can be liquefied only at a tiny fraction of the pressure needed to liquefy methane. This makes propane or butane especially handy to store and transport in cylinders before it is used again as a gas in the ambient temperature. For example, 270 units volume of gaseous propane turns into just 1 unit volume of liquid propane!

From calorific and combustion point of view, however, methane releases more energy per kg than propane or butane. And methane generates less amount of carbon dioxide.

Jarif Mahbub Srabon
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Re: More preferable Fuel

Unread post by Jarif Mahbub Srabon » Sat Oct 20, 2012 6:32 am

Can anyone give me a mathematical explaination?

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Re: More preferable Fuel

Unread post by sakibtanvir » Sat Oct 20, 2012 2:28 pm

Hope this will help. ;)
http://bit.ly/XCQxfT
Last edited by *Mahi* on Sat Oct 20, 2012 10:35 pm, edited 1 time in total.
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