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How much energy does it take to make 1 gallon of gasoline?

This is a discussion on How much energy does it take to make 1 gallon of gasoline? within the Energy forums, part of the US Discussion category; One must include drilling energy, pumping, and transport from foreign sources if we are going to compare it to ethanol production which is my intent. ...


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Old 04-20-2011, 03:36 PM
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How much energy does it take to make 1 gallon of gasoline?

One must include drilling energy, pumping, and transport from foreign sources if we are going to compare it to ethanol production which is my intent.
Refining energy must also be included. But not domestic transport since that is needed for ethanol as well.
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Old 04-20-2011, 03:40 PM
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And if we want to compare costs of gas vs ethanol there will be no comparison since we have spent trillions defending oil in the ME. Not counting hundreds of billions in other forms of govt subsidies to oil security/production.
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Old 04-20-2011, 03:44 PM
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A lot more than it did when crude was seeping out of the ground in Pennsylvania. One day after all the low hanging fruit is plucked, it will exceed the energy you get from burning a gallon of gasoline, and that will herald the end of the oil age.
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Old 04-20-2011, 03:47 PM
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I am not so sure that the production does not already consume more than 100% of yield in producing gasoline.
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Old 04-20-2011, 04:46 PM
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Quote: Originally Posted by uscitizen View Post
I am not so sure that the production does not already consume more than 100% of yield in producing gasoline.
Virtually all of the energy used to produce gasoline is supplied by fuel that is a byproduct of the refining process. Diesel fuel runs generators and pumps. According to Wiki, about 46% of a barrel of crude is sold as gasoline. Seeing that oil companies also sell diesel, heavy fuel oil, tar for road surfaces and oil for lubrication, as well as byproducts used to make plastics, it would seem to me that there must be more energy produced than consumed.
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Old 04-20-2011, 04:49 PM
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Quote: Originally Posted by Ernie S. View Post
Quote: Originally Posted by uscitizen View Post
I am not so sure that the production does not already consume more than 100% of yield in producing gasoline.
Virtually all of the energy used to produce gasoline is supplied by fuel that is a byproduct of the refining process. Diesel fuel runs generators and pumps. According to Wiki, about 46% of a barrel of crude is sold as gasoline. Seeing that oil companies also sell diesel, heavy fuel oil, tar for road surfaces and oil for lubrication, as well as byproducts used to make plastics, it would seem to me that there must be more energy produced than consumed.
the refineries consume tremendous amounts of energy.
the tankers burn large amounts of bunker oil/diesel.
The drilling rigs take energy.

Why is the amojunt of energy to make ethanol readially available and not easy to find for Gasoline?
the liberal media?
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Old 04-26-2011, 09:21 AM
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Quote: Originally Posted by uscitizen View Post

the refineries consume tremendous amounts of energy.
the tankers burn large amounts of bunker oil/diesel.
The drilling rigs take energy.

Why is the amojunt of energy to make ethanol readially available and not easy to find for Gasoline?
the liberal media?
The energy consumed is 17% of the useable energy in the resulting fuel

EIA Energy Kids - Oil (petroleum)

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A 42-U.S. gallon barrel of crude oil provides slightly more than 44 gallons of petroleum products. This gain from processing the crude oil is similar to what happens to popcorn, which gets bigger after it's popped. The gain from processing is more than 6%.

One barrel of crude oil, when refined, produces about 19 gallons of finished motor gasoline, and 10 gallons of diesel, as well as other petroleum products. Most petroleum products are used to produce energy. For instance, many people across the United States use propane to heat their homes.
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Old 04-26-2011, 09:24 AM
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Kind of like asking how much coal the Chevy volt will be burning to drive on the street
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Old 04-26-2011, 09:30 AM
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Quote: Originally Posted by bripat9643 View Post
Quote: Originally Posted by uscitizen View Post

the refineries consume tremendous amounts of energy.
the tankers burn large amounts of bunker oil/diesel.
The drilling rigs take energy.

Why is the amojunt of energy to make ethanol readially available and not easy to find for Gasoline?
the liberal media?
The energy consumed is 17% of the useable energy in the resulting fuel

EIA Energy Kids - Oil (petroleum)

Quote:
A 42-U.S. gallon barrel of crude oil provides slightly more than 44 gallons of petroleum products. This gain from processing the crude oil is similar to what happens to popcorn, which gets bigger after it's popped. The gain from processing is more than 6%.

One barrel of crude oil, when refined, produces about 19 gallons of finished motor gasoline, and 10 gallons of diesel, as well as other petroleum products. Most petroleum products are used to produce energy. For instance, many people across the United States use propane to heat their homes.
Ok that is in the refining process.
How about the transport form overseas for that portion, the drilling, the pumping, etc.

Just want ing to figure it the same way some do for ethanol production.
domestic transport after refining shoudl not count as it is the same for all fuel products.
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Old 04-26-2011, 09:32 AM
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1.5 gal diesel to make 1 gal ethanol.

And this is straight from Citgo corp.

I installed all the electrical controls to blend ethanol at the loading rack,and had a long talk one day with Citgos head engineer while doing the job.
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Old 04-26-2011, 09:35 AM
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Quote: Originally Posted by chikenwing View Post
1.5 gal diesel to make 1 gal ethanol.

And this is straight from Citgo corp.

I installed all the electrical controls to blend ethanol at the loading rack,and had a long talk one day with Citgos head engineer while doing the job.
they should use biodiesel.
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Old 04-26-2011, 09:54 AM
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Quote: Originally Posted by uscitizen View Post
Quote: Originally Posted by Ernie S. View Post
Quote: Originally Posted by uscitizen View Post
I am not so sure that the production does not already consume more than 100% of yield in producing gasoline.
Virtually all of the energy used to produce gasoline is supplied by fuel that is a byproduct of the refining process. Diesel fuel runs generators and pumps. According to Wiki, about 46% of a barrel of crude is sold as gasoline. Seeing that oil companies also sell diesel, heavy fuel oil, tar for road surfaces and oil for lubrication, as well as byproducts used to make plastics, it would seem to me that there must be more energy produced than consumed.
the refineries consume tremendous amounts of energy.
the tankers burn large amounts of bunker oil/diesel.
The drilling rigs take energy.

Why is the amojunt of energy to make ethanol readially available and not easy to find for Gasoline?
the liberal media?

In comparing energy sources you can't just go by the energy to produce vs. the energy availible. The issues of "density, portablility, and reliability also come up. Density is how much energy you get out of it per unit volume, which is why gasoline is better for a car than say wood. Portability is related to density, as well as how easy it is to transfer from storage to use. This is why liquid gasoline is superior to say a solid form, like high quality coal for automotive use. Finally is reliability. This is where the ICE using gas or diesel beats out things like electrics, or solar powered cars. This includes the infrastructure required to keep you supplied with said fuel.

The issue with ethanol or biodiesel, is that unless we figure out a way to make it out of waste products, you have to grow something to make it. That needs land, lead time, and once this is done, basically similar refining techniques to make it into a fuel. I'm not dismissing ethanol/biodiesel out of hand, just worrying that the amount of land required to grow enough corn/algae/PLANT X to supplant gasoline would not be feasible.
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Old 04-26-2011, 09:56 AM
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Maybe ending the oil subsidies will effect this number?
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Old 04-26-2011, 10:00 AM
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Quote: Originally Posted by Truthmatters View Post
Maybe ending the oil subsidies will effect this number?
So gas can go from $4.00 a gallon to $6.00 a gallon?
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Old 04-26-2011, 10:08 AM
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whats the differance we already pay that in subsidies
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