how much energy does it take to produce oil?
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Conventional petroleum currently has an estimated EROI of around 15 to 1 - such that for every unit of energy required to get oil to a consumer, the resulting oil contains 15 units of energy.
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Each hour 430 quintillion Joules of energy from the sun hits the Earth. That's 430 with 18 zeroes after it! In comparison, the total amount of energy that all humans use in a year is 410 quintillion Joules. For context, the average American home used 39 billion Joules of electricity in 2013.
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Here's what just one barrel of crude oil can produce: Enough liquefied gases (such as propane) to fill 12 small (14.1 ounce) cylinders for home, camping or workshop use. Enough gasoline to drive a medium-sized car (17 miles per gallon) over 280 miles.
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Alas, our bodies are not 100% efficient at converting food energy into mechanical output. But at about 25% efficiency, we're surprisingly good considering that most cars are around 20%, and that an Iowa cornfield is only about 1.5% efficient at converting incoming sunlight into chemical storage.
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The fission of 1 g of uranium or plutonium per day liberates about 1 MW. This is the energy equivalent of 3 tons of coal or about 600 gallons of fuel oil per day, which when burned produces approximately 1/4 tonne of carbon dioxide. (A tonne, or metric ton, is 1000 kg.)
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Today it takes 10 calories of fossil-fuel energy to produce one calorie of food energy.
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The total energy input to produce a liter of ethanol is 7,474 kcal. However, a liter of ethanol has an energy value of only 5,130 kcal. Based on a net energy loss of 2,344 kcal of ethanol produced, 46% more fossil energy is expended than is produced as ethanol…
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If your generator capacity is 10 megawatts, it can produce 10 megawatts each hour, or 10 MWh. Multiply the MWh figure from Step 1 by 8,760, the number of hours in a year. In this example, that would yield 87,600 MWh total annual power production. Divide the annual MWh figure from Step 2 by 1,000 to get GWh.
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The sun releases energy at a mass–energy conversion rate of 4.26 million metric tons per second, which produces the equivalent of 384.6 septillion watts (3.846×1026 W).
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A lot of water. Generating electricity from coal, oil, gas, and nuclear or hydro power involves the world's second biggest use of water after food production. Making paper is another very water-intensive process. This book required about 980 liters (260 gallons) of water to produce, or more than your morning breakfast.
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A fuel is just anything you can burn to produce energy. Most notably, petroleum oil gives you gasoline (which is known as "petrol" in countries speaking British English) and diesel fuel (used to run big trucks and trains).
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Electric Energy Electrical Energy = Power x Time. The total amount of electrical energy used depends on the total power used by all your electrical devices and the total time they are used in your home. One kilowatt hour is equal to 1000 watts of power used for one hour of time.
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['Radiant Energy: Energy produced by light waves.', 'Electrical Energy: Energy produced by electricity.', 'Sound Energy: Energy produced by sound waves.', 'Thermal Energy: Energy produced by heat.']
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Worldwide: 60 % of the electricity is generated by fossil fuels. An average of 60 % of the electricity produced in the world comes from coal and gas, i.e. fossil fuels. This means that an electric car produces nearly as much CO2 per kilometer as a petrol or diesel vehicle.
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The thermal energy produced by burning one gallon of octane using 3.8L with a density of 0.70g/mL is 126, 646kJ. Suppose a car operates so inefficiently that only 16% of the thermal energy from burning fuel is “useful” energy.
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The energy source in an oil-filled radiator is electricity. The wisdom of using an electric heater depends on the per kilowatt cost in your region. If your heater has a 1000 watt rating and your cost of electricity is $0.15/Kwh your cost to operate for one hour would be $0.15.
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Oil. Globally, we currently consume the equivalent of over 11 billion tonnes of oil from fossil fuels every year. Crude oil reserves are vanishing at a rate of more than 4 billion tonnes a year – so if we carry on as we are, our known oil deposits could run out in just over 53 years.