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Renewable Energy and Combustion Process - Assignment Example

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In the essay “Renewable Energy and Combustion Process” the author discusses the issue that the combustion process leaves 70% of the fuel unburnt. Burning 100MJ of energy thus emits 30MJ of kinetic energy. The electric car still uses parts manufactured of carbon components such as tires among others…
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Renewable Energy and Combustion Process
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Renewable Energy and Combustion Process
Question 1, a. 30% efficiency implies that the combustion process leaves 70% of the fuel unburnt. Burning 100MJ of energy thus emits 30MJ of kinetic energy.
Question 1 b. The second steam turbine with a similar efficiency will emit 30MJ of energy, as is the case with the first turbine.
Question 2, c: The overall efficiency of the two turbines remains 30%
Question 2, a: Gas is a form of clean energy a feature that validates the support that most environmentalists have for gas. Coal on the other hand emits poisonous gas as bi products. As a clean energy, the combustion of natural gas does not leave any harmful residue, as is the case in the combustion of coal, which emits carbon monoxide. The gas rises to the ozone layer thus react to emit carbon dioxide. This contributes to the depletion of the fundamental layer thus enhancing global warming.
Additionally, the extraction of gas is a safe and clean process that does not require the destruction of vegetative cover as is the case in the bulky extraction of coal.
Question 2, B: The gas lies deep in the earth crust and therefore is an expensive process.
Question 3: Radio activity would amount to 750,000 Bq/m2 in the modern Okuma town owing to the increased ionization of the earth surface.
Question 4, a. the total half-lives amount to 8months
Question 4, b: The age of the shoe is about 112 years.
Question 4, c. the huge disparity in the quantity of carbon in both the shoe and the shoelace validates the claim that the lace does not belong to the shoe.
Question 5: taking a tour of Okuma city is a safer choice owing to the fact that she will wear protective gear unlike in the dinner date where she is likely to eat fish exposed to active radioactive substance.
Question 6, a: The energy released every second is 2.55× 10−13 Joules.
Question 6, b: the amount of energy released in the context is higher than the energy consumed by a 100W bulb.
Question 6, c: Shutting down the reactor stops the reaction but the core would still emit energy amounting to 1.55× 10−13 Joules owing to the constant rate of reaction daily.
Question 7, a: The capacity of the dam is likely to increase with the increase in the amount of water in its reserve.
Question 7, b: Renewable energy is often unreliable owing to climatic disparities.
Question 8: Biodiesels and is renewable because just as the name suggests the key raw material in its manufacture are plants, which grow just like any other. The same is the case with ethanol whose manufacture relies on plants that act as the raw materials. Furthermore, the two types of fuels just as any other renewable energy does not pollute the environment since they emit unstable yet harmless gaseous components that readily react with the oxygen in the atmosphere to form water vapor.
Question 9, a: The electric car still uses parts manufactured of carbon components such as tyres among others.
Question 9, b: The lack of facilities to recharge the cars, the cars require a portable source if electric power.
Reference
Tim, I. (2000). The Perception of the Environment: Essays on Livelihood, Dwelling and Skill. New York: Psychology press. Read More
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