What is the advantages and disadvantages of renewable energy?
Disadvantages of renewable energy resources
| Energy Resource | Advantages | Disadvantages |
|---|---|---|
| Hydroelectric power stations | Clean and cheap to run | Expensive to set up and output could be affected by drought |
| Solar cells | Clean and cheap to run | Not always sunny and output does not always outweigh initial cost to set up |
What are the pros and cons of renewable energy?
Pros: It is abundant, and can be used without interruption, cleaner than fossil fuel. Cons: Can result in air pollution, takes a lot of energy to produce, can be seasonable and competes with food production. Landfill gas, solid waste energy comes from harnessing the decomposition of organic material.
What is a disadvantage of renewable energy Mcq?
1. Which of the following is a disadvantage of renewable energy? Explanation: Renewable energy often relies on the weather for its sources of power. Hydro generators need rain to fill dams and thereby provide electricity.
Why renewable energy is not reliable?
Renewable energy sources are not able to supply baseload power generation – meaning they cannot supply a region’s continuous energy demand. Electric power generation must come from other sources, like natural gas – an abundant and clean source of energy.
What country uses most renewable energy?
Germany
Why is ethanol bad for engines?
— Efficiency: Ethanol-blended fuel’s lower energy efficiency may reduce fuel economy of your engine. — Stalling: Ethanol can cause engine stalling if the water in the ethanol separates from the gasoline and floods the engine. This problem is most likely in engines that sit unused for long periods of time.
Why are biofuels bad?
Biofuels Are Bad for Feeding People and Combating Climate Change. Converting corn to ethanol in Iowa not only leads to clearing more of the Amazonian rainforest, researchers report in a pair of new studies in Science, but also would do little to slow global warming—and often make it worse.
Is biofuel bad for your engine?
The main problem is that biofuels are less stable than petrodiesel, and they deteriorate over time. Light, temperature and humidity increase the rate of deterioration. “Biofuels contain oxygen compounds, which can lead to oxidation if the fuel is not processed and stored properly.
Which biofuel is the best?
Six of the best biofuels
- Sugar cane. Sugar can provide high-energy fuel for machines as well as people.
- Palm oil. This is extracted from the fruit of the oil palm tree, which is cultivated in south-east Asia, South America and Africa.
- Oilseed rape.
- Wood.
- Soybeans.
- Algae.
Why is biodiesel not used?
The unaccounted for environmental problems that indirectly arise from biofuel use are significant: 1) direct conflicts between land for fuels and land for food, 2) other land-use changes, 3) water scarcity, 4) loss of biodiversity, and 4) nitrogen pollution through the excessive use of fertilizers.
Is Jatropha oil edible?
Jatropha curcas L. is a plant belonging to Euphorbiaceae family that produces a significant amount of oil from its seeds. This is a non-edible oil-bearing plant widespread in arid, semi-arid and tropical regions of the world.
Is Jatropha poisonous to humans?
Jatropha seed oil is currently being tried as a biofuel. Though all parts of the plant are poisonous, seeds have the highest concentration of ricin and thus very poisonous [5]. The adverse effects following consumption of seeds include vomiting, diarrhoea, abdominal pain and burning sensation in the throat.
Why biodiesel is not used in India?
In India, jatropha seeds were used to produce biodiesel, but the production has not been consistent. This led to the raw material cost becoming fairly expensive, making biodiesel even more expensive than petroleum based diesel.
Is Jatropha a biofuel?
Oils from Jatropha, melon, palm oil, soybean, sugar cane, and used oil can be used to make biodiesel. Jatropha is very important in the production of biodiesel since it is a nonedible plant and will not cause competition on human food.