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Geothermal energy_SCIENCE9-QUARTER3.pptx
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- 2. Geothermal Energy ▪ arenewable source of energy harnessed from the heat coming from the earth’s interior ▪ considerably safer than most other energy sources ▪ The heat energy is captured from sources such as hot springs and volcanoes ▪ Unlike fossil fuel plants, geothermal power does not produce greenhouse gases (GHG) that are harmful to the environment. It can be used for heating and cooling purposes or to generate clean electricity.
- 3. ▪ Wind energy-windmills ▪ Solar energy- solar collectors ▪ Geothermal energy- hot springs and volcanoes ▪ Hydropower- dams and reservoirs ▪ Biomass energy- lignocellulosic biomass Examples of Renewable Energy
- 6. Mainit Sulfuric HotSpring or Bilawa Mainit Hot Waterfall (Compostela Valley) Japan volcanic hot springs
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- 9. Philippines currently hasseven geothermal fields which supply about 12 percent of the nation’s energy, with a long-term plan to nearly double capacity by 2040. Geothermal power plants are used to generate electricity in Tiwi (Albay), Kidapawan (North Cotabato), Calaca (Laguna), Tongonan (Leyte), Bago City (Negros Occidental), Valencia (Negros Oriental), and Bacon (Sorsogon).
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- 14. BAGO CITY, NEGROSOCCIDENTAL
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- 17. TYPES OF GEOTHERMALPLANTS • Dry steam • Flash plants • Binary plants
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- 21. Is renewable energythe same as clean or green energy? The terms ‘green energy’, ‘clean energy’ and ‘renewable energy’ are often used interchangeably, but there is a key difference between them. Clean energy produces electricity without emissions. However, its manufacture or maintenance can sometimes have a ‘carbon cost’. For example, natural environments have to be cleared to create hydroelectric plants with a dam, and the work to construct them often creates carbon emissions. Green energy comes from totally natural sources, which have low or no environmental impact in their creation or use. They can both be renewable, which essentially means that they come from a source that can’t be depleted.
- 22. PROS AND CONSOF GEOTHERMAL ENERGY There are many advantages of geothermal energy. It can be extracted without burning a fossil fuel such as coal, gas, or oil. Geothermal fields produce only about one-sixth of the carbon dioxide that a relatively clean natural-gas-fueled power plant produces. Binary plants release essentially no emissions. Unlike solar and wind energy, geothermal energy is always available, 365 days a year. It’s also relatively inexpensive; savings from direct use can be as much as 80 percent over fossil fuels. But it has some environmental problems. The main concern is the release of hydrogen sulfide, a gas that smells like rotten egg at low concentrations. Another concern is the disposal of some geothermal fluids, which may contain low levels of toxic materials. Although geothermal sites are capable of providing heat for many decades, eventually specific locations may cool down.
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