Hydroelectric energy and Hydropower Plants | Lesson 7.2 | Earth Science

Jr Grande
22 Nov 202009:14

Summary

TLDRThis educational video delves into hydroelectric energy, highlighting its significance as the second top renewable energy source in the Philippines, contributing to around 40% of the country's renewable energy. It explains the concept of harnessing electricity from water using dams, tidal power, and other methods. The video outlines the three main components of a hydropower plant: the dam, penstock, and powerhouse. It also discusses three types of hydropower plants: impoundment, diversion or run of river, and pumped storage facilities. The lecture emphasizes hydroelectric power's leading role in global renewable energy, generating approximately 83% of the world's renewable power.

Takeaways

  • πŸ’§ Hydroelectric energy, also known as hydro power, is the second top producer of renewable energy in the Philippines after geothermal energy.
  • 🌎 Approximately 40% of the Philippines' renewable energy comes from hydroelectric power plants.
  • πŸ’‘ Hydroelectric energy is defined as the process of using water to produce electricity, which can be harnessed through dams or other modern methods.
  • 🌊 Tidal power plants are an example of hydroelectric energy, where the rise and fall of tides turn turbines to produce electricity.
  • πŸ”‹ Hydroelectric power is the world's leading source of renewable energy, accounting for about 83% of global renewable power generation.
  • 🏭 Components of a hydropower plant include a dam, a penstock (canal, pipe, or tunnel), and a powerhouse that houses the turbines and generator.
  • 🏞️ A reservoir is the body of water stored by a dam, which is different from the dam itself.
  • 🚧 There are three types of hydropower plants: impoundment facilities, diversion or run of river plants, and pumped storage facilities.
  • πŸ› οΈ Impoundment facilities are the most common type of hydropower plant, where a dam is built to store water that is later released to generate electricity.
  • πŸ’§ Diversion or run of river facilities redirect river water through a system of pipes and a small dam to a powerhouse without significantly altering the river's natural flow.
  • πŸ” Pumped storage power plants use a system of two reservoirs to cycle water back into the upper reservoir after it has passed through a turbine, providing a stable supply of electricity.

Q & A

  • What is the second top producer of renewable energy in the Philippines?

    -Hydroelectric energy, or hydro power plants, is the second top producer of renewable energy in the Philippines.

  • What percentage of renewable energy in the Philippines is produced by hydroelectric power plants?

    -Around 40 percent of renewable energy in the Philippines is produced by hydroelectric power plants.

  • What does hydroelectric energy technically mean?

    -Hydroelectric energy technically means using water to produce electricity.

  • What is the world's leading source of renewable energy?

    -Hydroelectric power is the world's leading source of renewable energy, accounting for almost 83 percent of renewable power globally.

  • What is the term used to refer to hydroelectric energy in the script?

    -In the script, hydroelectric energy is referred to as 'white coal'.

  • What are the three conventional components of a hydropower plant?

    -The three conventional components of a hydropower plant are the dam, the penstock, and the powerhouse.

  • What is the function of a dam in a hydropower plant?

    -A dam in a hydropower plant creates a large waterfall that stores enough water to supply the plant at all times.

  • What is the difference between a reservoir and a dam in the context of a hydropower plant?

    -A dam is the wall that creates a reservoir, while a reservoir is the supply of water in a hydropower plant.

  • What are the three types of hydropower plants mentioned in the script?

    -The three types of hydropower plants mentioned are impoundment facility, diversion or run of river plants, and pumped storage facility.

  • How does a diversion or run of river hydropower plant work?

    -A diversion or run of river hydropower plant works by redirecting river water through a dam into pipes towards a penstock, feeding it downhill to the power station.

  • What is unique about a pumped storage power plant?

    -A pumped storage power plant combines a small storage reservoir with a system for cycling water back into the bigger reservoir after it has been released through a turbine.

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Related Tags
Hydroelectric PowerRenewable EnergyPhilippinesEnergy ProductionHydro Power PlantsGeothermal EnergyWater EnergySustainable PowerGreen EnergyEnergy Sources