Lesson 4: Geothermal Energy

University:
California State University, Northridge
Course:
GEOG 416 | Earth’s Changing Climate
Academic year:

2025
Views:

0

Pages:

53
Author:

Precious Verdadero

Energy From Volcanoes Rearrange Below are the steps involved in the operation of a geothermal power plant. Arrange them in the correct chronological order. Write your answer on a 1 whole sheet of paper • Electricity Distribution: The electricity generated is transmitted to the power grid and distributed to homes and businesses. • Condensation: After passing through the turbine, the steam is cooled in a condenser and converted back into water. • Heat Collection: Geothermal power plants start by drilling wells into geothermal reservoirs to access hot water and steam trapped beneath the Earth's surface. • Reinjection: The cooled water is then reinjected back into the geothermal reservoir through injection wells to sustain the reservoir's pressure and heat. • Steam Production: The hot water or steam is brought to the surface through production wells. The pressure drop at the surface causes the hot water to turn into steam. • Electricity Generation: The steam is directed to a turbine, which spins a generator to produce electricity. • Answer Key: • Heat Collection • Steam Production • Electricity Generation • Condensation • Reinjection • Electricity Distribution Energy From Volcanoes Geothermal Energy Geothermal energy •The word geothermal comes from the Greek words geo (meaning earth) and therme (meaning heat) Geothermal energy •is a type of renewable energy that comes from the heat stored inside the Earth. Geothermal power plants • is a facility that converts heat from the Earth's interior into electricity. How does a geothermal power plant work? How does a geothermal power plant work? •Heat Collection •Steam Production •Electricity Generation •Electricity Distribution •Condensation •Reinjection How does a geothermal power plant work? Heat Collection Heat collection •Geothermal power plants start by drilling wells into geothermal reservoirs to access hot water and steam trapped beneath the Earth's surface. How does a geothermal power plant work? Steam Production Steam Production •The hot water or steam is brought to the surface through production wells. Steam Production •The pressure drop at the surface causes the hot water to turn into steam. Steam Production •When hot water from deep underground comes to the surface and the pressure drops, it turns into steam. •Steam escapes from underground through cracks in the Earth's surface where water has been heated by hot rocks below. How does a geothermal power plant work? Electricity Generation Electricity Generation •The steam is directed to a turbine, which spins a generator to produce electricity. How does a geothermal power plant work? Electricity Distribution Electricity Distribution •The electricity generated is transmitted to the power grid and distributed to homes and businesses. How does a geothermal power plant work? Condensation Condensation •After passing through the turbine, the steam is cooled in a condenser and converted back into water. How does a geothermal power plant work? Reinjection Reinjection •The cooled water is then reinjected back into the geothermal reservoir through injection wells to sustain the reservoir's pressure and heat. Energy From Volcanoes Types of Geothermal Power Plants Types of Geothermal Power Plants 1. Dry Steam Plants 2. Flash Steam Plants 3. Binary Cycle Plants Types of Geothermal Power Plants Dry Steam Plants Dry Steam Plants •steam comes from deep underground and is used directly to spin a turbine, which generates electricity. Types of Geothermal Power Plants Flash Steam Plants Flash Steam Plants •Water is heated under high pressure underground. •When it's brought to the surface, the pressure drops, and the hot water turns into steam Types of Geothermal Power Plants Binary Cycle Plants Binary Cycle Plants •There are two liquids. •One is hot water from underground, and the other is a special fluid that boils at a lower temperature than water. Binary Cycle Plants •The hot water heats this special fluid, turning it into vapor. •This vapor spins a turbine. The two liquids never mix, making it safe and efficient. Energy From Volcanoes Geothermal Power Plants in the Philippines Geothermal Power Plants in the Philippines •Geothermal power is a significant part of the Philippines' renewable energy landscape. Geothermal Power Plants in the Philippines •The country is located along the Pacific Ring of Fire, which provides it with abundant geothermal resources. Geothermal Power Plants in the Philippines •Philippines has ranked third in the world’s production of geothermal energy Geothermal Power Plants in the Philippines •The Philippines derives its energy from: •1. Coal – 59.6% •2. Natural Gas- 18.2% •3. Renewable (geothermal, wind, solar) – 14% Geothermal Power Plants in the Philippines •TiwiGeothermal PowerPlant: •This plant is in Tiwi, Albay. •It can produce enough electricity to power around 234,000 homes Geothermal Power Plants in the Philippines •Tongonan GeothermalPower Plant: •Located in Leyte, this is the biggest geothermal plant in the Philippines. Geothermal Power Plants in the Philippines •MakBan Geothermal PowerPlant: •Found in Laguna and Batangas, this plant can power about 458,000 homes. Geothermal Power Plants in the Philippines •Palinpinon GeothermalPower Plant: •This plant is in Negros Oriental and can produce electricity for around 192,500 homes. Geothermal Power Plants in the Philippines •NorthernNegros GeothermalPowerPlant: •Located in Negros Occidental, this plant used to power about 50,000 homes but was shut down in 2013 because it couldn't produce enough steam. Geothermal Power Plants in the Philippines •MindanaoGeothermal PowerPlant: •This plant is near Mt. Apo in North Cotabato. •It can produce enough electricity for about 106,000 homes.

Lesson 4: Geothermal Energy

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