Manufacturing Engineering Introduction to Geothermal Energy 1 Copyright © Texas Education Agency, 2014. All rights reserved.

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Presentation transcript:

Manufacturing Engineering Introduction to Geothermal Energy 1 Copyright © Texas Education Agency, All rights reserved.

Bell Work Activity A nswer the following questions on a sheet of paper. 1. Identify three uses for steam. 2. What advantages would steam energy have over fossil fuel energy? 2 Copyright © Texas Education Agency, All rights reserved.

Warm-Up Activity Terms There are several important terms and definitions students need to know. 1. Complete Introduction to Geothermal Energy Terms and Definitions. 2. Students may work in groups. 3 Copyright © Texas Education Agency, All rights reserved.

Overview - Our planet is an orbiting ball of energy. Sunlight acts as a heat source for our planet and makes it possible for animal and plant life to survive. Heat from the earth’s core plays an important roll in the life of our planet as well. - Scientists have determined that the earth’s inner core may be as hot as 4000 degrees Fahrenheit. 4 The Earth Crust Mantle Outer Core Inner Core Copyright © Texas Education Agency, All rights reserved.

Overview - Large bodies of water exist within the earth’s crust. Magma (hot liquid rock) from the mantle interacts with the water and can escape through cracks and create hot springs and geysers. Heat from the earth is called geothermal heat or energy and has been used by humans since ancient times. - Geothermal energy is clean, sustainable, and accessible. However, we can only access it efficiently by drilling. The drilling process can be expensive in the beginning but the costs are recovered later. 5 Copyright © Texas Education Agency, All rights reserved.

Harnessing Geothermal Energy Geothermal Energy can be harnessed in several ways. - Electrical power plants Heat from the earth can be used to create steam to drive turbine- driven generators. A variety of configurations have been created to harness this renewable resource. - Heat pump systems These are used to capture the heat from the earth for distribution to residential and commercial buildings. The energy is used to heat and cool homes; support greenhouses; cook; and heat water, spas, and aquaculture (fish farming). 6 Copyright © Texas Education Agency, All rights reserved.

Geothermal Reservoir. 7 Hot Rock Magma Rainwater Copyright © Texas Education Agency, All rights reserved. Hot Water