Geothermal Energy (student preso)

- Sirirat, Napat, Rishab

Geo – earth, Therme - Heat

MUIC ICPY211Trimester 1 2009-2010

� Reykjavik, Iceland, one of the cleanest city of the world

A lava fountain is an example of the amount of heat stored in the Earth

Intense heat flow from inside the Earth (core temperature 4000° C to 7000 °C)Underlying Mantle, partially molten rock

The Pohutu Geyser in New Zealand erupts with a natural blast of the Earth's interior heat.

Water sweep through cracks and fissure and comes in contact with hot rocks, may reach a temperature of 350 ° C

Geothermal heat pumps make use of the constant temperature that exists just under the Earth's surface.

1.1.1.1. Dry Steam Power Plant Dry Steam Power Plant Dry Steam Power Plant Dry Steam Power Plant – produce the energy directly from underground stream.

2. Flash Steam Power Plant Flash Steam Power Plant Flash Steam Power Plant Flash Steam Power Plant – the hot water, over 350 F, is released from the pressure and is kept in the tank. The water is heated in the tank and turns to stream.

3. Binary Steam Power Plant 3. Binary Steam Power Plant 3. Binary Steam Power Plant 3. Binary Steam Power Plant – the hot water with 100 F is come to a heat exchanger and mix with a secondary liquid.

• Renewable energy• No serious pollution• Lower maintenance cost.• Require less area of land• More reliable, can run 24 hours a day, 365 days a year

•High cost of set up•Antifreeze solutions are slightly toxic

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