E. Activity: Reading 15m

Heat Production in TPPs:

There are several kinds of TPPs depending on how heat is generated: Fossil fuels TPPs � fossil fuels burning (Coal, Oil and Natural Gas)

Fig. 3a: A Fossil Fuel (Coal) Power Plant (image from

http://en.wikipedia.org/wiki/File:Big_Bend_Power_Station.jpg under GDFL and CC BY-SA 3.0).

.

Biomass TPPs � biomasses burning (Wood, Waste, Crops, …)

Fig. 3b: A Biomass Power Plant (image from

http://commons.wikimedia.org/wiki/File:Kaukas_paper_mill_in_2009.jpg under license CC BY-SA 2.0)..

Nuclear TPPs � heat comes from Uranium nuclear fission in a reactor.

Fig. 3c: A Nuclear Power Plant (image from http://it.wikipedia.org/wiki/File:Threemileisland2.gif under public

domain).

Solar TPPs � solar energy is concentrated to produce heat

Fig. 3d: Two different concepts of solar thermal Power Plants: the parabolic mirrors focusing sunlight on the

pipe (left) and the tower concept (right). (Images from

http://commons.wikimedia.org/wiki/File:Parabolic_trough_solar_thermal_electric_power_plant_1.jpg

under GDFL and CC BY-SA 3.0 and from

http://commons.wikimedia.org/wiki/File:PS10_solar_power_tower.jpg under CC BY 2.0)

Geothermal TPPs � heat is derived from underground natural sources

Fig. 3e: Geothermal Power Plant (image from http://en.wikipedia.org/wiki/File:NesjavellirPowerPlant_edit2.jpg

under public domain).

F. Task: Work in pairs 3m

1. All the first three pictures have something in common: what? They are all built _close to a river, lake or sea_

2. What do you think the reason is? Because they need _(cold) water_ for cooling.

SS WILL DO THESE EXERCISES AS HOMEWORK: EX. 1: Learn the new key words and technical terms and then do the following exercise. EX. 2: Find the odd one out and explain the reason for your choice 1. Power plant Egg plant Electrical generator Turbine 2. Coal Oil Natural gas Coil 3. Wind Water Sun Heat