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Electricity Generation Case Studies - Coggle Diagram
Electricity Generation Case Studies
Manapouri Hydro Station
lies along eastern margin of Fiordland, has steep sided mountains and lakes as a result of glacial action in the past
First electricity generated in 1969 and fully operation in 1972
Manapouri and Te Anau advantages
Large catchment areas
High reliable year round rainfall
large stores of water within their natural ranges
Manapouri's surface is 178m above sea level, so natural height can be used instead of a dam
Largest Hydro Station in NZ
most of the electricity goes to the Tiwai aluminium smelter nearby
710MW produced
610MW goes to Tiwai
Water enters hydro station through penstocks, runs down a slope to the powerhouse
Number of metres the water falls is called the net head
hydro station built underground to take advantage of manouri's natural height, maximizing net head
net head is 166m
White Hill Wind Farm
close to Mossburn in southland, sited on forestry land, began generating in 2007
took 17 months to build
Outputs 58MW from 29 turbines of 2MW each
Parts of a turbine
67m tall tower
10m long nacelle, 65700kg
can rotate to face the wind
three 39m blades, 6500kg
blade angle can be altered for optimal power production
foundation made of 380 cubic meters of concrete and 36 tonnes of steel
Southland Advantages
strong winds as natural resource