Energy and Health Flashcards
Energy cycle
1 Material acquisition and construction 2 Emissions from material acquisition 3 Operation and maintenance 4 Energy back-up system 5 Energy storage system 6 Transportation and transmission 7 Waste management
Needs for energy
1 Basic human needs (heating, lighting, cooking)
2 Agriculture (irrigation, equipment)
3 Urbanization (basic services, public utilities)
4 Transportation
5 Industrial production
Major source of energy in the Philippines
Coal power plant
Major source of energy in Japan, US, Europe
Nuclear power plant
Has deleterious health effects
Emissions from material acquisition
Energy storage system
Step-up transformer
Uses highly toxic PCB
Step-up transformer
High voltage lines that transport energy
Transmission lines
Radiation to which people living near transmission lines are exposed
Electromagnetic radiation
Waste produced by energy plants
Ash from coal
Heavy metal
World electricity generation
1 Coal (39%) 2 Hydro (19%) 3 Nuclear power (16%) 4 Gas (15%) 5 Oil (10%)
Cheapest source of energy
Solar energy
Renewable sources of energy
1 Solar energy
2 Wind energy
3 Hydropower
Sources of energy
1 Solar energy 2 Wind energy 3 Hydropower 4 Moving water 5 Biomass 6 Geothermal energy 7 Fossil fuel 8 Nuclear energy
One of the strongest and fastest currents
San Bernardino Strait
Hydropower process
1 Water from reservoir flows due to gravity to drive the turbine
2 Turbine is connected to the generator
3 Power generated is transmitted over power lines
Requires impoundment facility
Hydropower
Impoundment facility
1 Transmission lines 2 Dam 3 Penstock 4 Generators 5 Turbines
Stores water
Dam
Conduct electricity
Transmission lines
Penstock
Carries water to the turbines
Generators
Rotated by turbines to generate electricity
Turbines
Turned by the force of the water on their blades
Location of the largest hydropower plant
China
Highest use of hydropower
Canada
Tajikistan
Advantages of hydropower plants
1 No operational greenhouse gas emissions
2 No sulfur dioxide and nitrogen gas emissions
3 Non-environmental benefits
Non-environmental benefits of hydropower plants
1 Flood control 2 Irrigation 3 Transportation 4 Fisheries 5 Tourism
Disadvantages of hydropower plants
1 Loss of land under reservoir
2 Interference with the transport of sediment by the dam
3 Problems associated with the reservoir