We now come to the saving possibilities. That is, there are a lot of possibilities to design a sustainable process. Module 3 chapter 4 handled two of them.
What are "energy sources"?
natural substances and/or substances that may contain energy in several forms
electric power
substances that convert energy from several forms into other
What are fossil energy sources?
energy sources, that exist in former days and are still to find in ground
coal, oil and gas
never-ending energy sources
What are renewable energies?
energy in process that will be regenerated
gas, oil and coal
biomass, disposals, earth warmth, sun energy, water, wind
Electric power is one kind of energy. How will it be generated?
by destruction of primary energy (e.g. burning)
by conversion of primary energy (e.g. burning)
no need to generate. Electric power is a primary energy that occurs in natural environment
What does the efficiency factor describe?
efficiency of energy conversion
a certain minimum temperature that is necessary for activeness of energy
Please select. What is the efficiency factor of a gas-/steam turbine?
58 %
70 %
30 %
Please select. What is the efficiency factor of a nuclear power plant?
58 %
33 %
70 %
Was does "effective energy" mean?
energy at the end of a conversion chain to be at consumer`s use
energy necessary to run a machine
What are "energy reserves"?
energy sources with established proof of existence and economically to obtain
saved energy in a plant for maximum production times
Advantages of gas as an energy source?
efficient and a low level of harmful substances when burning
cheap
Advantages of coal as an energy source?
harmless transport and storage
cheap
Advantages of nuclear power as an energy source?
no CO2-production, no dependency of political insecure raw material deliverers