Terms in this set (32)
A coal plant converts energy from one form to another. Which choice best represents this conversion?
Gaseous water above 100C
What is steam?
An energy conversion device can take on many forms:
A measure of the effectiveness of an energy conversion device is the Efficiency. Efficiency is defined as: Efficiency = Useful Energy Output / Input Energy. Of the above listed energy conversion devices, which is the LEAST efficient?
Which law of thermodynamics states that energy can be neither created nor destroyed?
In 1979, a nuclear accident occurred at a nuclear power generating facility located at Three Mile Island. Where is Three Mile Island located?
How much US electricity supply is nuclear derived?
What causes the U235 nucleus to split?
In a typical power plant, the boiler operates at an efficiency of 90% , the turbine operates at an efficiency of 40% , and the generator operates at an efficiency of 98%. What is the overall efficiency of the power plant?
Of the three main power plant components: Which component has the highest overall efficiency?
The residential sector of PA consumed about 150.6x1012 Btu of electricity. Assuming all of this energy comes from bituminous coal with a heating value of 14,000 Btu/lb. How MUCH coal did we burn?
What is the Hydrogen to Carbon ratio of natural gas (methane)?
Calculate the overall efficiency of an athlete over the course of a tri-athelon where the efficiencies for various events are as follows:
Select all of the following components necessary for a nuclear reactor:
Ft-lbf per second
Check all of the following units that describe power
CO and H2
What are the main components of SYNTHESIS gas (syn-gas)?
What percentage of electricity supply (US) could be provided by wind power at the end of year 2030?
deep water close to land
A good location for OTEC (Ocean Thermal Energy Conversion) is ?
Which country currently utilizes gasification to generate transportation fuels and many chemicals in significant amounts (best answer)?
Which of the following renewable energy sources is used to product the MOST electricity (FROM RENEWABLE ENERGY) in the U.S.?
its very low energy density
Take a look at this page from the NREL website to learn a little more about hydrogen storage.
Hydrogen storage is a challenge due to its explosive characteristic. Another reason is
In which country was the LARGEST hydroelectric dam being built? Once completed, this dam will be the world's largest capable of generating from 15,000 to 20,000 MW of power!
If all of these renewable energy sources are so great, why hasn't the United States converted to a purely "Renewable" energy base?
Geothermal for home heating/cooling is EXACTLY the same as geothermal for eloectricity generation.
electricity, heat, water
Fuel cells can produce
the gravitational pull from the moon
What is the main cause of the tides?
At ground level, you carry a 20kg sack of potatoes into an elevator and ascend 15 floors (approximately 45 meters), if you drop the sack out of the window, what would the potential energy of the sack of potatoes when it reaches ground level? (hint: P.E. = mgh)
If a house or building is designed in that there is a large area of windows facing south to maximize natural light, what type of solar energy best describes this?
The process that produce various types of hydrocarbons (e.g. methane, gasoline) from synthesis gas is called
A little more than wind (about 3%)
How much does fuel oil (obtained from crude oil) contribute to electricity production in the US?
A) Can be burned in SLIGHTLY modified internal combustion engines (fuel flex) at 85% ethanol, 15% gasoline (E85%)
B) Creates jobs in the farm lands and can be produced in the United States thus removing our dependence from foreign oil
C) Can be derived quickly using natural growing plants
D) Existing infrastructure for liquid fuels
Ethanol is a potential alternative fuel, why is it one of the most likely candidates for biofuels?
Coal > Nuclear = Natural gas
As of 2006, the three major fuel sources (in order) for electricity generation in the U.S. are:
Geothermal electricity generation is the same as geothermal heating and cooling.