Find numerical examples of energy usage and thermodynamic
computations of efficiency. Use the web to compare the efficiencies
of several power production processes. Which are in use and which
are planned?
Be sure to cite your sources. Wikipedia, while useful, is not a
primary source, and you should not cite it.
To earn the maximum number of points for this discussion, you
must:
Post your response of at least 150 words
How can distributed energy technologies like solar, energy
efficiency and storage serve as a “Plan B” for getting rid of coal
plants in the US if Congress won’t pass a carbon tax or a cap and
trade policy?
Why the efficiency of cyclic thermodynamic process is
always < 1?
Please, for better understanding I need a detailed description.
May be some examples in nature, schemes, and some description based
on basic relations. I want to understand it very well. Would be
nice to get some additional sources to read (books or
articles).
consult the plot of efficiency of solar cells prepared by the
National Renewable Energy Laboratory (NREL). As of 2010, the
______________ cell has the highest efficiency and _____________
cells have the lowest efficiency. (Fill in the blanks.)
Select one:
a. single crystal Si; dye-sensitized
b. two-junction concentrator; inorganic;
c. three-junction concentrator; organic
d. single-junction concentrator; amorphous Si:H
The Florida Energy Factor (FEF) is used to compare the
efficiency of domestic solar hot water heaters and to determine
certain building construction credits. Solar water heaters with a
high FEF are more cost efficient. Assume normality for the FEF
distribution.
A random sample of approved heaters was obtained, and the FEF
value for each is given in the following:
3.3 3.2 1.8 2.1 4.2 3.9 4.6 6.3 1.9 1.9 4.9 6.7 5.2 3.1 1.4
Is there any evidence to...
The important of solar energy, benefits can you get using solar
energy, how is the process using the solar panels to produce energy
and list the advantage and the disadvantage of it.
Solar electricity cost.
Despite all the advantages of using solar cells to harvest solar
energy, solar electricity still has an insignificant share (~1%) in
the world’s overall energy supply picture. This is mostly due to
the economic consideration. While there’s virtually no fuel
(sunlight) cost and maintenance cost once the solar panels are
installed, the initial cost of solar electricity systems is still
the obstacle for wide-spread adoption of solar photovoltaic
technologies.
a. Use the single-crystalline Si solar panels
as...