Solar Power Essay

Solar Power Essay
Solar Power: An Alternative Energy Source
Since first discovered in the 1860s, the concept of storing energy from the sun to use as a source of power has been studied and pursued by many
programs. Either using solar collectors or photovoltaic cells, the methods of using solar power are becoming more efficient and cost–effective. Solar
technology is currently being used by homes and businesses, but is still too expensive and risky for many residents. Researchers are still making
advances to solar technology for it to be a feasible energy source in the future.
Solar energy was first started in the 1860s when Auguste Mouchout and William Adams found a way for storing solar radiation into tanks of water.
Since then, there have been ... Show more content on Helpwriting.net ...
Because silicon cells are only semi–conductive, it is harder to generate an electrical current, and therefore require collective grids to transfer electrons
through a series of thin wires. Although collective grids are the
Solar Power 3 most efficient way of solving conductive issues, it is expensive to produce. Instead, photolithography is used to attach the metal grid
to the cell. After the development of PV cells in the 1940s, little progress was made for the next few years because of its expensive cost. However,
it was used in the space industry in the 1950s and 60s. Now, with nanotechnology and other improvements, there is possibility for cheaper and more
efficient production. Finally, there are uses of solar furnaces to collect solar energy in a small area by reflecting the heat using mirrors. An example
of this is a solar furnace in Odellio, France that has the ability to heat up to 33,000 degrees Celsius (Darvill, 2007, para. 11).
Experiments with Solar Power Plants:
The Mojave Desert is an ideal place for solar power plants since it is so insolated and has more sunlight than most areas of the United States. The
Solar Energy Generating Systems were nine trough power plants built in 1980s converting sunlight into electricity. Combined, they produced 354 MW
of power, enough to support 500,000 people and making it a successful project. (Wikipedia, 2007, para. 1).
The Solar Energy Technology Program (SETP) set up solar initiatives in hopes of replacing fossil
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A Brief Note On The Civil Common Room
Introduction:
The civil common room is very much the relaxing room of a university or school, so to have a successful, useful, sustainable and fascinating room, it
has to be designed perfectly and focus on how to deal with the size, shape, hazards of the location, access, ventilation, wreathing, speed wind, solar
power and access. This essay will illustrate all there parts.
Size of the room:
Basically, there is no perfect volume, it should be made as big as needed because to avoid getting many empty areas or overfull. This means, the
area must be planed and take a place depending on the location which is 40 m2 x 50 m2, so this design will take form the position a square by
choosing 15 m2 x 15 m2, and this area will be for toilets, locker section, mini kitchen and the rest is for sitting side. Moving to the height of the
shape, ceiling might needs roughly 6.23m in order to get more space for lights and electricity which will take 0.5 and the triangular prism that needs
2.73 m high with angles equals 20o, 140o and 20o, and the rest is for walls which is 3m. Thus, the total volume is almost 1094m3, the pictures of
figure 11 present how it will be.
Figure 11 (sketch up .S A. 2016))
Entrances of the room:
There will be one entrance which will located in south of the room and another one will be an emergency exit which will be in north which is
opposite side of entrance, they will be the same level with ground or the doors will be slightly up from the ground by

Design And Fabrication Of Helical Coiled Solar Water...
Abstract – This paper is worried with Design and Fabrication of Helical Coiled Solar Water Heater with auto GPS beacon under the neighborhood
climatic condition. Sunlight based Parabolic Dish is at present utilized for the Water warming and cooking applications. For the most part Solar
Parabolic Dishes are altered center point concentrators, yet so as to accomplish higher warm productivity we attempted to make itline center
concentrator by utilizing a one of a kind beneficiary (copper tube as helical loop) mounted at central point.We are utilizing copper helical curled
through which water will circle. Helical loop as more warm proficiency contrasted with straight tube curl. This paper presents trial stage in view of the
configuration, improvement and execution qualities of direct boiling point water era via auto–following sun powered illustrative dish concentrating
framework. Because of auto following framework in daytime consistent boiling point water will be accessible.
Index Terms– Absorber, Parabolic Dish, recipient, solar water heater, Auto Tracking Device
I. INTRODUCTION
Sun oriented vitality is the essential wellspring of vitality for our planet. The normal sun based vitality achieving the earth in the tropical zone is
around 1 kwh/m2 and aggregate radiation over a day is, best case scenario around 7 kwh/m2. The sunlight based steady Isc is the rate at which vitality
is gotten from the sun on a unit range opposite to the beams of the sun, at the mean separation of

Expansion Of Solar Energy : Solar Power
EXPANSION OF SOLAR ENERGY
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ABSTRACT
Solar power has increasingly gained demand over the years. It is due to the rising energy requirement by industries, and also population growth that
energy requirements have increased as years go by. However, the demand has brought the challenge of expanding the production ofsolar energy. This
paper focuses on how engineering concept of Lean can be used to bring efficiency in the expansion of solar power production.
BACKGROUND INFORMATION
Solar power harness the sun 's energy to create electricity. Solar energy assets are enormous and boundless, and they can be tackled anyplace that gets
sunlight. The measure of solar radiation, otherwise called insolation, coming to the earth 's surface consistently is more than all the energy at present
devoured by every single human activity yearly [1]. Various variables, including geographic area, time of day, and current climate conditions, all
influence the measure of energy that can engage in for electricity creation or heating purposes.
Although solar energy is copiously accessible, it is likewise variable and discontinuous. Solar power can 't produce electricity during the evening
without capacity components, and is less powerful in cloudy or overcast conditions. Hence, solar energy is frequently utilized as a part of conjunction
with the base–load era from coal, regular gas, atomic, and hydro wellsprings of power that can save the period in times of irregularity.
The two primary

Solar Energy Synthesis
According to Source B, solar power is defined as the collection of solar radiation to produce electricity. While the energy of the sun is free and
abundant, debates have grown whether or not it provides for our energy needs. Is solar energy clean or does it pollute our environment. Solar energy is
the answer to the Earth's energy needs for the future because, it will get cheaper, be more efficient, and it produces no pollution during operation. First,
solar power energy will soon be cheaper. While others may say that the installation is expensive, will become cheaper throughout the decades.
Source C says that we will hit a peak in oil where we will start exporting as oil prices rise. This means as oil prices rise, solar energy will become
cheaper.

Solar Generator Advantages And Disadvantages
Portable Solar Generators
The first thing to begin with, what is solar generator and what are its advantages. In today's date portable solar generator is a great alternative to the
conventional source of electricity. Above all it saves you a huge amount of money on your electricity bill because it uses the solar energy via solar
panels and stores it in the battery which is later on released through inverter as AC power. It grants you liberty from the local power supplier.
On–demand usage is the biggest plus point solar generators apart from savings. Manufacturers came up with innovating ideas solving the storage
capacity and the battery weight issue. Now we can even get compact, 1.6 lbs weight, yet rugged enough solar power generators that can be carried
anywhere and rough outdoor usage.
Take a look at various Portable Solar Generators available in the market;
Goal Zero 22004 Yeti 150 Portable Solar Generator
When electricity is not available, Goal Zero 22004 Yeti 150 Solar Generator is brilliant way to power up your sophisticated electronics like the
Smartphone, laptop, and lights. This super–compact solar generator is just 8 inches tall and 10 inches wide and a carrying handle. It is light just 12 lbs
and extremely portable. You can... Show more content on Helpwriting.net ...
1.5 lbs weighing this solar generator is powerful, durable, portable, waterproof and almost indestructible. It gives a peak output power to the battery
of 2.2 watts and can increase up to 3.3 with added reflectors. It is waterproof, just cover USB port with a plastic sheet and it is SAFE! No worries even
if you drop it. A big lithium polymer battery that stores the power longer gives your power for your tools. It works fine even when without lots of sun.
There are LED lights that tell you the status of the generator. Enjoy adventure now without any

Scope of Solar Thermal Power Plants in India
TOPIC
SCOPE OF SOLAR THERMAL POWER PLANTS IN INDIA
AUTHORS
U. Mohamed Razik Ali
E.Praveen
SCOPE OF SOLAR THERMAL POWER PLANTS IN INDIA
U. Mohamed Razik Ali (UG student)
E.Praveen (UG student) praveen93psn@gmail.com mohamedrazikali@gmail.com
Abstract Now–a–days the importance of electrical energy is very severe, that no one could live without it. In such a condition, in India and especially
in southern India there is a great demand for electricity. This article refers to such a problem and also gives a solution .Moreover calculations based on
the solar potential in India and the possibilities of constructing Solar Power Plants in India is also discussed here. Some methods for storing the huge
potential of solar ... Show more content on Helpwriting.net ...
This indicates that India's future energy requirements are going to be very high and solar energy can be one of the efficient and eco–friendly ways to
meet the same.
Solar thermal power generation technologies
Solar Thermal Power systems, also known as Concentrating Solar Power systems, use concentrated solar radiation as a high temperature energy source
to produce electricity using thermal route. Since the average operating temperature of stationary non–concentrating collectors is low (max up to
1200C) as compared to the desirable input temperatures of heat engines (above 3000C), the concentrating collectors are used for such applications.
These technologies are appropriate for applications where direct solar radiation is high. The mechanism of conversion of solar to electricity is
fundamentally similar to the traditional thermal power plants except use of solar energy as source of heat.
In the basic process of conversion of solar into heat energy, an incident solar irradiance is collected and concentrated by concentrating solar collectors

or mirrors, and generated heat is used to heat the thermic fluids such as heat transfer oils, air or water/steam, depending on the plant design, acts as
heat carrier and/or as storage media. The hot thermic fluid is used to generated steam or hot gases, which are then used to operate a heat engine. In
these systems, the efficiency of the collector reduces marginally as its operating

Sustainable Development And Energy Development : The G8...
The ongoing demand and patterns of industrial energy production and consumption are highly unsustainable which may lead to face multiple
challenges like global warming, greenhouse gas emissions, geopolitical conflicts, consecutive fuel price rises and at last fossil fuel reserves depletion.
Worldwide all the developing countries are working to make a vibrant industrial sector where entrepreneurs will make investments and thus
opportunities will be created for new jobs. To achieve sustainable development and alleviating poverty, most of the developing countries followed the
energy strategy to be focused on combating energy poverty by improving integration systems to the reliable and renewable energy services, enhancing
energy efficiencies and promoting renewable energy to meet rising energy demand in industrial areas. Moreover, in reference to UNIDO (2007b),
potential of renewable and clean energy resources to protecting the environment is yet to be realized. The G8 Summit Declaration of 7 June 2007
states: "Improving energy efficiency worldwide is the fastest, the most sustainable and the cheapest way to reduce greenhouse gas emissions and
enhance energy security." [3,5–8, 52] However, in places without sufficient solar energy supply, it's not possible to create solar energy system
integration in industries or other promising sectors. Now–a–days these industrial processes are using electricity or liquid or gaseous petroleum fuels to
meet the demand of industrial process

Solar Energy Definition, Alternative Energy, Renewable Energy
Title: Solar Energy Definition
Meta Tags: solar energy definition, solar panels definition, solar power definition, alternative energy, solar energy power
Meta Description: Learn how solar panels harness the power of the sun to create a clean and renewable form of electricity that can save you money on
energy costs.
Simply stated, the definition of "solar energy" is energy that is created by the sun. In the context of modern usage, "solar energy" may refer to
technology that converts radiation from the sun into usable energy sources, such as electricity. In essence, solar panels gather energy from the sun 's
rays and send the energy out through a process that results in electricity, that can be used to power homes, machinery and much more. Solar energy is a
sought–after source of alternative energy because the sun offers a clean, renewable and cost–effective resource as long as it continues to burn and
power life on Earth.
Where It All Begins
Solar energy from the sun begins with a fusion process called the PP, which is short for "proton–proton," chain. The PP chain begins with gravity, as
the core of the sun is extremely dense due to immense gravitational forces. The protons from hydrogen atoms in the core resist the force and create
energy, which makes the temperature rise. The energized protons engage in violent collisions and eventually fuse to each other to create helium.
Helium atoms begin to stabilize and release energy in the form of electromagnetic waves that

Notes On Parabolic Trough Collector Tube
Parabolic trough collector tube I. Introduction General information Nowadays the energy consumption is on such high level that scientists all over
the world are looking for other solution. The greenhouse effect is becoming more and more disturbing effect and some steps need to be taken to at
least prevent some of damages which it may cause. First of all, I will try to explain what parabolic trough collector is. It is one of the types of solar
thermal collectors which is straight in one dimension and curved as a parabola in the other. As you can see in the picture 1. the whole device can be
divided into following parts: parabolic reflective mirror, linear receiver tube or heat collection element, steel support structure/frame and a single–axis
drive mechanism. Parabolic trough solar field consists of hundreds or even hundreds of hundreds of solar collector located parallel through the field.
Every single collector assembly is an independently tracking subsystem so that it makes the whole system more efficient. picture 1 A parabolic solar
collector assembly Parabolic trough collectors need to be designed as simple as possible, not to generate extra costs, easy to assembly which also
means they can be transported in sections to ensure accurate parabola with high rigidity and to lengthen the field to its maximum (which can differ
from several meters to over 150 meters). The objectives of parabolic collectors are to explain why concentration is important and what

Energy Sources Of Solar Energy
The earth has lots of energy sources such as nuclear energy, fossil energy, and renewable sources. Solar, wind, geothermal, and water are renewable
sources of energy. These energy sources are clean. They do not produce any pollution. But the most reliable energy source is the sun. The sun is an
important part of living things. It produces an energy called solar energy. Solar energy is the earth's main source of energy which can be transformed
into heat and electricity. Its energy was used to heat and to light homes during the earliest centuries. Without the sun, living things on earth would not
surely survive because it would be extremely cold and dark. According to the article "Solar Energy," every year the sun carries an average of 1.5
kilowatt–hours of energy to the earth in the form of visible light, X–ray, ultraviolet, and infrared radiation (Solar Energy). Solar energy can be
converted into electricity in two ways. The first one is with the use of solar thermal or electric power plants that creates power by concentrating the
sun's energy to heat the liquid and produce steam which is used to power a generator. (Solar Explained). This is mostly similar to coal and nuclear power
plant.
Another way is by using photovoltaic cells or solar cells that transform sunlight directly into electricity (Solar Explained). In May 1954, photovoltaic
cell, which is made out of a semiconductor called silicon, was developed by three research scientists at Bell Telecommunication

Energy Supply, Its Demand and Security Issues for...
Available online at www.sciencedirect.com
ScienceDirect
Solar Energy 112 (2015) 68–77 www.elsevier.com/locate/solener Short–term reforecasting of power output from a 48 MWe solar PV plant Yinghao
Chu, Bryan Urquhart, Seyyed M.I. Gohari, Hugo T.C. Pedro, Jan Kleissl,
Carlos F.M. Coimbra в‡‘
Department of Mechanical and Aerospace Engineering, Jacobs School of Engineering, Center for Renewable Resource Integration, University of
California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
Department of Mechanical and Aerospace Engineering, Jacobs School of Engineering, Center for Energy Research, University of California, San Diego,
9500 Gilman Drive, La Jolla, CA 92093, USA
Received 31 March 2014; received in revised form ... Show more content on Helpwriting.net ...
In this work, the application of re–forecasting advanced here is diп¬Ђerent than the one used for meteorological models. Reforecasting in meteorology
is used over long periods of historical data to п¬Ѓne tune the parameters of deterministic models, while here the proposed reforecasting is a method to
statistically improve predictive model in real–time using optimized stochastic learning techniques. In this work, the reforcasting operates as adaptive
Model Output Statistics (MOS) enhancers for each of the baseline forecasting models.
Accordingly, reforecasting is applied for 3 distinct intrahour forecast horizons (5, 10 and 15 min ahead) of power output for a photovoltaic power
station in Boulder City,
Nevada. The data used for model development and testing are discussed in Section 2. The three baseline forecasting models: a cloud tracking based
deterministic model (Det), an Autoregressive and Moving Average model (ARMA), and a k
–th Nearest Neighbor model (kNN) are described in
Section 3. Section 3 also covers the smart

Solar Power And Solar Energy
Solar energy is capable of providing a cleaner energy than most forms of energy generation, and solar energy is able to be generated economically.
Solar energy reduces the amount of harm to the environment from energy generation, by providing a cleaner alternative. Solar energy also provides
jobs for construction and installation of solar powered technologies. The cost of installing solar panels can vary greatly, but its long term benefits
outweigh the costs. Typically a solar panel system is a three kilowatts to eight kilowatts system that cost fifteen thousand to forty thousand dollars to
install, total cost depends on circumstances of installation. However tax credits and incentives help recoup a portion of the cost in the first year, the
savings of electricity cost makes installing the system profitable in under 10 years (Maehlum). Purchasing the system requires a large loan, however
paying the loan can be substantially better than paying utility bills when the investment will eventually be paid for. If the system is large enough to
handle the requirements of the household, the only payment for electricity will be the cost of the loan. Making loan payments instead of paying
utility bills is predictable, and any excess energy will be used as a credit for months were the owner 's energy use may exceed the generated amount.
Within10 years of financing the solar panels, the cost of the solar panels will already made up by the cost savings from not paying for utility

Disadvantages Of Solar Power
Solar Power was it a blessing in disguise or will it end up being a desolation for the entire civilisation?
Whenever a new advancement is introduced, without a doubt, an impact is being made on the society, although it really makes our lives a whole more
better and easy but one cannot really ignore that there are a number of ways in which it could negatively impacts our society. As a matter of fact, we
experience this effect in our daily lives. It has an effect on the growth of the economy, our culture and our living standards. It is however important to
consider that the benefits are an ambiguous in that the effects can detrimental and other being beneficial..
Solar energy has the possibility of radically changing the way the world gets ... Show more content on Helpwriting.net ...
Although solar energy is provided for an environmental friendly option however there are studies that reveal that it has health effect on humans as
they produce toxins furthermore it has implications on our ecosystems and the provision of goods, for example crops, and services, such as soil
carbon storage. As with any type of power plant, large solar power plants can affect the environment where they are located. Clearing land for
construction and the placement of the power plant may have long–term impacts on plant and animal life by reducing habitat areas for native plants and
animals. Power plants may require water for cleaning solar collectors or concentrators and may require water for cooling turbine–generators. Using
ground water or surface water in some waterless locations with major solar potential may affect the ecosystem. In addition, birds and insects can be
killed if they fly into a concentrated beam of sunlight created by a solar power tower. Another disadvantage is solar panels' dependence on the weather.
The more direct sunlight a solar panel receives the more power it can generate. When the weather becomes cloudy, the output of the panels is
dramatically

Science Fair Research Report: Solar Oven
Science Fair Project Research Report Rough Draft Many people these days have been wasting electricity for cooking for hundreds of years. Many of
them do not realize that they always did not have to cook with a stove, microwave, oven or any type of heating or cooling product. Instead, they should
have used the sun; it's everywhere and allowing us to use its energy to cook. So, here are some basics about solar energy. People have a tendency to
forget that they can use the sun's energy to heat up things. The sun has always been producing energy for billions of years and billions to come. The
energy that is from the sun that is used to heat up things is called solar energy. Solar energy is used for heating up water, spaces, and fluids. For water,...
Show more content on Helpwriting.net ...
The main purpose of a solar oven is to harness the sun's energy for free. It does not matter if it is a homemade or a product solar oven because they
both cook food completely if outside long enough. A solar oven is an oven that uses solar energy to cook or heat up things. The best time to use a
solar oven is between eleven a.m. through three p.m. Before cooking, make sure to leave the solar oven outside between thirty minutes through an
hour. To activate the solar oven, it has to be in direct sunlight so the sun can reflect off the reflectors. The sun's energy heats the inside of the solar
oven. Sunlight, both reflected and direct enters the glass or plastic top of the solar oven. The more the glass or plastic directly faces the sun, the
greater possibility that the solar oven will gain more heat. To make possibility greater add single or multiple reflectors to the glass or plastic top to
increase the internal temperature. To increase more heat, use a dark cooking pot. The reason to use a dark pot is because it will absorb the sun's
energy. The sunlight that was absorbed by the pot(s) is made into a longer wavelength heat energy that radiates the inside of the solar oven. The
sunlight is either absorbed by the materials in it, passed throughout the glass back, or wavelength does not change any bit. The heat input causes the
temperature within the solar oven to rise until the solar oven's heat loss is equivalent to the heat gain. This is the way that both homemade and product
solar ovens work ("How Solar Ovens Work – Solar Circle") ("Climate Kids NASA's Eyes on the

The Benefits Of Solar Energy
In today's modern industrial society vast amounts of energy are needed to make living more comfortable, productive and enjoyable. The increase in
energy consumption not only caused a global spike in energy costs, but also negatively impacted our environment. Climate change, the threat of an
unsecured energy supply and rising energy costs have emphasized the need for improved energy efficiency. Efficient energy use is essential as it
enables financial savings, preserves fossil fuel resources, and reduces air pollution. Reducing energy consumption and lowering Greenhouse gas
emissions are the two most important reasons to improve energy efficiency. Pollution is a major disadvantage of fossil fuels causing air pollution,
water pollution, damage to public health, wildlife and habitat loss, and global warming emissions. However renewable energy sources such as wind,
solar, geothermal, biomass, and hydropower provides sustainable energy services, of which solar energy is one of the cleanest, abundant and most
sustainable ways to generate electricity. The increase in oil prices, the depletion of fossil fuel, and increase in consumption of energy has led to finding
an alternate source of electricity generation through sustainable energy resources. The sun was humankind's first source of power, and with a little
effort to make it more efficient, it may be the only source of energy we may need for the future. Among various sustainable sources, solar energy is the
fastest growing,

Space Based Solar Power ( Sbsp )
Space–Based Solar Power It is no secret that the earth is in need of a new sustainable source of energy. There is a limited supply of fossil fuels on the
planet, and the energy–generating solutions that are currently in action are only decelerating the rate of consumption of nonrenewable energy. The U.S.
Energy Information Administration predicts that the earth will run out of useable fossil fuels by 2088 if the current rates of consumption continue. A
promising long–term solution to this crisis is space–based solar power (SBSP). To attain SBSP, satellites are sent up in space to obtain direct and
constant solar energy, then laser technology beams the gathered energy down to earth where it can be constantly and globally utilized. Space–based
solar power is not a new idea, the Department of Energy first studied it in the 1970s, and NASA took another look in the '90s. The stumbling block has
been less the engineering challenge than the cost (Sofge). Funding for space–based solar power is costly, but not unreasonable. As the current energy
on earth depletes and the urgency for a new sustainable source grows, there must be greater steps made towards a solution. Space–based solar power is
a viable solution to the world's looming need for a new energy source, but in order to make this idea a reality more funding is needed. "The challenge
is one of perception," says John Mankins, president of the Space Power Association and the leader of NASA 's mid–1990s SBSP study.

Advantage And Disadvantage Of Solar Energy
Concerns about the well–being of the environment have driven the world towards the use of renewable energy sources. The issue at hand was to
determine which salt, between CloKMag, FLiBe, and FLiNaK, would be the best option to be used in conjunction with a concentrated solar plant in
order to supply power to all 100,000 of Salt Bay's residents for the least cost. Since solar energy has been criticized for only being able to produce
daytime power, the addition of salt storage has allowed energy generation throughout the day. This power has to be available 24 hours a day, year
round. Through the use of mass and energy balances, the recommended salt was found to be FLiNaK, with a net cost per year of $147,000,000. In
order to break even, a utility cost on Salt Bay residents would be $0.16. This is 11% cheaper than the second least expensive option.
1. Introduction
CSP, or concentratingsolar power, plants are a modern method of generating energy through utilization of sunlight and thermal energy. With the
assistance from internal mirrors, solar energy is concentrated onto a small area allowing electricity to be created from the drive of steam turbines. There
are three main systems in which CSP plants occur: trough systems, power tower systems, and dish/engine systems. In the trough system, mirrors are
used to reflect sunlight onto oil–filled pipes in order to heat the pipes, and eventually, boil surrounding water to create steam to power the turbine. The
mirrors in power tower

Physics for Industries
INTRODUCTION
Physics attempts to describe the fundamental nature of the universe and how it works, always striving for the simplest explanations common to the
most diverse behaviour. For example, physics explains why rainbows have colours, what keeps a satellite in orbit, and what atoms and nuclei are made
of. The goal of physics is to explain as many things as possible using as few laws as possible, revealing nature 's underlying simplicity and beauty.
Physics has been applied in many industrial fields, which include the air industry, construction industry, automobile industry, manufacturing industry
and many others. All these industries apply physics in one way or another. For example a car that moves from one point to another has to... Show more
content on Helpwriting.net ...
The fluid moving over the top travels a greater distance than the moving just under the bottom of the wing. Consequently, the fluid moving over the top
must travel faster in order to conform to the shape of the wing and still maintain the natural streamline. The shape of the wing also crowds the
streamlines together above the wing, just as in the case of a constructing pipe. The result is that of the region immediately above the wing. Because the
downward force on the top of the wing is less than the upward force on the bottom, a net upward force, or lift, arises from the airflow. (Beyond the
airfoil the flowing air has a downward component of velocity. By Newton 's third law, the reaction force to the net downward force exerted on the
air is the lift.) For lift to occur, a flow of air is required relative to the wing. The lift occurs equally well for a wing moving through stationary air or for
moving past a stationary wing.
In general, as the flow of air past the wing increases, both the lift force and the drag force (the resistance to forward motion) increases. According to
Breithaipt (2000), aircraft wings are designed so that pilots can change the wing shape during flight, producing greater lift for the slower speeds of
takeoff and landing and producing less drag at cruising extended

My Perfect City Essay
My "Perfect" City
I. Utilities
The city I propose as a perfect city, would be as close to an ecocity as possible, although have some differences. For example, for electrical needs, I
would suggest the city have a solar power plant, but on those desperate times, energy would be bought from other electrical plants from nearby towns
or states.
Water purification and a wastewater treatment plants would be necessary in order to provide the citizens and visitors with clean healthy water. To
prevent flooding, this city was built on flood plains.
Solid waste pickup services will exist, preventing litter and garbage ... Show more content on Helpwriting.net ...
Paddleboats would be popular in the lakes and river. Walking and biking would be the most influenced form of transportation. Neighborhood stores
would be encouraged, promoting bike and walk transportation. No mass transportation systems will be found running through the city.
III. Density of Homes
Understandably, some people enjoy large lawns. For every 1 home that is built on an acre property, 2 homes have to be built on ВЅ acre property. The
homes will be built more northern and away from the river. Towards the southern part of the river will only be green space and nature preserves. The
city will have a medium density
IV. Businesses/Industry/Commercial
Tourism will be the major money catcher on the lake and riverside areas. Tourists will be attracted to the city's beauty and fun activities (see
aesthetics). Although tourism brings in a lot of money, small animal and vegetable farms will be maintained, providing the city with some of its food
portion. Gardens will also be kept at most of the homes. Not much food will be transported into the city. The city will try to be the most independent
possible. Building will use the solar heat method for water and space heating on those rare occasions when necessary.
V. Aesthetics

Advantages And Disadvantages Of Solar Energy Sector
HYBRID SOLAR WIND ELECTRICITY GENERATOR
D. Surrya Prakash, D. Praveen Kumar, B. Lokeshwaran
1Assistant Professor, 2, 3 Students, Veltech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai
–600062. India.
ABSTRACT: Man in his lifetime, uses energy in one form or the other. In fact whatever happens in nature, results, out of the conversion of energy in
one form or the other? The extensive usage of energy has resulted in an energy crisis, and there is a need to develop methods of optimal utilization,
which will not only ease the crisis but also preserve the environment. Several renewable energy resources like solar energy and wind energy etc. are
being used to obtain electricity. But these systems are expensive and also have low efficiency. Another major disadvantage is that these systems cannot
be installed everywhere as each of them ... Show more content on Helpwriting.net ...
RELATED WORK There are very few hybrid systems used throughout the world. They use solar panels to harness solar energy and turbines to harness
wind energy. But there capital cost is very high. This concept of using a single system to harness two different sources of energy using mechanics has
never been attempted before.
V.CONSTRUCTION COMPONENTS
5.1 CENTER CYLINDER:
This is the basic component of the construction. This cylinder is made up of steel and is fitted into ball bearing. There is an extended portion of the
cylinder at the top where the projection cylinder is placed. The centre cylinder has the bevel gear fitted on to it to enable power generation using
alternator.
5.2 PROJECTION CYLINDER: They are fitted on the top of the centre cylinder. They contain the spring and load set up inside them along with
empty space for the gas expansion. The diameter of each cylinder is 60 mm. They are made of steel and painted black in order to absorb maximum
solar radiation. They also have fins on the top and bottom surfaces to enable rotation using wind

Solar Energy And Solar Power
Introduction
Solar energy is defined as the transformation of the sun's rays into useful forms of energy, for instance, electricity and heat. The capacity of solar
radiation a place receives depends on a variety of factors such as geographic location, time of day, season, and local weather. According to Knier (n.d.)
photo voltaic and concentrating solar power cells are the two forms of sources to produce electricity. Photo voltaic cells generate electricity directly
using solar cells and concentrated solar power cells generate electricity using steam. According to The World Bank– for the past three years, India has
taken a enormous step in forwarding and in implementing the green growth agenda by producing 2,000 MW of solar power at the world's cheap tariff.
Solar power is likely to reduce India's usage of imports of diesel and coal. A number of measurements are probably taking to generate 20,000 MW of
solar power in future by 2022. The Solar industry is likely to create 200–400 jobs in the industries like research, development and installation, for every
10 MW of solar power generated. Hence, the government of India had taken enormous steps to increase the productivity of the solar energy. This
research report will discuss the effectiveness and the limitations of solar power in India
Advantages of Solar Power
(a) Long life and eco friendly
Solar panels are likely to have a long life and are eco friendly with the nature. Solar panels includes photo

Analysis Of Sunpower Corporation, An American Solar Energy...
Sunpower Corporation is an American solar energy company which manufactures, designs and deliver high efficiency solar solutions for homes,
businesses and utilities by being a global solar energy solutions company and technology leader. Sunpower was founded in 1985 by Dr. Richard
Swanson, a professor of electrical engineering at Stanford University and its headquarters situated in San Jose, California, and the Company also
operates in Africa, Europe, Asia, Australia, South America and North America. The main goal of the company was to commercialize solar concentrator
technology. (Sunpower Corporation, 2016; SRI World Group Inc, 2016; Ellen MacArthur Foundation, 2015) Solar cell or photovoltaic (PV) systems
usually transformed energy from the sun in to electric current. It can be measured in terms of ''conversion efficiency'', the proportion of solar energy
transformed to electricity. (Henderson, Conkling, & Roberts, 2007) Sunpower primarily focused on the production of solar cell. But by moving in to
wafer manufacturing it soon incorporated in to manufacturing of solar power module units. In general Sunpower manufacturing process needed
approximately two times as many steps as the usual solar manufacturing process need and many of these steps were distinctive to Sunpower. Sunpower
has nearly 15 –20 established cell manufactures, a handful of silicon – based cell manufacturing upstarts and a number of thin film solar companies
offering potentially unsettling technologies.

Solar Warming Essay
Article Critical Analysis
The title of the article is 'Potential of Utilizing Solar Cooling in the University of Jordan'; this article is published in 'Energy Conversion and
Management' journal in 2013. This article is written by collaboration between many researchers and professors in two universities in Jordan; The
University of Jordan and Al–Zaytoonah Privet University of Jordan. This article available online from SienceDirect search engine. The authors wrote
this article to investigate the ability of utilizing the solar energy in cooling purposes in order to ameliorate the air quality inside the building.
The article study is conducted in a scientific research in the University of Jordan called Hamdy Mango center. The data is ... Show more content on
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The article is well structured; the abstract of this article includes a motivation for the study, problem statement, study approach or how this research was
conducted, the results of this research and finally the implication related to the results they obtain, all these elements make a high quality abstract.
Then, the introduction in this article is divided into three parts; firstly, a background for the whole topic, secondly, the literature review and that was
including nine previous studies, finally, the goal of the work. Thereafter, a theoretical background includes the theory that the researchers rely on to
conduct their study, the gap of the study, and followed by the importance of the research. Subsequently, the results take the majority of the article due to
significance of this section.
The article is very credible source because of the credentials of the authors, the article is relatively culture, it is a peer reviewed paper, most of the
references includes in this paper are published within the past 10 years, the audiences in this paper are the

Renewable Energy : Improving Solar Energy
Kwaku Sefah Jr
Major: Math
November 27, 2014
Topic: Solar Energy
Improving Solar energy in the United States
Audience: Home owners
Executive Summary:
Solar energy has been in existence for a longer than any of us will imagine. Of course the sun is the oldest and most basic source of energy. Solar
technology has been in existence since the 7th century B.C. Solar energy is a clean and renewable energy that does not have most of the problems
fossil fuels have. There are three types of solar technology that can be utilized in both our homes and businesses. The three types of solar energy are
solar thermal and solar electric which can also be called photovoltaic (PV) and passive solar energy. Solar energy is developing and could be used as
an alternative for fossil fuel which emits dangerous gasses into the atmosphere. I will be discussing about the benefits, problems and how solar energy
can be improved in the United States.
Introduction:
The sun has been around since the beginning of time and it is one of the most efficient ways of generating electric power. Passive solar energy is
simply the heating of home and buildings through architectural designs. Solar thermal energy is where the sun rays are used to heat our homes and
water. It uses solar thermal collectors to collect heat energy and disperse it through our heating and plumbing system. This type of solar energy is very
cheap and can be afforded by home owners. Solar photovoltaic uses the sun rays to electricity

Energy, Reliable, Sustainable And Modern
This goals' objective is that everyone will have access to energy, and that the energy will be affordable, reliable, sustainable and modern. This is a
very hefty goal to achieve, only made harder by the goal's five targets. Targets are supposed to be measureable indicators of whether or not the goal
can be achieved. I believe that targets 7.1 and 7.2 are not truly measureable until certain aspects of the target have been defined. Target 7.1 aims to
ensure universal access to affordable energy. The reason that this cannot be measured is twofold. First, the word "affordable" needs to be defined.
The amount of money that countries and people can afford to allocate to energy differ vastly; what may be an acceptable price for one person or
one country may be drastically too high for another. The second reason this target is not measureable is because of the word "universal". Universal
means that everyone will have access. In 2015, it is estimated that there are 7.2 billion people on Earth. I believe that it is unrealistic for the UN to be
able to determine if every single person has access to energy, let alone if the energy is affordable/ sustainable, etc...Target 7.2 aims to substantially
increase the share of renewable energy. Again this target cannot be measured until it is clearly defined. The word substantially is not easily measured
because there is no value to it. Does substantially mean an increase by 5%, 70%, is it measured in terms of money, percentages, or other units?

The Energy Generator Ofgem Announced
Energy, especially electricity, is vital in today's economy however demand for electricity is currently so high that the available supply may not be
sufficient over the next 25 years. Electricity lights our homes, powers our technology and is a fundamental factor in everybody's day to day lives.
In 2012, the energy generator Ofgem announced that Great Britain risks running out of energy. (Business, 2012). In theUnited Kingdom, equipment
which is used to generate electricity has suffered from years of under investment. This has resulted in an inefficient system that distributes energy
across the country. Most of the UK's electricity is produced by burning fossil fuels. In 2010, Energy UK reported that the UK currently use 47%
natural gas and 28% coal to supply the countries power. (Energy–uk.org, 2010).
In 2007, the United Kingdom Government agreed to an overall European Union target of generating 20% of the European Union 's energy supply
from renewable sources by 2020. The total of all renewable electricity sources provided for 14.9% of the electricity generated in the United Kingdom
in 2013, reaching 53.7 TWh of electricity generated. (Daley, 2015).
Renewable energy is energy generated from natural resources such as sunlight, wind, rain, tides and geothermal heat. Renewable energy technologies
range from solar power, wind power, hydroelectricity/micro hydro, biomass and biofuels for transportation. Solar power is recently becoming more
popular across the United

Advantages And Disadvantage Of Renewable Energy In South...
1.Introduction
South Africa is currently experiencing many problems and crises with its supply of sufficient and consistent energy. South Africa as a country can no
longer rely on its current electricity providers like Eskom to provide it with sufficient daily energy. The main problem is that in South Africa the main
resource for obtaining electrical energy is through the burning of fossil fuels like coal, oil and gas. In this report there will be an examination of many
alternative methods for obtaining energy in this country that is not only more sustainable but more or less completely renewable. Renewable energy is
the logical step forward for South Africa.
2.General overview of renewable energy
2.1 Definition of renewable energy. Renewable energy according to a report called 'Renewable energy and... Show more content on Helpwriting.net ...
It does not pollute its environment in any way, it doesn't disturb the eco–systems around it and is preferred over wind power in communities because it
does not make noise like wind turbines do. 4.2.Disadvantages
The disadvantages of solar is first of all the cost of solar panels and the installation of them. For many South African households it is not even
possible to afford solar panels so the possibility of every home with a solar panel system and providing itself with renewable energy falls a bit out of
reach. Although it is costly, the solar panels pay for themselves after the first 5 years and from then on your electricity is completely free and
environmentally friendly. It is also more secure than relying on Eskom to provide electricity at the current state of the national power grid.
There is almost the fact that the storage of energy in any type of solar energy household unit it not extremely effective. The batteries themselves can't
store a massive amount of energy and are very large and quite difficult to find any space for them in a normal home.
5.General

Can The Sun Arrange For Sufficient Power? Run A Business...
Can the sun arrange for sufficient power to run a business or home? The answer is totally yes. But it depends on the solar powered system and its
application. There are three elementary types of solar powered systems obtainable today, Grid–tie, Grid–tie with battery backup and Off–grid.
Deregulation and net metering laws make a grid–tie system eye–catching. If there is no utility in the least, then the choice would be clear, off–grid
inverter. If you want back up power in case of a power failure, then a grid–tie system with battery backup would be the commonsensical choice. For a
bit more clarification of the similarities and differences between all three systems, please continue to read.
Grid–tie is also called as grid interactive or utility interconnected. This works only in regions of the nation that permit net metering. Solar power turns
the electric meter backward when generating more power than used. A grid–tie system entails solar panels, a grid–tie inverter, fuses and a power cut
off switch. This kind of solar hybrid inverter is wired straight to the utility feed through the main breaker panels and utility meter. Grid–tie with battery
backup is a type of solar system that is approximately the same as the grid tie system with a few additions. Accompanied by the inverter and solar
panels, you would need 12–volt batteries, a battery charger and a solar charge controller. With the adding of the batteries comes a little more upkeep.
A solar charge controller is used so

Notes
I. OVERVIEW/ INTRODUCTION
As a tropical country, the Philippines has untapped vast potential of solar energy; yet in 1980's, solar application is beyond the bound of possible
solutions in rural, remote areas in the country.
Thus in February 27, 1981, Federal Republic of Germany and Republic of the Philippines entered into a contract to develop applications of solar energy
in the Philippines. This project was called the Philippine German Solar Energy Project (PGSEP) which was funded by the German Bundesministeruim
for Zussamenarbeit through the Gesselchaft for Zussamenarbeit, and Philippine Office Energy. The governing body of the said project was the
Philippine National Oil Corporation through its Energy Research and Development ... Show more content on Helpwriting.net ...
(Status quo)
Advantages
Less taxing
The firm can serve its market segment more efficiently and effectively
Less risky
Disadvantages
Opportunity loss
Failure to see the rapid changes in their markets
Passive approach on probable situation that could affect the company's operation
RECOMMENDATION
After careful deliberation, the group decided to choose the first alternative, Struktura, Inc. will serve as a local group that will undertake the PGSEP
commercially.
PLAN OF ACTION (IMPLEMENTATION)
Short Term
Develop a marketing scheme that will be used.
Validate the pricing strategy to be used before launching the product.
Prepare projected financial statements and examine other financial details of the project.
Determine the funding and capitalization requirements of the project.

Organize the necessary documents needed in the commercialization of the project and abide in the regulations of the government.
Test and verify 100% safety of the product.
Carry out product launching to introduce the product.
Long Term
Continuously intensify the promotions of the company.
Maintain and improve the good reputation of Struktura, Inc.
Evaluate the performance regularly.
Conduct further research and development.
XII. Proposed Operational Plans
Management
Anton Co will delegate Bingo to assist in the commercialization of the project.
Bingo Dimalanta should keep on reporting the

Solar Energy Essay
Another topic that DeBono talked about was the kind of electricity solar panels generate. "PV solar panels generate direct current (DC) electricity.
With DC electricity, electrons flow in one direction around a circuit" (DeBono). One interesting fact that DeBono stated was "AC electricity was
chosen for the U.S. electrical power grid, primarily because it is less expensive to transmit over long distances. However, solar panels create DC
electricity. How do we get DC electricity into the AC grid? We use an inverter" (DeBono). Since the United States usesalternating current electricity for
its electrical power grid, and solar panels generate direct current electricity. if we want to use the energy that is generated by the panels, we would need
to use a solar inverter to convert direct current electricity into alternating current electricity.
Overall, the solar panel system functions when sunlight shines its energy on solar panels, which would allow panels to generate direct current
electricity, then the solar inverter comes into play, and convert the direct current electricity into alternating current electricity. At this point, an
individual would be able to use the power that have been generated and converted, for their homes or businesses. One of the biggest concern that
people have regarding solar energy is that the initial cost for solar panels are expensive, but what they do not know is that the cost for solar panel
installation have been dropping down, and it does not look like they will stop dropping down anytime soon. According to Eric Wesoff and Stephen
Lacey in their article, "Solar Costs Are Hitting Jaw–Dropping Lows in Every Region of the World". "GTM Research expects a 27 percent drop in
average global project prices by 2022, or about 4.4 percent each year. Those improvements are not limited to the U.S. They are occurring globally, and
in some cases resulting in even sharper price declines than those America is experiencing" (Wesoff and Lacey). This shows that many experts in the
field of solar power have come up with a conclusion, which is the price of cost to install solar panel system will keep reducing all around the world.
According to Sara Matasci in her article, "2017 Average Cost of

Water Pollution Essay
Factories were created to have a bigger work force in one place rather than use the Putting out system. Originally located next to streams, factories
started using coal to power the factories instead of water power as it would produce more products faster. Coal was used because of its reliability to
power the factories. The overuse of coal caused widespread pollution across countries. As the industrial revolution progressed, other methods to power
machines were introduced. Some countries decided to stick with coal powered as they did not want to spend money on the new methods to power the
machines. As a result, the pollution increased and countries started to suffer from the bad air quality. China's factories did not switch to cleaner
methods and the pollution increased all over china. China has over 2 million across the country, but the majority of the factories run on the same
resource. Coal, since coal is powering the majority of the factories, the harmful toxins released in the air has caused widespread pollution throughout
china's towns. The pollution impacted china the most in 2013. "A cloud of smog had collected above the town of Beijing." (Beam __) The pollution
in china is not just from the factories. Some is from the production of electricity which comes from coal and nuclear power plants. The chemicals and
smoke from the power plants have polluted the environment and contaminated the water. "But it was also left many people with

Pros And Cons Of Green Energy
Solar energy is energy harnessed from the sun's rays and turned into power. This is considered green energy because green energy is a natural source
used for energy. Solar power works by special energy cells converting sunlight into a direct current to power houses. Basically the particles of sunlight
hits a solar panel. The solar panel then turns this into a direct current which is then used to power electronic things. Solar energy is used very often and
has been a growing economy for years. A lot of Americans are now switching and jobs are going up.
The future of solar energy is looking good, new advancements are coming out, people are switching and the field overall is improving. Some new
advancements for the future are stronger power. Thats right multi terawatt power in panels is one improvement engineers are working on for the
future. The panels will be cheaper and that means more affordable. More affordable means people save money and get more power! So more will
want to flock to this field and that's a major economy win. Not only will it be cheaper with more power they are also predicted to be easier to
produce to keep up with the crowds and having more products for the crowds is just what it needs.
The pros of solar energy is that it's renewable, it has a lot of potential for the growing market. Solar energy doesn't cause pollution and it can be
contained so we don't have too, too much. It's available all over the world too! Even though this pro is more of an upside to people in general is that
it's silent unlike most electric methods. Some cons of this energy is that it can be pricey sometimes, however they are working on it. Another con is
that it collects from the sun so it could be a problem when it's cloudy but it does save so you won't be powerless. Space is also a concern because
typically these large panels take up your roof but what if your roof isn't applicable it has to be on the ground or elsewhere.
To show solar to another green energy here is a compare and contrast of wind and solar.Wind power is more popular than solar in the USA and that is
a fact, but wind powers turbines take up way more space than solar panels. If the area you are in is not windy the wind power

Solar Power Importance
Solar power is an important aspect of life that people should consider putting in their homes. Solar power is the process of obtaining the energy from
the sun and converting it to multiple uses. It can be used to light, heat, and cool homes for cheaper than electric companies. Solar power is created by
using a device called a solar panel. Solar panels are used to soak up the sun's rays to create renewable energy for homes and businesses. Solar power is
saved during the daylight so that it can be used during the night. If it is a cloudy day; enough energy can be preserved. If it isn't, the solar panel can
still get the energy it needs if the sun's rays shine through the clouds. On a cloudy day, the thicker the clouds the less energy obtained(U.S. Department
of Energy,2009).
Solar power is mostly used in places with the most sunshine. For example, they are majorly used in places in the United States like California, New
Mexico, and Arizona. Another good place to have solar panels is in other countries, especially close to the equator. Close to the equator is a good spot
for the use of solar panels because the sun's rays are stronger there.
The process of creating the Solar panel is not an easy process. Solar panels are made up of mostly different types of silicon and glass–like substances.
The process of making them and installing them is costly, but after that they are done, they are fine. A photovoltaic cell is a cell that convertssolar
energy into electrical energy(

Film Analysis: Fast Fashion
1.Over the last century, the world of services had tremendously changed. Online dating companies, life coaches, party animators, wedding planners and
grave–side visitors didn't exist, even as ideas. Especially, rent–a–mom, rent–a–dad, rent–a–grandma, and rent–a–friend never was existed. These
services proliferate in a world that undermines community and believes in the superiority of what's for sale. According to Hochschild, "the more
anxious and isolated we are and the less help we receive from nonmarket sources, the more we feel tempted to fill the void with market offerings."
Greater isolations results in greater demand for market services and professionals to fill in what's missing. The more hooked individuals get on what
the market sells, the more convinced people are that paid expertise is what they lack. The greater people's dependence on... Show more content on
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Three of the three costs of Fast Fashion are environmental pollution, chemicals on cotton or leather, abuse, and the crashing of buildings. In the film,
they showed the amount of factory buildings that were crashing due to them not being maintained. Sadly, people were in the buildings, causing
thousands of people to be killed. Actually, one of the ladies working in the factories said that she was trapped under the remains of the building
when it crashed. She said so remember not being able to have the strength to scream or cry. However, she lived but, she lost two of her legs. Also,
rivers in India were polluted from chemical used in the factories. The pollution caused individuals to have jaundice, rashes and boils. Lastly, the
employees were mistreated and abused. They stated that they worked in poor conditions, they received low wages, and it was a job solely for people
with no alternatives. For instance, Shami was introduced in the film. She had a little daughter and sometimes she would carry her to work when she
had no one to babysit her. She stated that the owners would beat them with chairs, sticks and

Personal Narrative: Building A New Middle School
If I were to build a new middle school in San Marcos, CA where I live, I would power and heat the building by clean energy such as solar and wind
power. I prefer to use solar and wind energy because it is cleaner source of energy and is less costly than the current way of powering buildings which
is by electricity.
Solar energy is power obtained by harnessing the energy of the sun's rays, and turning it into clean energy, In Southern California, we are very lucky
because we live in a climate that has a lot of sunny days. Solar panels could be put on the roof of the buildings, in the glass windows, on the
sidewalk, and disguise them in fake palm trees as leaves, which also creates more shade.. I think it would be really creative to put solar

Sundison Swot Analysis Essay
SWOT analysis: SunEdison
Strength
The cost of solar panels has dropped 75% in the last six years. (Sunedison.com)
The performance of solar panels has also increased by 50% in the last six years. (Sunedison.com)
According to their website, they are very innovative. Their latest innovation is a technology called "high pressure fluidized bed reactor" that produces
"the world's most cost–effective silicon, which is the key ingredient in solar panels." (Sunedison.com)
SunEdison puts their "ideas into actions." In 2014 they built the largest solar plant in South America, which generates enough energy to power 20,000
homes. (Sunedison.com)
SunEdison also focuses on doing well for the community. Their latest project is to bring solar electricity ... Show more content on Helpwriting.net ...
(energymatters.com.au)
"A lot of scope for engineering innovation in process heat application." (Patil, 2015)
Trends in clean energy. ( Pernick, 2015)
Threats
People don't want to spend the time or money putting up solar powered panels in their homes. It would seem like too much of an effort.
Unexpected climate changes and global warming. (epa.gov)
The average person has less of a desire to use solar energy.
Threats of new competitors. (nasdaq.com)
Threats of substitutes for solar power especially if there are cheaper alternatives. (greenrhinoenergy.com)
Competition with existing competitors. Which according to nasdaq.com are companies such as actions semiconductor Co, Altera Corporation and
more. (nasdaq.com)
Applying the SWOT analysis SunEdison as a company has many strengths that can help them grow and become more successful. The fact that the
cost for solar panels have dropped by 75% in cost and increased by 50% in effectiveness in only the past six years is a great strength, because many
people want to be more earth friendly but don't want to pay a fortune. Solar power energy is a growing business, and for all the weaknesses and threats
they have, there are strengths and opportunities. Personally, I believe that their website is a great strength. The internet is how everyone finds out their
information nowadays and spending time on making their website very easy to use and appealing will continue to help them. For example, a weakness

Compare and Contrast Essay
"Compare and contrast solar power with coal powered energy"
Energy is an important factor in todays society, it is neccesary to power business, manufacturing and the transportation of goods and services all
around the world. Solar powered energy is energy from the sun. This energy can be conerted into different energy like heat and electricity. Heat can be
used to heat water or heat spaces, for example heating for houses, buildings or even swimming pools. Solar energy can be converted in two ways, by
Photovoltaic or "solar cells" which change sunlight directly into electricity or by concentrating solar power plants which generate electricity by using
heat from solar thermal collectors. Coal powered energy has played an important role in ... Show more content on Helpwriting.net ...
Electricity costs in the United States average 7 cents per kilowatt–hour. A currently inexpensive solar system running at an average of 30% peak
capacity due to no sun at night or cloudiness which produces 3 kilowatts will cost $6,552. This system will take about 10 years before it costs less
than paying for electricity which has been made from coal. However there are some cases where solar energy makes economic sense. Photovoltaics
power remote data storage devices can be highly beneficial where electricity is not available such as poor developing countries. Countries such as
Africa use inexpensive solar collection devices for cooking and heating water, special design of new houses and buildings can greatly reduce the cost
since much of the house becomes an effective solar collector. At the moment the price of coal is relatively cheap and stable due to easy access and an
abundant amount that will last up to 250 years longer. Although solar energy is at disadvantage right now, the availability of "free" sunlight will
continue to contribute to the development of new ideas that can make solar power more affordable in the future.
The biggest concern associated with coal energy is the affect it has on the environment. It is a dirty fuel that pollutes the air, water and land. Burning
coal releases harmful waste such as carbon dioxide, sulphur dioxide,

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