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Solar

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by

christie schmidt

on 12 December 2013

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Transcript of Solar

Energy
Solar
Types of Solar Energy
Advantages
Solar energy is free
The production of the energy does not emit any pollutants
The energy can be produced in a remote area
You can sell the excess energy back to the power company
By: Ayashah Asmat, Gina Koh, Christie Schmidt
Pd. 7
Where it is Found....
When it is Used..
How it is Stored...
Disadvantages
The energy can only be harnessed during the daytime when it is sunny
Large areas of land are needed in order to capture the energy
In places with unreliable climates you will have unreliable solar power
Households
Transportation signals
Buoys
Lighthouses
Aircraft warning light structures
Road traffic warning signals
Pump water in remote areas
Factories or Warehouses
Waste Production
To dispose of the material, the companies must transport it by truck (using fossil fuels), and the greenhouse gases associated with transporting the waste is far from significant
A toxic sludge is created during manufacturing when metals and other toxins are removed from water used in the manufacturing process
Waste Production
To dispose of the material, the companies must transport it by truck (using fossil fuels), and the greenhouse gases associated with transporting the waste is far from significant
A toxic sludge is created during manufacturing when metals and other toxins are removed from water used in the manufacturing process
Waste Production
To dispose of the material, the companies must transport it by truck (using fossil fuels), and the greenhouse gases associated with transporting the waste is far from significant
A toxic sludge is created during manufacturing when metals and other toxins are removed from water used in the manufacturing process
Waste Production
To dispose of the material, the companies must transport it by truck (using fossil fuels), and the greenhouse gases associated with transporting the waste is far from significant
A toxic sludge is created during manufacturing when metals and other toxins are removed from water used in the manufacturing process
Passive Solar Heating
The heat from the sun is absorbed and stored straight within a structure.
Active Solar Heating
The solar collectors absorb the energy from the sun and then a pump will feed cold water through pipes. This cold water is then heated up by the sun's energy and then the heated water can be used to heat a building or for hot water.
Solar Thermal Systems
Sunlight is collected and centralized on to solar collectors. These high temperatures produces steam with water and this steam is used to run turbines which in turn produce electricity.
Photovoltaic Cells
Advantages

Disadvantages
Low air and water pollution
Energy is free
Moderate cost for passive
Quick Installation
Low land disturbances
Sun is not always present
High up front costs for active solar heating
Not attractive to look at
1. The solar panel is made up of semiconducting material so that when the photons in the sunlight hit it, they are absorbed
2. Electrons in the atoms are knocked loose which in turn causes an electrical potential difference. In order to cancel the potential a current is created and electricity is captured
3. The solar cells then convert the solar energy into direct current (DC) electricity
For PV energy a battery can be hooked up to the panels and it will be charged during the day
For solar thermal energy storage systems are heating up oil or molten salt because it will retain the heat energy during cloudy periods or at night
Net Metering- This is when an individual or business produces energy during the day, feeds it back into the grid, and then gets credited for the amount of energy produced
These renewable energy credits are what the energy producers will receive and sell to the utility companies because in certain states electricity suppliers are required by law to buy a certain amount of these credits
The average producer gets around $200-$300 for every megawatt hour of energy that they generate in a given year
Buying and Selling of Energy
Beginning in the 6th Century A.D. villages were built in order to gain maximum heat from the sun
In 1767 Horace de Saussure was credited with building the world's first solar collector
In 1839 Edmond Becquerel discovered the photovoltaic effect that is used in most solar panels
In 1954 the first photovoltaic (PV) cell was created and it was capable of converting enough of the sun's energy into electricity to run everyday electrical equipment
On August 7, 1959 the Explorer VI was launched into space with PV cells
In 1993 Pacific Gas & Electric installs the first grid-supported PV system in Kerman, California
Solar Energy Timeline
Solar energy is a renewable source of energy because it is harnessing the direct energy that comes from the sun.

The sun is over 90 million miles away from Earth, but it takes less than 10 minutes for its light to speed across that distance
Space missions have been utilizing solar energy in order to power spaceships since 1958
The largest solar power plant in the world is located in the Mojave Desert in California
Fun Facts
Waste Produced
- To dispose of the material, the companies must transport it by truck (using fossil fuels) therefore greenhouse gases are emitted.
- The waste from manufacturing creates a toxic sludge when metals and other toxins are removed from water used in the manufacturing process.
Full transcript