Renewable vs nonrenewable2
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This document compares renewable energy sources like wind and solar to a nonrenewable source, natural gas. It defines renewable resources as naturally occurring and theoretically inexhaustible, providing examples of wind and solar energy. Wind energy is harvested through turbines that convert kinetic wind energy into electrical or mechanical energy. Solar energy is harvested through solar panels that convert sunlight into electricity. Both have minimal environmental impacts but high upfront costs. In contrast, natural gas is defined as a nonrenewable resource with limited supply that cannot be replenished at the consumption rate.
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The document discusses solar energy and solar cells. It explains that solar cells work by creating electron-hole pairs when light hits the cell, which are then swept away by an electric field to produce electricity. It also explains that solar energy comes from the sun and is captured on Earth. Solar energy systems require both a collector to absorb sunlight and convert it to another form of energy, as well as a storage unit, as the amount of solar energy available fluctuates. The document concludes by discussing the importance of conserving energy and developing renewable sources like solar to ensure future energy needs are met sustainably.
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Solar energy can meet a significant portion of the United States' energy needs. It works through passive solar heating systems that use sunlight to directly or indirectly heat buildings, and active solar systems that use photovoltaic cells to convert sunlight into electricity. Photovoltaic cells are made of silicon and use the photoelectric effect to generate electricity from sunlight. When combined into modules and arrays, solar cells can power individual homes or be connected to the electric grid to supply power more broadly. While solar energy has high upfront costs, it has many benefits including reduced environmental impacts and increased energy security.
Solar and Wind Energy Resources
This document summarizes solar and wind energy resources. For solar energy, it describes how solar panels convert light energy from the sun into electrical energy via the photoelectric effect. It lists some uses of solar energy including for heating, lighting, and desalination. Key advantages are that it is renewable and produces no pollution, while disadvantages include its intermittent nature and needing space. For wind energy, it explains how wind turbines convert the kinetic energy of wind into mechanical then electrical power. Wind energy also has advantages of being renewable and producing no emissions, while disadvantages include dependence on wind conditions and potential impacts on land use and wildlife. Examples of large solar and wind farms are provided.
Solar energy ppt
The document discusses the benefits of solar energy as a renewable resource. It states that solar energy has the potential to meet humankind's total energy demand given that the amount of solar energy that reaches the Earth's surface in one hour exceeds our total annual energy consumption. It then provides an overview of the two main categories of solar power: solar thermal and solar photovoltaics. Solar thermal is used for water heating and cooking while solar photovoltaics generate electricity. The document outlines various passive solar applications and active solar thermal and photovoltaic technologies to harness the sun's energy.
ENERGY PRESENTATION
This document summarizes different types of energy sources including renewable and non-renewable sources. It describes various power generation methods such as hydroelectric, wind, solar, geothermal, biomass and discusses their advantages and disadvantages. The text also discusses transmission of electricity through grids and the environmental impacts of the current energy system which relies heavily on non-renewable sources like coal and nuclear power. It emphasizes the need for more sustainable energy sources to address issues like resource scarcity and pollution.
Better use of solar energy
The document discusses better ways of using solar energy. It notes that solar energy is a renewable resource that can meet humanity's energy needs. However, solar energy currently only provides 0.8% of global energy sales due to limitations of present solar technologies. The document proposes ways to improve solar energy usage, such as placing more solar panels on buildings, in remote areas, deserts, and splitting sunlight into frequencies to increase panel efficiency. Government support is suggested to expand solar power applications.
RenewableEnergy.pdf
Renewable energy comes from sources that are naturally replenished such as sunlight, wind, rain, tides, waves and geothermal heat. Renewable energy sources include hydropower, solar power, wind power, tidal power, geothermal energy and biomass. Renewable energy is an important source of energy because it is clean, naturally occurring and replenishes itself.
Project 3
The document summarizes different types of energy sources including renewable and non-renewable sources. It discusses various forms of energy such as kinetic, gravitational potential, thermal, chemical, electric, light, and sound energy. It then describes renewable energy sources like solar, wind, water, waves, tides, biomass, geothermal, and earth heat energy. Non-renewable sources including fossil fuels like coal and petroleum are also examined. Electrical energy generation from thermal, hydroelectric, and nuclear power plants is outlined as well as transmission and distribution of electric energy.
Energy conversion
The document discusses various aspects of nanotechnology in energy conversion and storage. It describes how nanotechnology can improve rechargeable batteries through the use of nanomaterials in electrodes and electrolytes, leading to increased conductivity and energy/power density. It also discusses supercapacitors and how nanomaterials such as carbon nanotubes can enhance performance. The document concludes by discussing how nanotechnology may contribute to more efficient hydrogen storage and sustainable energy production through improved energy storage capabilities.
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Renewable vs nonrenewable2
- 1. Renewable vs. Nonrenewable Energy By Alice Foss
- 2. Renewable Resources • Definition: Any natural occurring, theoretically inexhaustible source of energy, as biomass, solar, wind, tidal, wave and hydroelectric power, that is not derived from fossil or nuclear fuel. • Examples I am using today to compare *Wind Energy *Solar Energy
- 3. Wind Energy • What is it? *Wind energy is a form of energy conversion in which turbines convert the kinetic energy of wind into mechanical or electrical energy that can be used for power. • Where does it come from? *Wind energy comes from the Earth, wind is all around us. The wind is converted into power by the turbines. • How is it “Harvested”? *Through the turbines that convert the wind energy into mechanical or electrical energy that can then be used for power. • Benefits *Minimal harm is caused to environment because it is a natural and renewable resource, wind is free, the greatest benefit is that wind energy will never run out. • Downfalls *Although wind is free it can be pricy to obtain and maintain.
- 4. Solar Energy • What is it? *Solar energy is energy derived from the sun in the form of solar radiation. • Where does it come from? *Solar energy comes from the sun. The solar panels absorb the solar radiation used to create the energy usable for power. • How is it “Harvested”? *Solar/Photovoltaic cells convert sunlight directly into electricity. A majority of photovoltaic cells are primarily made of silicon. When the sunlight comes in contact with a cell, the energy makes electrons free of their atoms, which allows them to flow through the material. The resulting direct current electricity is then sent to a power inverter for conversion to AC. • Benefits *Sunlight and Sun radiation is free, and can be repeatedly reused, it also cuts down on your electric bills, can help utilities avoid brownouts and blackouts, and there is minimal harm done to the environment because it is naturally occurring. • Downfalls *Solar energy doesn’t have many downfalls only that it might be hard to maintain your solar panels.
- 5. Nonrenewable Resources • Definition: Any natural resource from the earth that exists in limited supply and cannot be replaced if it is used up; also, any natural resource that cannot be replenished by natural means at the same rates that it is consumed. • Example I am using today to compare *Natural Gas
- 6. Natural Gas