Presentation on energy resources ppt .pdf
- 1. INTRODUCTION : An energy system is a set of conversion technologies that convert energy resources, such as energy from the sun, into forms that we can utilize for human needs. Have students research an energy question of their own with the Energy Sources Research activity Energy resources are available in our natural world Sources Research activity. Energy resources are available in our natural world. Solar energy is responsible for almost all of these resources. The sun is responsible for the uneven heating of the Earth that causes wind and sunlight and plant photosynthesis creates biomass materials such as wood or corn that we can convert into useable energy. For example, sunlight can’t be directly used as power for a radio. A solar photovoltaic panel must be used for energy conversion for usable energy.
- 2. ENERGY SYSTEM: ENERGY SYSTEM: An energy system is a system primarily designed to supply energy-services to end- users. In the field of energy economics includes energy markets and treats an energy system as the technical and economic systems that satisfy consumer demand for i th f f h t f l d l t i it Th fi t t d fi iti ll f energy in the forms of heat, fuels, and electricity. The first two definitions allow for demand-side measures, including day lighting, retrofitted building insulation, and passive solar building design, as well as socio-economic factors, such as aspects of energy demand management and even telecommuting.
- 3. ENERGY REOURCES: ENERGY REOURCES: Energy resources that are replenished at the same rate that we use them are defined as renewable energy resources. Solar, wind, geothermal and tidal energy are examples of renewable energy. Biomass can be renewable if we use the plant material at the same rate that it re-grows. But, if we chop down and burn all the trees in a short period of time, that resource is not considered renewable. , Fossil fuels are also a form of solar energy because they were generated from biomass materials millions of years ago. They are not renewable because we are using them at a much faster rate than they are being regenerated a much faster rate than they are being regenerated. TYPE OF ENERGY RESOURCES: • Fossil fuels – chemical (petroleum, natural gas, coal) U i l • Uranium – nuclear • Biomass – chemical • Geothermal – heat (generated from nuclear processes within the Earth) • Hydro – mechanical Hydro mechanical • Wind – mechanical • Solar - electromagnetic
- 4. DIFFERENT ENERGY TYPE : DIFFERENT ENERGY TYPE : BIOMASS ENERGY: Energy released from plants (wood, corn, etc.) through combustion or other chemical process. FOSSIL FUEL ENERGY: A non-renewable energy resource that began to form millions of years ago from the remains of once living plants and animals. Its current forms include petroleum, coal and natural gas. geothermal energy : Heat energy from the Earth. HYDROPOWER ENERGY: Transformation of the energy stored in a depth of water into electricity. NON-RENEWABLE ENERGY: Resources such as fossil fuels that cannot be replaced by NON RENEWABLE ENERGY: Resources, such as fossil fuels, that cannot be replaced by natural processes at the same rate it is consumed. PEAK OIL: The point at which the rate that a non-renewable resource (oil) can be produced declines due to the limitations of extraction processes and the availability of the resource. PHOTOVOLTAIC: A chemical process that releases electrons from a semi-conductor material in the presence of sunlight to generate electricity.
- 5. RENEWABLE ENERGY: Resources, such as wind and water, that can be recycled or replaced at a rate faster than they are consumed they are consumed. SOLAR ENERGY: Energy from the sun; often captured directly as heat or as electricity through a photovoltaic process. system component: One process in a system comprised of many processes or components. uranium: An element that releases heat as it undergoes radioactive decay. WIND ENERGY: Energy transferred with the motion of air in the lower atmosphere that arises from differential heating of the Earth. The energy in the wind can be extracted as mechanical energy to do work such as grind grains (a wind mill) or generate electricity (wind turbine) (wind turbine).
- 7. Engineering Connection: Energy "systems" developed by engineers are comprised of numerous components that work together to get the energy content of the energy resource converted into a form that is useful to the user and delivered to the customer. All of the components in the system must be carefully designed to work together effectively. y g g y Engineers are primarily responsible for the research, development and design of the equipment that captures energy from renewable and fossil fuel resources for human use. Given the eventual decline in the availability of fossil fuel resources, engineers are currently designing technologies for capturing renewable energy resources that are more efficient reliable and economically competitive efficient, reliable and economically competitive.
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