Friday, June 26, 2020

society & environment {energy?

Rana Rudell: About energy in the context of electricity:The environmental impact of use of electricity is not the use itself but the way the energy is produced. Today electricity for your daily activities is provided by power plants. Each government has its own power plants and depending on the size of the country and the demand of the community (individuals and industry) it can have from one to dozens.Electricity is produced by different ways.1) by burning fuels like coal or other solid and liquid fuels or gases2) by controlling the heat expulsion of nuclear reactions3) by absorbing hydrodynamic forces like in power generation from watter dams (http://en.wikipedia.org/wiki/Hydroelectricity) or power generation from winds through Wind generators (http://en.wikipedia.org/wiki/Wind_power) and in tidal power generators (http://en.wikipedia.org/wiki/Tidal_power)4) by absorbing radiant light and heat from the sun like in Photovoltaics (http://en.wikipedia.org/wiki/Photovoltaic! s) or in solar thermal plants (http://en.wikipedia.org/wiki/Solar_thermal)I numbered these four categories in this order because of the percentage they hold in global energy production. Solid fuel power plants coupled with Nuclear power plants account for about 85%-90% of global electricity production (link: http://www.eia.doe.gov/oiaf/ieo/world.html)Now as you may expect electricity generated by burning fuels emits greenhouse gases most commonly CO2 which is a culprit for global warming. Electricity generated by Nuclear power has its own impact on the environment. Common nuclear reactors use radio active materials (isotopes) to produce heat which in turn is turned into electricity. The concept unfortunately produces also a lot of nuclear waste, which is still radioactive and has to be housed for long periods of time in specialy build facilities (see: http://en.wikipedia.org/wiki/Radioactive_waste_man... This has an environmental impact as radioactive waste management can l! ead to radioactive pollution of the environment if not done pr! operly.Also it is seriously expensive and is very often outsourced to countries of arguable capabilities (third world) or even illegally dumped. The other two ways of producing electricity are environmentally friendly, with no known environmental impacts and thus are labeled as green energy.So in the end as you use electricity to power your everyday appliances you actually use all the above facilities, poluting the atmosphere and potentially poisoning teh earths flora & fauna with radioactive waste.About energy in the context of fuels:We use fuels in our everyday lives to accomplish various activities like powering our car (petroleum) or cooking food (gas powered kitchen appliances) or keeping warm in the winter (AC burners / stoves). All fuel burning activities produce a varying plethora of gases like CO CO2 and wih this polute the atmosphere and feed the greenhouse effect. (further reading: http://en.wikipedia.org/wiki/Greenhouse_gas)So burning of fuels causes pollution o! f the atmosphere, aiding global warming.About energy in the context of electrochemical capacitors (batteries):The efficient storage of electricity has always been the Achilles heel of modern day electronics. Consumer Batteries operate through the conversion of chemical energy stored in arrays of electrochemical cells into electricity. Thus, the production of batteries includes the use of various Chemicals which are in general harmful to the environment after the battery's and of life. So the consumer use of batteries implies chemical polution of the environment if the used batteries aren't treated correctly (further reading http://en.wikipedia.org/wiki/Battery_(electricity)......Show more

Lissette Semon: They don't , its just that there is so much fraud going on regarding these issues and it's frustrating that liberals tend to believe anything that big brother gov't tells them . Google : C.A.R.B. fraud ( Calif. Air Resources Board ) . Get clued in , well intentioned p! eople are just being used to grow gov't , gov't could care less about t! he costs and ramifications of these things , but they know people like you will gobble it up because it sounds right .

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