summarize this paragraph: roughly 41% of all Commercial Energy is automatically
ID: 288094 • Letter: S
Question
summarize this paragraph: roughly 41% of all Commercial Energy is automatically waste because of the second law of thermodynamics. this means that Americans unnecessary waste about 43% (the rest of the total wasted 84%) they do this by driving gas-guzzling motor vehicles instead of gas in vehicles that get at least 15 km per liter (35 miles per gallon) the United States also uses very inefficient coal-burning and nuclear power plants to produce about 2/3 of its electricity. in addition most Americans live and work in poorly designed on underinsulated, and leaky buildings equipped with an efficient lighting, furnaces, air conditioners, and other appliances.
Explanation / Answer
84% =This percent of all commercial energy used in the US is wasted.
41% =This percent of energy waste is the US is unavoidable because of the second law of thermodynamics.the second law of thermodynamics allows us to know how well an energy system performs in terms of the quality of the energy.The temperature at which energy is available is a good measure of its quality — the higher the temperature of the energy, the more mechanical work we can theoretically get out of it. Thus a kilogram of steam at 1,000 degrees Celsius will produce more mechanical energy than steam at 500 degrees Celsius other things (such as pressure) being equal.
For example, one could use natural gas as a hydrogen source for fuel cells to generate electricity at 60% efficiency (second law). The electricity could then be used to “pump” the heat from the cold air outside up to the desired room temperature. (A heat pump uses electrical energy to pump up the energy present in outside air or soil to room temperature and transfer it into a building.)
43%= This percent of energy waste in the US is unnecessary due to the inefficiency of incandescent lights, furnaces, motor vehicles
Most of the American are relied over the heavy gas consumptive vehicles or u may say low to very low mileage vehicles such as mercedes and bmw etc which is just the wastage of the fuel in relative to the vehicle which r giving the mileage around 15- 20 kmpl. apart from this they r still very much dependent over the old and outdated , non mechanised coal- burning and nuclear power plants from which they accointed almost 66% of their electricity production.
A large portion of the energy is also wasted in making the places of living and working illuminated and cool ( during summers) and hot( during winters) by the uses of high electricity operated lighting devices, air conditioners, heaters etc, thos problem arose because the fact that their most of the houses are underinsulated, leaky buildings
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