Mainly through the relatively low thermodynamic efficiency of heat engines (petrol, diesel, steam turbines, gas turbines), which waste at least 50% of the chemical energy of the fuel.
Engineers know that the efficiency is set by the upper and lower temperatures of the working fluid in the engine. They also understand the limitations of the materials available to make machines, which place limits on the temperatures and pressures that can be used.
Radiant energy is the safest energy for people and the environment.
water
When they cut down forests to put up the windmills you lose all the oxygen generating from the trees and the windmills that produce wind energy can only be used in that community; also the trucks bring in the parts for the windmills pollutes the environment.
radiant energy
I think that solar energy obtained through solar panel doesn't harm the environment.
Engines lose energy through friction, heat dissipation, and other forms of inefficiency in the conversion of fuel into useful work. This can occur due to mechanical losses in moving parts, aerodynamic drag, or incomplete combustion processes. Over time, wear and tear also contribute to reduced energy output in engines.
warm blooded
According to the theory of heat engines (read about "Carnot cycle" for more details), heat can not be converted 100% to other forms of energy. The remaining energy gets transferred from the "reservoir" of higher temperature, to the "reservoir" of lower temperature. The latter would be the environment. For example, if the heat engine works at 600 Kelvin, and the environment has a temperature of 300 Kelvin, in theory half the heat of the higher-temperature reservoir can be used. However, real engines have a lower efficiency than the theoretical maximum according to Carnot.
Animals lose energy simply by existing. The more strenuous the activity they are performing, the more energy they will lose.
Internal combustion gasoline, propane, or diesel engines. Electric motors. Steam engines, fuel cell engines are examples of energy sources.
Engines.
There are a few kind of environmentally friendly car engines. The first would be an electric engine, because it uses no fuel and is simply charged. Another is a hybrid engine, which uses fuel as well as electric or hydrogen. There are also compressed air engines (which are more environmentally friendly than electric) and solar energy engines.
No,they use engines to produce mechanical energy.
If you have a DIFFERENCE of temperatures, you can convert part of that energy to other types of energy, including electricity. In fact, that is how many engines work - steam engines, gasolene engines in cars, and even nuclear reactors.
All engines are bad on the environment, they exude used chemicals once fuel is burned. But with technology progressing as it is there is less impact on the environment today than there was 20 years ago.
The generic term is "heat engine". Most engines - for example, car engines - are in this category.
The generic term is "heat engine". Most engines - for example, car engines - are in this category.