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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.
What else can I help you with?
What type of energy may be safer for people and the environment?
Radiant energy is the safest energy for people and the environment.
What energy source was used to power steam engines?
water
How do windmills effect the environment?
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.
What type of energy will be safer for people and the environment?
radiant energy
What are the most efficient engines?
The most efficient engines are typically those that maximize energy conversion and minimize waste. Diesel engines, especially turbocharged and direct-injection variants, often exhibit high thermal efficiency due to their higher compression ratios. Additionally, gas turbine engines, used in jet propulsion, are designed for high efficiency at specific operating conditions. Electric motors are also highly efficient, converting over 90% of electrical energy into mechanical energy with minimal losses.
How do engines lose energy?
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.
Why do mammals and birds lose a greater percentage of the energy intake to the environment as heat?
warm blooded
Why most heat produced by heat engines are tranffered to the environment?
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.
How do animals lose energy?
Animals lose energy simply by existing. The more strenuous the activity they are performing, the more energy they will lose.
What energy source can you use in cars?
Internal combustion gasoline, propane, or diesel engines. Electric motors. Steam engines, fuel cell engines are examples of energy sources.
What converts energy into motion?
Engines.
What kind of car engines are the most environment friendly?
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.
Is it possible thermal energy change into electrical?
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.
Does external combustion engines use turbines?
No,they use engines to produce mechanical energy.
What is the motor that converts thermal energy to mechanical energy?
The generic term is "heat engine". Most engines - for example, car engines - are in this category.
What is the motor converts thermal energy to mechanical energy?
The generic term is "heat engine". Most engines - for example, car engines - are in this category.
What nutrient are passed from living things to the environment?
Sun hit the earth, plants use sun's energy to create sugar from organic compounds. Plants lose heat to the environment. Primary consumers eat the plants, and get energy from them, also loses heat to the environment. Secondary consumers eat the primary consumers, gain energy but also loses heat to the environment. Plants and consumers died and decompose, their body become nutrients for plants and the cycle start all over.
