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Carnot's heat engine has more efficiency then the other heat engine but it is assumption. Is is not real.
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∙ 14y ago
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What is thermal efficiency?
Thermal efficiency is the efficiency of a heat engine measured by the ratio of the work done by it to the heat supplied to it.
What is the definition of thermal efficiency?
the efficiency of a heat engine measured by the ratio of the work done by it to the heat supplied to it.
What happens to the efficiency of a heat engine when the temperature of the reservoir into which heat energy is rejected is lower?
Efficiency would increase.
Machine that transforms heat into mechanical energy?
A ficticious heat engine that works at the maximum theoretical efficiency is called a Carnot engine. Real engines, that obviously work at a lesser efficiency, include the combustion engines found in cars.A ficticious heat engine that works at the maximum theoretical efficiency is called a Carnot engine. Real engines, that obviously work at a lesser efficiency, include the combustion engines found in cars.A ficticious heat engine that works at the maximum theoretical efficiency is called a Carnot engine. Real engines, that obviously work at a lesser efficiency, include the combustion engines found in cars.A ficticious heat engine that works at the maximum theoretical efficiency is called a Carnot engine. Real engines, that obviously work at a lesser efficiency, include the combustion engines found in cars.
Why efficiency of carnot heat engine is always greater than that of an actual engine?
The efficiency of a Carnot engine is theoretically always greater than that of an actual engine. The fact that it is impossible to build a thermodynamically reversable engine, which is one of the variables necessary to calculate its superiority to a real heat engine, makes the theorum practical for assessing a real heat engines efficiency only.
What effect if any does this energy transfer have on the overall efficiency of the car engine?
As a "heat engine", a car engine must rid itself of heat to continue. Efficiency of the heat engine depends on the difference in temperature; therefore, as the temperature outside reaches the temperature inside, the engine stops.
What is the difference between cofficient of performance and efficiency?
The COP can be more that one since the heat transferred can be more than power required by the refrigerator but the efficiency can never be more than one since the power generated by engine cannot be more than the total heat content of the fuel.
Why efficiency of heat engine is more in winter as compare to summer?
Because a thermal engine efficiency is directly linked to the difference of the temperature of the gases involved .As the gasoline burns at a set temperature , the lower winter temp helps to widen the temp differential between the ignited gasoline and exaust. Unfortunatley the colder air is more dense and generate more drag than in summer , more than negating the increased engine efficiency. To put it in rough numbers , you may get 0.5% more engine efficiency but you lose some 4% more to extra drag.
What is the coal energy efficiency?
If it is burned - which is the way such fuels are usually used - the energy efficiency is the energy efficiency of a heat engine. The theoretical maximum efficiency is the Carnot efficiency; the real efficiency will usually be considerably less than that.
What factors reduce the efficiency of a heat engine from its ideal value.?
friction, imperfect insulation
What is the max efficiency of heat engine?
Currently predicted at 60% in real world operation.
What is efficiency of lawn mower's engine when the heat input is 1000 joules and the waste heat is 750 joules?
25 percent
