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No, it is not possible to construct a heat engine that will not expel heat in to atmosphere. according to second law of thermodynamics, all the practical heat engines absorb heat from the source, convert a part of it in to mechanical work and reject the remainder to the cold body or atmosphere. hence, no heat engine can operate with single source for conversion in to mechanical work without expelling heat to the atmosphere. in other words, their must be a temperature difference between the hot and cold bodies (source and sink) for the conversion of heat in to mechanical work.

Answer:

Hot air is generally not considered a pollutant. Any system that creates mechanical or electrical energy without using fuel would be considered pollution free.

A Sterling Cycle engine can use waste (recovered) heat to create mechanical energy. This creates no additional pollution and in fact, as it achieves higher efficiency in the original system, reduces additional fuel use and its associated pollution.

Electricity can be generated directly from waste heat by thermocouples of dissimilar metals, again increasing efficiency.

Waste heat can be used to boil water to steam for propelling turbines. This recovery creates no additional pollution.

Steam from geothermal sources or from solar arrays can alo power engines and turbines without pollution.

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Related Questions

Is it possible to construct a heat engine that produces no thermal pollution?

Atmospheric engines, or 'Stirling' engines, can make use of waste or naturally occuring heat differences, to work.


Is it possible to construct a heat engine that will not expel heat into the atmosphere?

is it possible to construt a heat engine that will not expel heat into the atmosphere


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Diesel is a lower grade of fuel than say, 95 octane unleaded, hence it creates more pollution.


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The engine in bigger cars are larger than of small cars as their engine is made up for heavy works.The cars engine powers denoted as CC (Cubic centimeters) as the power increases the engine uses more fuel, so it creates more pollution.


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Diesel Engine. Due to high caloric value it gives more high milage but it creates pollutions due to incomplete burningg of some gases.


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Can you? Yes, you can. Should you? No, you should not. It is first of all illegal and creates pollution. And your engine may not run as well without it as it did with it installed.


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The engine itself creates Vacuum once it is running.


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The engine compression creates enough heat for the fuel to combust.The engine compression creates enough heat for the fuel to combust.


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