How Does the Efficiency Formula Change for Reversible Heat Engines?

In summary, a heat engine is a device that converts heat energy into mechanical work through a thermodynamic cycle. It works by taking in heat from a high temperature source and converting some of it into work, while releasing the remaining heat to a lower temperature sink. The efficiency of a heat engine is the ratio of work output to heat input and is affected by factors such as temperature difference, working fluid, and design. However, the efficiency can never reach 100% due to the second law of thermodynamics.
  • #1
ajayguhan
153
1
efficiency n=1 -(q1/q2) for a normal heat engine

But how efficiency n=1 -(t1/t2) ? for reversible heat engine
 
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  • #3
When using the temperatures, you find the theoretical highest efficiency possible for a specific system.

When using the "Q" (heat), you find the actual efficiency of the system.
 

Related to How Does the Efficiency Formula Change for Reversible Heat Engines?

What is a heat engine?

A heat engine is a device that converts heat energy into mechanical work through a thermodynamic cycle.

How does a heat engine work?

A heat engine works by taking in heat from a high temperature source, such as burning fuel, and converting some of that heat into mechanical work. The remaining heat is released to a lower temperature sink. This process is repeated in a continuous cycle.

What is the efficiency of a heat engine?

The efficiency of a heat engine is the ratio of the work output to the heat input. In other words, it is the percentage of heat energy that is converted into mechanical work.

What factors affect the efficiency of a heat engine?

The efficiency of a heat engine is affected by several factors, including the temperature difference between the heat source and sink, the type of working fluid used, and the design and construction of the engine.

Can the efficiency of a heat engine be 100%?

No, the efficiency of a heat engine cannot be 100% due to the second law of thermodynamics, which states that it is impossible to convert all heat energy into work. Some heat must always be released to the lower temperature sink.

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