My name is Alexander Fufa

**eV**and here I will explain the following topic:# Carnot Efficiency

## Formula

## What do the formula symbols mean?

## Carnot Efficiency

`$$ \eta_{\text c} $$`Unit

`$$ - $$`

Carnot efficiency is the theoretical maximum efficiency achievable when converting thermal energy into mechanical energy.

## Temperature

`$$ \class{blue}{T_-} $$`Unit

`$$ \mathrm{K} $$`

Lowest temperature that occurs during the process.

## Temperature

`$$ \class{red}{T_+} $$`Unit

`$$ \mathrm{K} $$`

Highest temperature that occurs during the process.

**Explanation**

## Video

The **Carnot efficiency** \( \eta_{\text c} \) is the theoretically maximum achievable efficiency in converting **heat energy** \( \class{blue}{Q_-} \) into **mechanical energy** \( |W| \):

Formula anchor
$$ \begin{align} \eta_{\text c} ~=~ \frac{|W|}{ \class{blue}{Q_-} } \end{align} $$

Formula anchor
$$ \begin{align} \eta_{\text c} ~=~ 1 ~+~ \frac{ \class{red}{Q_+} }{ \class{blue}{Q_-} } \end{align} $$

The Carnot efficiency is determined by the temperature differences between the two heat reservoirs and can be regarded as the upper limit for any reversible thermodynamic process between these reservoirs:

Formula anchor
$$ \begin{align} \eta_{\text c} ~=~ 1 ~-~ \frac{ \class{blue}{T_-} }{ \class{red}{T_+} } \end{align} $$