The formula to calculate Indicated Thermal Efficiency is:
\[ \text{IDE} = \frac{\text{BP}}{\text{Q}} \]
Indicated Thermal Efficiency is given by the ratio of indicated power generated by the engine to the power generated by the combustion of the fuel. Brake Power is the power obtained at the engine flywheel and is measured with the help of a dynamometer. Heat Energy is the amount of total heat required.
Let's assume the following values:
Using the formula:
\[ \text{IDE} = \frac{190000}{4200} \approx 45.2380952380952 \]
The Indicated Thermal Efficiency is approximately 45.2380952380952.
| Brake Power (watts) | Indicated Thermal Efficiency |
|---|---|
| 180000 | 42.857142857142854 |
| 185000 | 44.047619047619051 |
| 190000 | 45.238095238095241 |
| 195000 | 46.428571428571431 |
| 200000 | 47.619047619047620 |