How to calculate the best running power (economic power) of an industrial Generator Set?

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The best running power, also known as economic power, of a diesel generator set is the power output that provides the best fuel efficiency and cost-effectiveness. To calculate the best running power, follow these steps:

1. Determine the maximum power demand:

Identify the maximum power demand of the load that the generator will be powering. This will be the maximum amount of power that the generator will need to produce.

2. Determine the generator's fuel consumption rate:

Determine the fuel consumption rate of the generator at various power outputs. Typically, fuel consumption rates are provided in the generator’s specification sheet or manual.

3. Plot the fuel consumption rate against the power output:

Plot the fuel consumption rate against the power output to create a fuel consumption curve. The fuel consumption rate will increase as the power output increases.

4. Calculate the cost of fuel:

Determine the cost of fuel per unit (e.g. per liter, gallon, etc.).

5. Calculate the cost of electricity:

Determine the cost of electricity per unit (e.g. per KVA or KW hour).

6. Calculate the operating cost for each power output:

For each power output, calculate the operating cost by multiplying the fuel consumption rate by the cost of fuel and dividing by the power output. This will give you the cost of producing each unit of electricity.

7. Determine the most cost-effective power output:

Identify the power output that provides the lowest operating cost (i.e. the cost of producing each unit of electricity). This is the best running power or economic power of the generator.

By determining the best running power of the generator set, you can optimize fuel efficiency and cost-effectiveness, which can result in significant cost savings over time.

However it’s important to note that the most economic power output level may vary based on factors such as load demand, environment, and fuel quality, so it’s worth performing this analysis periodically to ensure that the generator is operating at its most efficient level.