## Power Output Calculation using Gas Flow Rate in ft³/h

To calculate the power output using gas flow rate in ft³/h, we first need to convert the flow
rate from
ft³/h to m³/h, and then use the simplified formula.

1 ft³ = 0.0283168 m³

## Conversion and Calculation

First, let's convert the gas flow rate from ft³/h to m³/h:

Qn (ft³/h) = Qn (m³/h) * 0.0283168
Qn (m³/h) = Qn (ft³/h) / 0.0283168

Now, let's calculate the power output using the simplified formula:

Power output (kW) = Qn x ηcomb x CV / 3.6

where:

- Qn is the gas flow rate in m³/h
- ηcomb is the combustion efficiency (gross or net)
- CV is the calorific value of the gas in MJ/m³

### Example

For example, for a gas flow rate of 1765 ft³/h, a combustion efficiency of 0.94, and a
calorific value
of 39 MJ/m³, the power output would be:

- Convert the gas flow rate from ft³/h to m³/h: Qn (m³/h) = 1765 ft³/h / 0.0283168 = 62.34
m³/h
- Calculate the power output: Power output (kW) = 62.34 x 0.94 x 39 / 3.6 = 643 kW

This simplified calculation does not take into account the gas pressure and temperature but
still
provides an estimation of the power output of the combustion system based on the gas flow
rate,
combustion efficiency, and calorific value when the gas flow rate is given in ft³/h.