Boiler Efficiency Calculator

Formula

The formula to calculate the boiler efficiency (E) is:

\[ E = \left[ \frac{Q \times (H - h)}{q \times \text{GCV}} \right] \times 100 \]

Where:

\( E \) is the boiler efficiency (percentage).
\( Q \) is the quantity of steam generated (kg/hr).
\( H \) is the enthalpy of steam (Kcal/kg).
\( h \) is the enthalpy of water (Kcal/kg).
\( \text{GCV} \) is the gross calorific value of the fuel (Kcal/kg).
\( q \) is the quantity of fuel (kg).

What is Boiler Efficiency?

Boiler efficiency is defined as the percentage of input energy that a boiler can convert into output energy in the form of steam. It measures how effectively the boiler converts the energy in the fuel into useful steam energy. A higher efficiency indicates a more effective boiler, which can lead to lower fuel costs and reduced emissions.

Example Calculation

Consider an example where:

Quantity of Steam Generated (Q): 5000 kg/hr
Enthalpy of Steam (H): 650 Kcal/kg
Enthalpy of Water (h): 60 Kcal/kg
Gross Calorific Value of Fuel (GCV): 8000 Kcal/kg
Quantity of Fuel (q): 1000 kg

Using the formula to calculate the boiler efficiency:

\[ E = \left[ \frac{5000 \times (650 - 60)}{1000 \times 8000} \right] \times 100 = 3.75\% \]

This means that the boiler efficiency for this example is approximately 3.75%.