Enter the absorbed heat (J) and the input heat (J) into the calculator to determine the Furnace Efficiency.
- All Efficiency Calculators
- Heat Rate (Efficiency) Calculator
- Thermal Efficiency Calculator
- Condenser Efficiency Calculator
Furnace Efficiency Formula
The following formula is used to calculate the Furnace Efficiency.
Efurnace = Qa / Qi * 100
- Where Efurnace is the Furnace Efficiency (%)
- Qa is the absorbed heat (J)
- Qi is the input heat (J)
How to Calculate Furnace Efficiency?
The following two example problems outline how to calculate the Furnace Efficiency.
Example Problem #1:
- First, determine the absorbed heat (J). In this example, the absorbed heat (J) is given as 40.
- Next, determine the input heat (J). For this problem, the input heat (J) is given as 50.
- Finally, calculate the Furnace Efficiency using the equation above:
Efurnace = Qa / Qi * 100
Inserting the values from above and solving the equation:
Efurnace = 40 / 50 * 100 = 80 (%)
Example Problem #2:
Using the same process as above, first define the variables required by the formula. In this case, these values are:
absorbed heat (J) = 50
input heat (J) = 100
Entering these values yields:
Efurnace = Qa / Qi * 100 = 50 (%)
