Enter the temperature difference (K) and the heat flux through the insulation (W/m^2) into the calculator to determine the Insulation Efficiency. 

Insulation Efficiency Formula

The following formula is used to calculate the Insulation Efficiency. 

Eins = dT / q

  • Where Eins is the Insulation Efficiency ((K-m^2/W))
  • dT is the temperature difference (K) 
  • q is the heat flux through the insulation (W/m^2) 

How to Calculate Insulation Efficiency?

The following two example problems outline how to calculate the Insulation Efficiency.

Example Problem #1:

  1. First, determine the temperature difference (K). In this example, the temperature difference (K) is given as 132.
  2. Next, determine the heat flux through the insulation (W/m^2). For this problem, the heat flux through the insulation (W/m^2) is given as 321.
  3. Finally, calculate the Insulation Efficiency using the equation above: 

Eins = dT / q

Inserting the values from above and solving the equation: 

Eins = 132 / 321 = .411 ((K-m^2/W))


Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are:

temperature difference (K) = 105

heat flux through the insulation (W/m^2) = 210

Entering these values yields:

Eins = 105 / 210 = .50 ((K-m^2/W))