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) 

To calculate the insulation efficiency, divide the temperature difference by the heat flux through the insulation.

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))