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

- All Efficiency Calculators
- Water Heater Efficiency Calculator
- Heat Rate (Efficiency) Calculator
- Chiller Efficiency Calculator

## 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:**

- First, determine the temperature difference (K). In this example, the temperature difference (K) is given as 132.
- 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.
- 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))