Fiberglas Insulation K Values

Overview

Engineering reference data for Fiberglas Insulation K Values in insulation.

Key Formulas

Thermal Resistance

$R = \frac{L}{kA}$

Resistance to heat flow.

Heat Loss

$Q = \frac{\Delta T}{R_{total}}$

Temperature difference / total resistance.

Variables

Thermal Conductivity Conversions

The thermal conductivity of fiberglass insulation can be converted between common units using the following formulas.

Celsius to Fahrenheit: $T(^{\circ}F) = \frac{9}{5}T(^{\circ}C) + 32$

Thermal Conductivity Unit Conversion: The relationship between SI and Imperial units for thermal conductivity ($k$-value) is: $1 \, \frac{W}{m \cdot K} = 6.935 \, \frac{Btu \cdot in}{h \cdot ft^2 \cdot ^{\circ}F}$

Material Properties

Fiberglass is a common thermal and acoustic insulation material produced by spinning molten glass into fine fibers. Its thermal conductivity ($k$-value) is a critical performance metric that generally increases with rising temperature.

References

• Original Source