Thermal contact resistance calculator

Calculate contact thermal resistance and interface temperature drop with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use contact thermal resistance and interface temperature drop to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Areal contact resistance (m²·K/W)
0.002
Contact area (m²)
0.1
Heat flow (W)
100
Contact thermal resistance (K/W)
0.02
Interface temperature drop (K)
2

Try another scenario

Areal contact resistance (m²·K/W)
0.0022
Contact area (m²)
0.1
Heat flow (W)
100
Contact thermal resistance (K/W)
0.022
Interface temperature drop (K)
2.2
Calculation method

Calculation method

Contact thermal resistance (K/W)

R=Rarea/A, deltaT=Q R.

Interface temperature drop (K)

R=Rarea/A, deltaT=Q R.

Symbols and units
a
Areal contact resistance (m²·K/W)
b
Contact area (m²)
c
Heat flow (W)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. R=Rarea/A, deltaT=Q R.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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