Heat pipe performance

ATS Heat Pipe Calculator (TMT)

Heat pipe performance calculator

Enter an ATS part number, or your own geometry, to get thermal resistance (°C/W), a ΔT vs. Q curve, and maximum heat load for your orientation and bends.

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Heat pipe

Part number

Operating conditions

Heat load, Q (W)

Pipe temperature (°C)

Vapor temp, 30–120

Evaporator length (mm)

Condenser length (mm)

Allowable ΔT, evaporator to condenser (°C)

ATS rates its heat pipes at 4 °C.

Heat input contact

Evaporator height above condenser (mm)

0 = horizontal. Positive = heat source above the fins (against gravity). Negative = gravity assisted.

Bends

–°C/W

Thermal resistance, evaporator to condenser

–°C

ΔT at your heat load

–W

Max Q, your ΔT limit, orientation and bends

–%

Load as share of max Q

ΔT vs. Q

Layout

Where the resistance comes from

Values are evaporator-to-condenser for copper/water heat pipes and exclude thermal interface and heat sink resistance. For design guidance; ATS test data governs.