PCM Heat Sink Calculator

Thermal Storage  is required when the heat load is temporarily higher than  the continuous capability of the thermal control system.  Compact thermal storage systems use a Phase Change Material (PCM) with a high latent heat, which is frozen during normal operation.  During high heat loads, the PCM changes from solid to liquid, absorbing the heat with its latent heat.

ACT’s Phase Change Material heat sink calculator provides initial scoping estimates for your thermal storage requirements, including approximate volume, weight, and temperature profile.  The expected transient performance for three different PCM options suitable for your application is plotted. This calculator assumes a generally conservative fin design. ACT can design higher performing custom solutions than what is predicted by the PCM calculator. Please contact us for more information.

Note that this calculator provides PCM material options for values between -10°C to 85°C. For other applications, ACT has provided thermal storage systems operating at temperatures up to 550°C. Another constraint is that the initial temperature must be less than the final Temperature, so that the PCM heat sink is accepting heat, and the PCM is melting.  For applications outside of these limits, please contact the experts at ACT.

If you need instructions on how to use the calculator, please refer to this short instructional video.

This scoping tool is intended to demonstrate that different PCM materials offer a wide range of performance.  The thermal physical property values used are representative of the paraffin and salt hydrate materials that are most commonly used.  An optimized design will be dependent on each unique application.  ACT provides design and analysis services to determine the PCM for your particular application.  ACT does not manufacture or sell bulk PCM materials but integrates them into a custom heat exchanger or heat sink systems designed by ACT’s thermal engineers.

To discuss your results, please send your results to the thermal experts at ACT.

If you are having difficulty with this calculator please email us at info@1-ACT.com with your input values.


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