Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Analysis of a Slug Calorimeter with a Curie Point



Jiann C. Yang, Thomas J. Ohlemiller


A lump-capacitance heat transfer model was developed to model the operation of a slug calorimeter constructed of metal with a Curie point. The resulting formula has been successfully used to infer total heat flux to a metal structural member in a fire by temporally monitoring the internal temperature rise during the heat-up phase of the metal member (slug) with embedded thermocouples. The formula derived is applicable to slug calorimeters made from metals with or without a Curie point.
Technical Note (NIST TN) - 2090
Report Number


Fire, heat capacity, heat flux, heat transfer model
Created April 3, 2020, Updated June 3, 2020