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Large Fire Research Facility (Building 205) Exhaust Hood Heat Release Rate Measurement System (NISTIR 6509)



D W. Stroup, Laurean A. DeLauter, J Lee, G Roadarmel


Rate of heat release is a critical parameter for evaluation of the fire properties of a material. The Large Fire Research Facility at the National Institute of Standards and Technology operates three hoods capable of determining heat release rate from oxygen consumption measurements. This report describes the methodology and apparatus used to measure heat release rate. In addition, the results from several calibration tests conducted in each hood are discussed. The heat release rates determined from hood measurements range from 120% to approximately 60% of the theoretical values for the natural gas calibration fires.
NIST Interagency/Internal Report (NISTIR) - 6509
Report Number


fire data, fire tests, fire measurements, calorimetry, data analysis, heat release rate, large scale fire tests, oxygen consumption, uncertainty, experiments


Stroup, D. , DeLauter, L. , Lee, J. and Roadarmel, G. (2000), Large Fire Research Facility (Building 205) Exhaust Hood Heat Release Rate Measurement System (NISTIR 6509), NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed July 21, 2024)


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Created July 1, 2000, Updated November 10, 2018