SEDL / STP / STP502-EB / STP32095S

Development of a Heat Release Rate Calorimeter at NBS

Parker, WJ
National Bureau of Standards, Washington, D.C.

Long, ME
National Bureau of Standards, Washington, D.C.

Pages: 17    Published: Jan 1972

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Abstract

The heat release rate calorimeter being developed at the National Bureau of Standards measures the rate of heat release for building materials exposed to radiant fluxes up to 10 W/cm² with a response time of a few seconds. The calorimeter and its operation are described and preliminary results are presented on the maximum one minute average heat release rates for a variety of building materials. Also given is the effect of irradiance on the maximum one minute average heat release rate of a wood fiber insulating board. The total heat generated by a pine specimen is compared with its heat of combustion measured with an oxygen bomb calorimeter. This heat release rate calorimeter has adequate sensitivity, accuracy, and time response to provide useful information on the heat release characteristics of building