- Author
- Parker, W. J.
- Title
- Wood Materials. Part A. Prediction of the Heat Release Rate From Basic Measurements.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
- Chapter 11,
- Book or Conf
- Heat Release in Fires, Elsevier Applied Science, NY, Babrauskas, V.; Grayson, S. J., Editors, 333-356 p., 1992
- Keywords
- heat release rate | fire protection engineering | wood | chemical composition | equations | experiments | cone calorimeters | oxygen consumption
- Abstract
- A number of progressively advanced HHR calorimeters have been designed and put into use, as discussed in Chapter 2. All of these measure the HRR per unit area as a function of external radiant heat flux (or, in a few cases, as a function of an exposure fire defined by its temperature). The corresponding net heat transfer through the flaming surface as required by any of the room fire growth models is not measured in any of these calorimeters. The heat release rate curves as a function of time at a particular external radiant flux are in general different for different calorimeters because of the different conditions under which the data are obtained. The variables include orientation and specimen size which affect heat feedback from the flame, boundary conditions at the rear surface, piloting arrangements, whether based on enthalpy rise or oxygen consumption, etc. A heat release rate model would be valuable in the analysis of the heat release rate calorimeters and in the interpretation of their measurements as well as in providing submodels for room fire growth models. At the same time the heat release rate calorimeters can provide a proving ground for the heat release rate model.