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Developing charring rate models for Chinese species based on the thermodynamic theory
- Wen, Liulai, Han, Liuyang, Zhou, Haibin, Zhuge, Changjing
- Wood science and technology 2017 v.51 no.5 pp. 1117-1131
- calorimeters, equations, fire resistance, furnaces, heat transfer, models, prediction, timber management
- In respect of fire resistance and fire integrity, the charring rate is the most important property of timber. It has been a worldwide research focus to develop a charring model for predicting the charring rate. The objective of this study is to establish an integral charring model, which is based on a tailored thermodynamic equation for commercial Chinese timber species. At 50 kW/m² heat flux, results show that the cone calorimeter can equal the furnace trials for testing the charring rate and also establish a charring rate model with a relative error of less than 20%. The integral model at a heat flux of 50 kW/m² is safer to predict the charring rate than the other two models.