Nist · NIST AI
Secure.gov websites use HTTPS A lock or https:// means you’ve safely connected to the.gov website
Compiled by KHAO Editorial — aggregated from 1 outlet. See llms.txt for citation guidance.
★ Tier-1 Source
The NIST Material Flammability Characterization project calibrates, maintains, and uses a variety of experimental apparatus that allow for the determination of material properties relevant to pyrolysis modeling.
Key facts
- IInitial results demonstrate up to 65 % variations in ∆Hc,gas measured for these fuels (consistent with values reported in the literature) and a factor of 2.1x to 2.9x increase in ∆Hc,char versus
- The fraction of total fuel energy content released in the condensed-phase due to char oxidation varied substantially: between 24 % and 58 % for all fuels tested here
- In a preliminary analysis, numerical simulations of upward flame spread were conducted in the Fire Dynamics Simulator, FDS
- In the 2020s, the NIST Gasification Apparatus was refurbished (multiple system components were upgraded or replaced), recalibrated, and brought back online
Summary
Official websites use.gov A.gov website belongs to an official government organization in the United States. Secure.gov websites use HTTPS A lock or https:// means you’ve safely connected to the.gov website. Smoldering and Flaming Heats of Combustion (∆Hc,char and ∆Hc,gas):. Repeated tests were performed using a microscale combustion calorimeter (MCC) to independently measure the heat of combustion of flaming combustion (∆Hc,gas) and the heat of combustion of char oxidation (∆Hc,char) of vegetative fuels: (a) sticks, stems, and/or leaves of grasses and trees, (b) peat (commercial and natural samples, obtained from multiple sources), and (c) solid and engineered wood samples (i.e., western red cedar and oriented strand board, OSB).