. The Effect of two flame retardants on particulate and residue production . Figure 2. — A schematic representation of the combustion facilities. (Note: not drawn to scale.) Particulate Sampling The particulate sampling system consisted of a Neucleonic Corporation of America Model HAS 69 high volume sampler and Gel- men type A glass filter paper. The sampler was connected to a piece of pipe 4 inches (10 cm.) in diameter; this was placed (as shown at top of figure 2) in the center of the effluent stack approximately 50 feet above the fire. The end of the pipe was sealed and four holes 6 Charles
. The Effect of two flame retardants on particulate and residue production . Figure 2. — A schematic representation of the combustion facilities. (Note: not drawn to scale.) Particulate Sampling The particulate sampling system consisted of a Neucleonic Corporation of America Model HAS 69 high volume sampler and Gel- men type A glass filter paper. The sampler was connected to a piece of pipe 4 inches (10 cm.) in diameter; this was placed (as shown at top of figure 2) in the center of the effluent stack approximately 50 feet above the fire. The end of the pipe was sealed and four holes 6 Charles W. George and Aylmer D. Blakely. Energy release rates in fire retardanl evaluation. Fire Technol. 6: 203-210, illus. 1970. were drilled on the underside. The holes de- creased in size from the center of the stack outward so that the effluent cross section could be sampled equally. The flow rate through the sampler was found to be temperature dependent. There- fore, gas temperature was measured and re- corded at the sampler during a run. Calibra- tion curves were used to obtain actual flow rate. The flow rate up the stack was deter- mined using a United Sensor and Control Cor- poration Model PAE-36-M-W pitostatic probe 5
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