To date, the measurement of different data generated smoke is mainly carried out in the static case in which the most famous is the density of the smoke box. This test method has several drawbacks: difficult to accurately smoke speed tracking, the vertical direction of the sample and do not include testing a thermoplastic plastic, there is no mass loss measurement, irradiance level of limited range. Some of these disadvantages have been overcome in the future modification, but still, the main problem of the accumulation of test methods still exist. <br>Yin this, it presents a dynamic, fluid systems, and expects its full and real fires have better predictive power. This small test instrument can now be used in the cone calorimeter. It was originally measured heat release rate and development, but also the smoke emission is determined, the ignition timing and the like. However, some researchers have pointed out the importance of measuring aging mature or smoke, and in the circulation system may not be the case. In a small area, between the static and dynamic conditions of relatively limited, show less fumes under dynamic conditions. <br>Smoke cone calorimeter measurement is carried out by laser beam, with most of the early measurement differ. The laser has a simple design, a high degree of quasi-collimated beam, the advantages of simplified theoretical relevance. However, the laser system may have some problems in terms of signal stability and visibility, which escape to a real fire situation is very important. Application of the cone calorimeter, the second control signal to improve the stability of the photometer.
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