- 期刊
- OpenAccess
Development and Performance Evaluation of a Porous Tube Dilutor for Real-time Measurements of Fine Particles in High-humidity Environments
摘要
Real-time measurement of fine particles in stack emission gases is an important component in continuous environmental monitoring of PM_(10) and PM_(2.5). We developed a porous tube dilutor (using both hot and cold dilution) to measure fine, but not condensable, particles in highly humid gas emissions and compared our device to a commercial ejector-type dilutor. Particle size distributions were measured in emissions from a diesel engine and a coal-fired boiler. The porous tube dilutor successfully measured particles in accumulation mode, including relatively large particles over 3 μm in diameter (without nuclei), whereas the ejector dilutor detected some condensable particles but could not detect large particles. The porous tube dilutor successfully removed condensed water droplets generated by a humidifier in a 30-m^3 chamber.
延伸閱讀
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