A predictive model for aerosol transmission through a shrouded probe

Article Abstract:

A correlation model that predicts the transmission ratios, aspiration ratios and wall loss ratios of shrouded aerosol sampling probes was developed. Results revealed that the model underestimates aspiration by an average of 2%, while the model for wall loss ratio underpredicts experimental values by an average of 8%. The latter influences the transmission ratio by only about 2%, however. Prediction of transmission ratio, meanwhile, is within 1% of average experimental values.

Metal cans, Aerosols & Related Products, Metal Can Manufacturing, Analysis, Environmental aspects, Aerosols, Air pollution, Contamination (Technology), Contamination

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Design methodology for multiple inlet cyclones

Article Abstract:

The performance of two types of multi-inlet aerosol sampling cyclones was modeled using correlations. Four cyclones of each type were constructed and each was tested at several flow rates. Each cyclone was measured according to fractional efficiency. The data that show a relationship between fractional efficiency and dimensionless particle size was fitted with sigmoid curves. The study aims to provide a basis for the design and testing of multi-inlet sampling cyclones.

All Other Miscellaneous General Purpose Machinery Manufacturing, Centrifugal Chemical Separators, General industrial machinery, not elsewhere classified, Equipment and supplies, Separators (Machines), Separation equipment, Centrifuges, Chemical engineering

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Design and evaluation of a long-term soil gas flux sampler

Article Abstract:

A long-term soil gas flux sampler was designed using a computer model and tested in both laboratory and field experiments. The device measures the flux of organic contaminants at ground level using a passive sampling element. The sampler is low-cost and user friendly compared to other samplers.

Pollutants, Measuring instruments, Soil aeration

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