Evaluation of the TSI small-scale powder disperser

Technical Report · Tue Nov 01 04:00:00 EST 1994

OSTI ID:54785

Chen, B T; Yeh, Hsu-Chi; Fan, Bijian

Several dry powder generators, including the Wright-dust-feed, the fluidized-bed, the venturi tube, and the jet-o-mizer systems, have been used for inhalation toxicity studies involving relatively high concentrations of aerosols. For fundamental laboratory studies, however, a powder generator that can produce a limited quantity of test aerosol is more practical than a system that generates high concentrations. The TSI small-scale powder disperser (SSPD) is a low flow rate, low mass output generator that uses venturi aspiration through a capillary tube to remove particles from the surface of a turntable, like a vacuum cleaner. The particles are then deagglomerated in a venturi throat and an expansion cone. The purpose of this study was to evaluate the SSPD by investigating the effects of flow rate, particle size, and particle shape on the generation efficiency and internal losses.

• Research Organization: Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM (United States). Inhalation Toxicology Research Inst.
• OSTI ID: 54785
• Report Number(s): ITRI--144; ON: DE95007526
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AEROSOL GENERATORS
AEROSOLS
EFIMOV EFFECT
EVALUATION
FLOW RATE
INHALATION
PROGRESS REPORT
TOXIC MATERIALS