The traditional cyclone with spray scrubber was developed for the removal of airborne silica particles from local exhaust ventilation (LEV). The objective of this research is to evaluate the efficiency of this process for removing silica particles in LEV. After designing and installing a traditional cyclone and spray scrubber, air samples were obtained at the inlet and outlet of the apparatus. ...

Tests of the Saarberg-Halter Umwelttechnik GmbH (S-H-U) flue gas desulfurization (FGD) process were performed November 12-20, 1998. while burning the design coal at the NYSEG Milliken Station Unit No. 1. The objectives of the test program using the design coal were to demonstrate the effect of cocurrent and countercurrent liquid-to-gas ratio on SO, removal and scrubber operability. Measurements...

A proximal positive end-expiratory pressure (PEEP) and continuous positive airway pressure (CPAP) system was constructed by the simple addition of a venturi T-piece proximal to the exhalation limb of a breathing circuit. The level of PEEP or CPAP was determined by the amount of flow powering the venturi. This system can provide positive pressure in excess of 40 cm H2O without the need for check...

BACKGROUND A table of the approximate ranges of inspired oxygen delivered at given oxygen flow rates is often given on the packaging of oxygen masks. A study was carried out to check the inspired oxygen concentration given by one of the new masks, which has been designed to be used with or without the Venturi attachment as a result of the proposal to use it without the Venturi attachment as a g...

Annular gas-liquid two phase flow is widely encountered in the nuclear industry. Various combinations of techniques have been employed in annular gas-liquid two phase flows to measure the flow parameters (e.g. liquid film thickness, gas volume fraction and the phase flow rates). One of the most useful techniques which has proven attractive for many multiphase flow applications is the electrical...

Attempts to improve drug delivery from conventional jet nebulizers have included the use of storage systems to reduce drug wastage during exhalation. Venturi nebulizers enhance drug delivery during inhalation, reducing treatment times and drug wastage. This study investigated the effect of age on inhaled dose from a conventional jet nebulizer (Acorn) used both with and without a storage chamber...

The development and illustrative applications of an ambient ionization technique termed Venturi easy ambient sonic-spray ionization (V-EASI) is described. Its dual mode of operation with Venturi self-pumping makes V-EASI applicable to the direct mass spectrometric analysis of both liquid (V(L)-EASI) and solid (V(S)-EASI) samples. V-EASI is simple and easy to assemble, operating solely via the a...

Annular gas-liquid two phase flow is widely encountered in the nuclear industry. Various combinations of techniques have been employed in annular gas-liquid two phase flows to measure the flow parameters (e.g. liquid film thickness, gas volume fraction and the phase flow rates). One of the most useful techniques which has proven attractive for many multiphase flow applications is the electrical...

The Cape ventilator (Penlon Ltd) still remains one of the most widely used ventilators in intensive therapy units (ITU). However, when low fractional inspired oxygen concentrations (F IO2 ) are prescribed, particularly when associated with low minute volumes (V̇ ), the required supplemental oxygen flow is small. Flows less than 2 litres/min are not uncommon. For example; an F IO2 of 0·35 and a V̇...

NOx removal from an actual boiler flue gas was investigated using a commercial ozonizor for indirect NO oxidation and a scrubber using Na2SO3 . The flue gas was in the range of 470~1,480 Nm/h, the gas temperature of 327C, and NOx concentration of 40 ppm. Approximately 80% of NOx removal efficiency was achieved during 180 min of system operation by maintaining pH of 8 and oxidation reduction pot...