A blower motor pressurizes the cab with cleaned air and recirculates a part of this airflow rate through the air conditioning (heating) system.
#The last taxi ride kcls.org driver#
These cab cleaning systems reduce driver exposure to aerosols (dust, fibres, diesel particles, bioaerosols, etc.) and vapours. These cabs are found in a number of sectors: civil engineering construction (demolition, decontamination of polluted soils, tunnel excavation, and road surfacing), handling (powder products and waste sorting), mining industry, and in the agricultural sector (pesticide spraying). In a pressurized vehicle cab, where the air supplied is appropriately purified, driver exposure to pollutants can be reduced by at least a factor 10 ( Hall et al., 2002) and isolate the driver from the polluted environment, in which he is likely to work. This method could represent an attractive alternative to methods involving gas tracing or air velocity measurement at blowing inlets.Īerosol, cab, optical counter, tracing INTRODUCTION Determination of clean airflow rate by monitoring the decrease in test aerosol concentration in the test chamber gave excellent results. We also noted the importance of filter mounting airtightness, in which the smallest defect is reflected by significant degradation in cab performance. Measurements showed that high confinement efficiencies can be achieved with cabs, which are properly designed in ventilation/cleaning/airtightness terms. Results of cab confinement efficiency measurements agreed closely for these two methods implemented in the study. Two laboratory methods have been applied to determining the performance characteristics of two cabs of different design, namely, optical counting-based measurement of a potassium chloride (KCl) aerosol and fluorescein aerosol-based tracing. These cabs provide protection against particulate and gaseous pollutants generated by these types of work activities.
#The last taxi ride kcls.org drivers#
Vehicle cabs equipped with an effective air cleaning and pressurization system, fitted to agricultural and off-road machineries, isolate drivers from the polluted environment, in which they are likely to work.
0 kommentar(er)
