Personalized ventilation (PV) aims to supply clean air directly to the
breathing zone of each occupant (Melikov et al.
Find the average outdoor air fraction ([X.sub.s] (or OAF) = [V.sub.ou] /[V.sub.ps]) for the air handler supplying air to the terminal box, i.e., the fraction of outdoor air needed in the primary airstream when all
breathing zones need exactly the same outdoor air fraction.
Determination of particle concentration in the
breathing zone for four different types of office ventilation systems.
However, due to highly non-uniform thermal environment in cooking zone and
breathing zone in kitchen, some argue the general evaluation criteria for thermal comfort often used in office environments cannot be applied in commercial kitchens and establishing a method for assessing the acceptable working environments in kitchens is necessary (Simone at al.
The mean pollutant concentrations at the exhaust were calculated and compared to the pollutant concentrations in the
breathing zone to test the performance of the IAQ sensor placed at the room exhaust.
Second, personal
breathing zone measurements of responders' exposures to vinyl chloride were not collected, so it is impossible to correlate vinyl chloride exposure levels with symptoms.
Prof Howarth said: "With such a significant reduction in exposure to allergens, we believe that targeting this equipment specifically to the
breathing zone of a patient may succeed in an area where so many other measures, including air filters, have failed.
PAPRs operate by filtering air through a battery powered unit, which is then supplied into the
breathing zone inside the helmet.
This suppresses the elevation of dust, taking the dust away from the operator's
breathing zone and into the booth's low level perforated extraction grilles.
The company's ISO-Gard Mask is designed to reduce waste anesthetic gas (WAG) within a nurse's
breathing zone to minimise the cumulative effect of low-level exposure to these hazardous gases in the Post Anesthesia Care Unit (PACU).
A sampling of coverage in the 23 contributions:
breathing zone exposure assessment, mechanisms of particle deposition, aerosol chemistry and physics, health effects of ambient ultrafine particles, nanoparticle cell penetration, radioactive aerosols, filtration and sampling of fibrous filters, radioactive aerosols of the Chernobyl accidence, and lung cancer risk associated with radon and thoron, among other topics.
ft., grate-style work surface to quickly draw contaminants down and away from the worker's
breathing zone. Contaminants are then collected and _ filtered from the air flow path using high-efficiency filtration (MERV 17 after-filter).