Air-exchange rate

The rate at which outside air replaces indoor air in a given space.

Mentioned in ?

Cubic feet per minute

References in periodicals archive ?

(2017b) found that temperature had a greater effect on the release of VOCs from three-layer plywood than did relative humidity or the air-exchange rate. However, few reports have focused on the odors from wooden panels.

Characterization of Odorants in Particleboard Coated with Nitrocellulose Lacquer under Different Environment Conditions

Build-up of oily residue inside IBC exhaust ducts will gradually reduce the air-exchange rate and cooling capacity of the IBC system.

Seven simple steps to more efficient blown film extrusion

Note, however, that the latter assumes an increase in air-exchange rate alone, without increasing the mass-transfer coefficients, which would tend to increase as ventilation increases.

Predicting residential exposure to phthalate plasticizer emitted from vinyl flooring: sensitivity, uncertainty, and implications for biomonitoring

Some nonresidential buildings (such as the buildings contaminated in the 2001 attack) have extremely high ceilings, and achieving a high air-exchange rate in these spaces may be not be feasible with portable air cleaners.

HEPA/vaccine plan for indoor anthrax remediation

The higher the air-exchange rate, the greater the indoor ozone level, according to Weschler's data.

Ozone: indoors may offer little protection

Risk factors for infection among the lab workers included missed TB diagnoses in patients in the first 24 hours of admission, (45% of cases; odds ratio 2.0), delayed treatment for TB by 1 week or more (30% of cases; odds ratio 2.0), high proportion of hospital TB deaths (12% of patients died; odds ratio 2.5), and working in pathology, which has low air-exchange rates (51% of evaluated areas; odds ratio 5.4).

Tuberculosis hits lab workers. (Clinical Capsules)

Obviously, it would take a keen eye (or nose) to link these circumstances to a real IAQ problem, which is why it's important to upgrade your building automation system to include proper filtering, air-exchange rates and monitors.

Breathing with confidence. (Editorial Comments)

"By sealing windows and doors to keep inside air in and outside air out, we've reduced the air-exchange rates by a factor of two or more in many new houses," says Richard Corsi, associate professor of civil engineering at the University of Texas and one of the country's leading experts on indoor air quality.

Experts Are Turning Up Some Surprising Sources of Indoor Air Pollution

Their double-blind, crossover study altered air-exchange rates at four buildings with sealed windows and mechanical ventilation systems every Friday afternoon for three two-week recording periods.

Sick buildings: the ventilation conundrum

It has been demonstrated that emission factors change with changes in air-exchange rates, increasing at high air-exchange rates and decreasing at low air-exchange rates (Matthews et al.

Predicting indoor-air formaldehyde concentrations from emissions of urea-formaldehyde-bonded wood products using the Versar model