Chapter 13
... Tall stacks release pollutants into the stronger and more persistent winds that exist at greater heights. Although this enhances dispersion, it also promotes long-distance ...
... Tall stacks release pollutants into the stronger and more persistent winds that exist at greater heights. Although this enhances dispersion, it also promotes long-distance ...
Understanding and Applying ASHRAE Standards - HVAC-Talk
... designer must use some engineering judgment in determining which rooms or areas are connected, nonconnected, or ventilated. Use of transfer ducts between rooms, undercut doors, ventilation grilles in ...
... designer must use some engineering judgment in determining which rooms or areas are connected, nonconnected, or ventilated. Use of transfer ducts between rooms, undercut doors, ventilation grilles in ...
IIS VIOLA MARCHESINI CLIL MODULE “AIR POLLUTION” A.S.
... atmosphere and their residence times vary widely, so it is not always straightforward to estimate how emission reductions from specific sources will impact air quality over time. 1. Ozone, O 3. 2. Carbon monoxide, CO. 3. Sulfur dioxide, SO 2. 4. Nitrogen oxides, NO x. 5. Lead, Pb. 6. Particulates, P ...
... atmosphere and their residence times vary widely, so it is not always straightforward to estimate how emission reductions from specific sources will impact air quality over time. 1. Ozone, O 3. 2. Carbon monoxide, CO. 3. Sulfur dioxide, SO 2. 4. Nitrogen oxides, NO x. 5. Lead, Pb. 6. Particulates, P ...
Why Houses Need Mechanical Ventilation Systems
... activities of the occupants, on the relative strengths of other pollutants and on the level of humidity. Carbon dioxide (CO2) sensors are sometimes used to control ventilation systems in large buildings, and this technology is just now becoming available for residential use. Increasing CO2 concentra ...
... activities of the occupants, on the relative strengths of other pollutants and on the level of humidity. Carbon dioxide (CO2) sensors are sometimes used to control ventilation systems in large buildings, and this technology is just now becoming available for residential use. Increasing CO2 concentra ...
Meteorology Test
... 13) Counterclockwise; clockwise 14) A dry line is a moisture boundary that separates a moist air mass from a dry air mass. ...
... 13) Counterclockwise; clockwise 14) A dry line is a moisture boundary that separates a moist air mass from a dry air mass. ...
Indoor air quality
Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.IAQ can be affected by gases (including carbon monoxide, radon, volatile organic compounds), particulates, microbial contaminants (mold, bacteria), or any mass or energy stressor that can induce adverse health conditions. Source control, filtration and the use of ventilation to dilute contaminants are the primary methods for improving indoor air quality in most buildings. Residential units can further improve indoor air quality by routine cleaning of carpets and area rugs. EPA has guidelines for frequency of cleaning based on traffic, number of household members, pets, children and smokers. Carpets and rugs act like an air filter and must be cleaned.Determination of IAQ involves the collection of air samples, monitoring human exposure to pollutants, collection of samples on building surfaces, and computer modelling of air flow inside buildings.IAQ is part of indoor environmental quality (IEQ), which includes IAQ as well as other physical and psychological aspects of life indoors (e.g., lighting, visual quality, acoustics, and thermal comfort).Indoor air pollution in developing nations is by far the most deadly risk globally. A major source of indoor air pollution in developing countries is the burning of biomass (e.g. wood, charcoal, dung, or crop residue) for heating and cooking. The resulting exposure to high levels of particulate matter resulted in between 1.5 million and 2 million deaths in 2000.