Cubic feet per minute


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Cubic feet per minute

A measure of the volume of a substance flowing through air within a fixed period of time. With regard to indoor air, refers to the amount of air, in cubic feet, that is exchanged with outdoor air in a minute’s time; i.e., the air exchange rate.
References in periodicals archive ?
5 cubic feet per minute of breathable air to up to four people in areas that cannot be pressurized, such as open vehicles, or where gas masks are the preferred means of protection.
The gauge alternates between measuring the house pressure and the pressure at the fan, which the gauge then converts to airflow in cubic feet per minute.
The integral skins, combined with the fibrous core have an air permeability between approximately 12 and 49 cubic feet per minute per square foot of the major surface area.
CADR test results are expressed in cubic feet per minute (CFM), with a number rating for three "yardstick" particles: tobacco smoke, dust and pollen.
As a standard measure for tight, well-insulated buildings, engineers design systems to circulate 20 cubic feet per minute (CFM) of fresh air per person.
Capacities can reach up to 30 cubic feet per minute, with a maximum conveyor speed of 185 feet per minute, for straight run configura tions.
They have up to 150 cubic feet of fresh air per minute, compared to those in economy class who may get as little as seven cubic feet per minute.
Anthony's Chapel has a serious moisture problem-one that apparently began around the turn of the century, when mechanical ventilation systems to draw out the dangerous methane began pulling warm outside air through the mine's cool shafts at a rate of some 35,000 cubic feet per minute.
According to the industry report, current fresh air supplies vary from less than 7 cubic feet per minute per passenger for those sardine-canned into economy class to 50 cubic feet per minute for those in first class.
Prior to the oil embargo of 1973, ventilation rates were designed to supply fresh air at a rate of 15 cubic feet per minute (cfm) per person, but subsequent conservation measures lowered this to 5 cfm per person.
293 Watt-hours) cooling, airflow of 1,700 Cubic Feet per Minute ("CFM").
wingspan, the fan blows up to 1100 cubic feet per minute, propelling more air than most stock fans.