Academic journal article Journal of Environmental Health

Minimizing Pathogenic Bacteria, Including Spores, in Indoor Air

Academic journal article Journal of Environmental Health

Minimizing Pathogenic Bacteria, Including Spores, in Indoor Air

Article excerpt

* The earth has a natural background electrical field, which usually varies from about 150 to 200 volts per meter.

* In indoor spaces, the natural background field is distorted by the electrical characteristics of materials in equipment, furniture, walls, clothing, and carpets.

* The electrical fields generated by computers and other electronic equipment, and the electrical fields generated by power lines in walls, also distort the background field.

* These factors create a complex three-dimensional web of voltage gradients often referred to as electrical field lines.

* Electrical fields, rather than air currents, are the primary determinant of small-particulate motion in rooms.

* Small particulates tend to move along the electrical field lines and be deposited on people and objects.

* Relatively few small particulates are returned to air ducts; thus relatively few reach air filters.

* As small particulates age, however, many collide, forming larger particulates.

* This process is called coagulation.

* Coagulated particulates have a large enough cross sectional area to be entrained by air currents. …

Search by... Author
Show... All Results Primary Sources Peer-reviewed

Oops!

An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.