AIVC - Air Infiltration and Ventilation Centre

Search form


You are here

Home  |  windows

Static pressure and ventilation rates in rooms

Flora W. Black, 1950
air pressure | rooms | Static pressure | ventilation systems | air flow | Flowmeters | buildings | Blowers | windows | natural ventilation
Bibliographic info: The Journal of Hygiene Vol. 48, No. 1
Languages: English Pages (count): 8

The British Standard Code of Practice, and other authoritative guides, recommend minimum rates of ventilation related to the size and use of rooms, and structural means for providing them. But the difficulty of measuring actual ventilation rates suggests that it is seldom done.

A standard way is to put into a room a known amount of some gas, measure the rate of decay of its concentration and hence infer the ventilation rate. (Renbourn, Angus & Ellison, 1949; Bedford, 1948; Lidwell & Lovelock, 1946). To estimate the ventilation rate by measuring the difference in static pressure between points inside and outside a room has been deemed impracticable (Carne, 1946). While investigating this conclusion, and, in the sequel, confirming it, observations on the relationship between air flow and static pressures, which may be of general interest, were made at the Ministry of Works Field Test Unit.

(Login or register to download)

Related publications

23 May 2019 | New Perspectives on Kitchen Ventilation
INIVE eeig,
25 April 2019 | Ductwork airtightness measurements: protocols
INIVE eeig,
This project deals with reviewing EBC's Annex 5: "Air Infiltration and Ventilation Cent