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Document ID (ISN)62604
CIS number 94-1375
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1993
Convention or series no.
Author(s) Guffey S.E.
Title Modeling existing ventilation systems using measured values
Bibliographic information June 1993, Vol.54, No.6, p.293-306. Illus. 14 ref.
Abstract Equations are derived to model installed exhaust ventilation systems using measured diameters, flows, and pressures. The system of equations does not require knowledge of system components or their loss coefficients except for those components that will be replaced. The approach also allows detection of physical changes in existing systems. Measurement errors limit the accuracy of predictions. The nonquadratic relationship between flow and friction loss limits the accuracy of predictions when there are extreme changes in duct velocities. The modelling procedure is demonstrated for an example problem in which "observed" values are created for "initial" and "final" conditions from velocity pressure loss coefficients.
Descriptors (primary) ventilation; mathematical simulation; ventilation systems; ventilation design
Descriptors (secondary) design data; design of equipment
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Heating, ventilation and climate
Broad subject area(s) Physical hazards
Browse category(ies) Ventilation