The 12th AIVC Conference - Air movement and ventilation control within buildings, was held in Ottawa, Canada, 24-27 September 1991.

Contains 88 papers.  

Volume content

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Vol1: Twenty eight papers from the twelventh AIVC Conference, titles as follows: “The Message of Annex 20: Air Flow Patterns within Buildings”; “Evaluation of Measured & Computer Test Case Results from Annex 20, SubTask 1”; “Models for the Pre
Numerical modeling is performed to predict airflow patterns, thermal comfort, and ventilation air distribution within an open office space.
Jin B. Fang.and Andrew Persily
This paper extends the integral mass balance approach to the remaining constant concentration technique.
Axley J
This paper is concerned with the application of air flow simulation in design.
Hensen J, Hand J, Clarke J
The concentrations of indoor pollutants should be maintained below recommended values at all occupied locations at any time.
Han H, Kuehn T, Ramsey J
Reverberant sound excitation and the sound intensity technique have been used for the measurement of the sound transmission loss of narrow slits in rigid walls.
Oldham D, Zhao X, Sharples S, Kula H-G
The paper discusses methods to set boundary conditions at the air supply opening in predictions of room air flows with computational fluid dynamics.
Heikkinen J
The computer programs published so far have enabled the calculation of airflows at constant temperatures or of air temperatures at constant airflows.
Klobut K, Tuomaala P, Siren K, Seppanen O
Application of hot wirelfilm ariemometry in room air flows presents difficulties because: (1) the effect of natural convection due to the heated wire beconies significant for low air velocity measurements; (2) the angle sensitivity of a hot wire b
Zhang J, Christianson L, Wu G
Modern inlet devices applied in the field of ventilation of rooms are getting more complex in terms of geometry in order to fulfil the demand for thermal comfort of the occupants in the room and in order to decrease the energy consumption This exp
Skovgaard M, Nielsen P
Combined ventilation and heating systems in floors demand extensive investigations about the heat transfer before they could be installed in residential buildings.
Steimle F, Mengede B, Roben J
A set of diagrams for estimating flow coefficients and exponents in the power law flow equation for cracks are presented.
Kronvall J
Results of 3-D computational fluid dynamic simulations of the air flows, temperature distribution and contaminant remove efficiencies for typical workstation configurations which include the option for localized supply of outdoor air will be prese
Grot R
Inter-zone convection affects the general movements of air in a building and must be evaluated for accurate thermal zones heat and mass balance.
Baranowski A, Wasacz M, Eppe J
This paper presents a new approach to determine the interzonal airflows of a multizone system using tracer gas measurements.
Guitizad S, Jarausch H, Raatschen W
Both infiltration and exfiltration has a predominant influence on the space heating requirements in cold climates. Good predictive design methods are required to estimate the air leakage component in buildings.
Parekh A
A mathematical model has been developed which will facilitate the prediction of infiltration rates within multi-zone buildings.
Field A, Batty W, Probert S
Mechanical systems which use common ducts for combined heating and ventilating functions are becoming popular in the Pacific Northwest (U.S.).
Jackson M
Due to the limitations of computer storage and time the flow boundary conditions at an air inlet device have to be specified for numerical simulations of air flow patterns in rooms.
Ewert M, Renz U, Vogel N, Zeller M
The evaluation of a code can be done by investigating two items: solving the correct equations and solving equations correctly and eficiently. An indoor airflow code VentAirI has been developed and is evaluated here.
Li Y, Fuchs L, Holmberg S