.AixLib.Airflow.WindowVentilation.EmpiricalExpressions

Empirical expressions for calculation of the airflow

Information

This package contains different empirical expressions to estimate the air flow rate by single-sided window ventilation.

The table below presents the applicable use cases for each expression.

Model

Simple opening

Side-hung opening

Top- and Bottom-hung opening

Pivot opening

Sliding opening

Gids and Phaff (1982)

Y

?

?

?

?

Warren and Parkins (1984)

Y

?

?

?

?

Maas (1995)

N

Y

Y

N

N

Hall (2004)

N

N

Only bottom-hung, inward

N

N

Larsen and Heiselberg (2008)

Y

?

?

?

?

ASHRAE (2009)

Y

?

?

?

?

Caciolo et al. (2013)

Y

?

?

?

?

VDI 2078 (2015)

Y

N

Only bottom-hung, inward

N

N

Tang et al. (2016)

Y

?

?

?

?

DIN EN 16798-7 (2017)

Y

N

Y

N

Y

Jiang et al. (2022)

N

N

Only bottom-hung, inward

N

N

DIN/TS 4108-8 (2022)

Y

Y

Y

Y

Y

Contents

Name Description
 ASHRAE Empirical expression according to ASHRAE handbook (2009)
 Caciolo Empirical expression developed by Caciolo et al. (2013)
 DIN16798 Empirical expression according to DIN EN 16798-7 (2017)
 DIN4108 Empirical expression according to DIN/TS 4108-8 (2022)
 GidsPhaff Empirical expression developed by de Gids and Phaff (1982)
 Hall Empirical expression developed by Hall (2004)
 Jiang Empirical expression developed by Jiang et al. (2022)
 LarsenHeiselberg Empirical expression developed by Larsen and Heiselberg (2008)
 Maas Empirical expression developed by Maas (1995)
 Tang Empirical expression developed by Tang et al. (2016)
 VDI2078 Empirical expression according to VDI 2078 (2015)
 WarrenParkins Empirical expression developed by Warren and Parkins (1984)

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