Construct · 1 fields · 1 citations

chimney: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
chimney1 CONSTRUCTChimney (stack) effectHENS · STACK EFFECT

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Building physics

Buoyancy-driven airflow up a shaft

In building physics the chimney or stack effect is the buoyancy-driven movement of air up a vertical shaft or through a building, arising because warm indoor air is less dense than colder outside air and so rises, drawing replacement air in low and expelling it high. Hens's Building Physics derives the resulting pressure difference from the temperature-dependent density of air and the height of the shaft. The referent is a flow-and-pressure phenomenon driven by density differences, quantified by stack pressure and airflow rate, distinct from a rock cleft or a volcanic pipe though all three invoke the image of a chimney.[1]

Unit
The pressure difference and airflow driven up a shaft by density contrast
Recovery means
Not applicable
Measured by
Quantified by the stack pressure difference, which scales with shaft height and indoor–outdoor temperature difference, and the resulting air-change rate

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Nearby constructs

stack2 fields · 4 citationsjingle · one word, two constructsbackdraft2 fields · 2 citationsjingle · one word, two constructs

References

  1. Hens, H. S. L. (2017). Building physics: Heat, air and moisture: Fundamentals and engineering methods with examples and exercises. Ernst & Sohn. ISBN 9783433031971

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