Title: effective chimney height
Long Title: IUPAC Gold Book - effective chimney height
DOI: 10.1351/goldbook.E01893
Status: current

Definition
A height used for the purposes of calculating the dispersion of emitted gases from a chimney, and which differs from the real chimney height by an amount which depends on such factors as the exit velocity, buoyancy effects and wind speed; it may also be affected by the local topography. It denotes the maximum height of the centre of a plume path above the level of the ground. The effective height may be above or below the actual chimney height, although the former case is most common.

Source
- PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2179 (https://doi.org/10.1351/pac199062112167)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/E01893/html
- json: https://goldbook.iupac.org/terms/view/E01893/json
- xml: https://goldbook.iupac.org/terms/view/E01893/xml

Citation: Citation: 'effective chimney height' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.E01893
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Accessed: 2026-05-09T03:43:22+00:00