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Time of Wetness and Dew Formation : A Model of Atmospheric Heat Transfer / SW. Dean, DB. Reiser

Conference Author
Atmospheric Corrosion (1993 : Fort Worth, TX)
Physical Description
1 online resource (8 pages) : illustrations, figures, tables
Additional Creators
Dean, SW., Reiser, DB., American Society for Testing and Materials, and ASTM International
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Summary
Time of wetness is a critical factor in atmospheric corrosion. Dew is a major contributor to time of wetness. In normal atmospheric exposures, dew formation is a result of radiative cooling of exposed surfaces below the dew point of surrounding air. The extent of radiational cooling of an object is affected by the effective sky temperature, the presence of clouds, the view of other surfaces at different temperatures, and air movement by wind or natural convection adjacent to the cooling surfaces. This paper models the temperature of a boldly exposed panel as a function of humidity and air current velocity. The model predicts a maximum panel temperature depression of approximately 16¿̐ưC below ambient air temperature in still air. For wind velocities of 4.5 m/s (10 mph) radiational cooling lowers the panel temperature 3¿̐ưC below ambient air temperature.
Dates of Publication and/or Sequential Designation
Volume 1995, Issue 1239 (January 1995)
Subject(s)
Other Subject(s)
ISBN
080312015X
9780803120150
9780803153028 (e-ISBN)
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 8.
Other Forms
Also available in PDF edition.
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1995. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
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