The evaporation of moisture from wet surfaces

✍ Scribed by J.C. Ashworth; R.B. Keey

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 773 KB
• Volume: 27
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(72)85041-3

✦ Synopsis

The authors investigate "exact" relationships for the flux of vapour leaving a wet surface in terms of the humidity potential and wet-bulb depression. As the wet-bulb temperature rises the departure from a linear relationship becomes more marked, but the flux is still directly proportional to the humidity potential for processes at a constant wet-bulb temperature. The difference between the wet-bulb and adiabatic-saturation temperatures is shown to decrease with increasing wet-bulb temperature and vanish altogether at the boiling point. A new humidity chart, based on the "exact" relationships developed, is presented which yields a greater reading accuracy than charts of similar size hitherto produced.