Droplet evaporation on porous and non-porous ceramic solids heated from top |
| |
Authors: | M Abu-Zaid |
| |
Institution: | (1) Department of Mechanical Engineering Faculty of Engineering Mu'tah University Al-Karak, Jordan, JO |
| |
Abstract: | This paper presents the results of an experimental investigation, of the effect of radiation heat, on the evaporation of
five droplet sizes of pure water, softly deposited on porous and non-porous ceramic solids, at temperature ranging from 75
to 250 °C. Both solids were instrumented with several surface and in-depth thermocouples, and had the same thermal properties.
Results show that, the droplet evaporation time, and the surface recovery time for the porous solid were shorter than that
of non-porous solid for the same droplet size under identical conditions. Also, smaller droplets were more efficient for cooling
both solids. The results were compared with data for the evaporation of water droplets on similar ceramic solids heated from
bottom (Abu-Zaid M; Atreya A (1994) J Heat Transfer 116: 694–701). The comparison shows that, the heat radiation has a significant
effect of reducing evaporation time, recovery time, and droplet volume of influence for both solids, at the same initial surface
temperature.
Received on 6 December 1999 / Published online: 29 November 2001 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|