Flooding criterion for evaporative cooling on horizontal semi infinite solids
- Univ. of Maryland, College Park, MD (United States). Mechanical Engineering Dept.
- Univ. di Bologna (Italy). Ist. di Fisica Tecnica
The evaporative cooling of a sparse spray impacting on a hot solid is investigated to determine the limiting condition associated with the liquid flooding of the solid surface. The flooding condition is identified when the evaporation rate is insufficient to remove the amount of water being deposited on the surface. The flooding criteria is derived as a function of the initial single droplet volume prior to deposition, the Evaporation-Recovery Cycle (ERC) and the area of influence, which describes the region of the solid surface associated with a single droplet cooling effect. These last two quantities, the ERC and the area of influence, are evaluated by integrating previously obtained theoretical and experimental information with selected experimental data obtained in this study. The flooding criteria, while semi-empirical in its derivation, can be generalized to all non-porous solids under a variety of conditions. The spray is sparse and the water droplets are considered of uniform size. Extension to a spray with non-uniform droplet distribution is not considered here.
- Sponsoring Organization:
- National Inst. of Standards and Technology, Gaithersburg, MD (United States)
- OSTI ID:
- 428078
- Report Number(s):
- CONF-960815-; ISBN 0-7918-1508-0; TRN: IM9708%%407
- Resource Relation:
- Conference: 31. national heat transfer conference, Houston, TX (United States), 3-6 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of ASME proceedings of the 31. national heat transfer conference: Volume 4. HTD-Volume 326; Witte, L. [ed.] [Univ. of Houston, TX (United States)]; Singer, R.M. [ed.] [Argonne National Lab., IL (United States)]; Peterson, P.F. [ed.] [Univ. of California, Berkeley, CA (United States)] [and others]; PB: 241 p.
- Country of Publication:
- United States
- Language:
- English
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