Affiliation:
1. Department of Mechanical and Aerospace Engineering, The University of Texas at Arlington, Arlington, TX 76019
Abstract
In the present investigation, boiling heat transfer coefficients are measured for an electrically heated 390-μm-dia, platinum wire immersed in saturated water, and in water mixed with three different concentrations of sodium dodecyl sulfate (an anionic surfactant). The addition of a surfactant to water is known to enhance boiling heat transfer. A recently developed photographic/laser-Doppler anemometry measurement technique is used to quantify the vapor volumetric flow rate departing from the wire during the boiling process. The volumetric flow rate data are used to calculate the latent heat and, indirectly, the convection heat transfer mechanisms that constitute the nucleate boiling heat flux. Comparisons are made to determine how the heat transfer mechanisms are affected by the surfactant addition, and thus, which mechanism promotes boiling enhancement. The present data are also compared with similar data taken for a 75-μm-dia wire immersed in saturated FC-72 (a highly wetting liquid) to provide increased insight into the nature of the boiling heat transfer mechanisms.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference10 articles.
1. Ammerman
C. N.
, YouS. M., and HongY. S., 1996, “Identification of Pool Boiling Heat Transfer Mechanisms From a Wire Immersed in FC-72 Using a Single-Photo/LDA Method,” ASME JOURNAL OF HEAT TRANSFER, Vol. 118, pp. 117–123.
2. Carey, V. P., 1992, Liquid–Vapor Phase-Change Phenomena, Hemisphere Publishing Corporation, p. 34.
3. Frost
W.
, and KippenhanC. J., 1967, “Bubble Growth and Heat-Transfer Mechanisms in the Forced Convection Boiling of Water Containing a Surface Active Agent,” Int. J. Heat Mass Transfer, Vol. 10, pp. 931–949.
4. Ivey
H. J.
, 1967, “Relationships Between Bubble Frequency, Departure Diameter and Rise Velocity in Nucleate Boiling,” Int. J. Heat Mass Transfer, Vol. 10, pp. 1023–1040.
5. Kline
S. J.
, and McClintockF. A., 1953, “Describing Uncertainties in Single-Sample Experiments,” Mechanical Engineering, Vol. 75, Jan., pp. 3–8.
Cited by
48 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献