Transition Boiling Curves in Saturated Pool Boiling From Horizontal Cylinders

Author:

Ungar E. K.1,Eichhorn R.2

Affiliation:

1. Crew and Thermal Systems Division, NASA, Johnson Space Center, Houston, TX 77058

2. Cullen College of Engineering, University of Houston, Houston, TX 77204

Abstract

Pool boiling heat flux versus wall superheat boiling curves were obtained for horizontal 3.18-mm-dia thin-walled brass tubes heated by an internal high-speed flow of ethylene glycol. The boiling liquids were saturated n-pentane, R-113, acetone, methanol ethanol, benzene, and isopropanol. Boiling results include nucleate and transition boiling in all the test liquids, but film boiling was achieved only with methanol. The measured peak heat fluxes are well correlated by available predictions. The methanol experiments clearly display two transition boiling curves, one obtained on increasing the cylinder temperature from nucleate boiling, the other on decreasing the cylinder temperature from film boiling. For the cases in which the highest cylinder temperature reached only into the transition regime, a single transition boiling curve resulted.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference29 articles.

1. American Society of Mechanical Engineers, 1959, Fluid Meters. Their Theory and Application, New York.

2. Adiutori E. F. , 1964, “New Theory of Thermal Stability in Boiling Systems,” Nucleonics, Vol. 22, No. 5, pp. 92–101.

3. Auracher, H., 1992, “Transition Boiling in Natural Convection Systems,” Proc. The Engineering Foundation Conference on Pool and External Flow Boiling, Santa Barbara, CA, pp. 219–236.

4. Berenson, P. L, 1960, “Transition Boiling Heat Transfer From a Horizontal Surface,” Heat Transfer Laboratory T. R. No. 17, MIT, Cambridge, MA.

5. Broussard R. A. , and WestwaterJ. W., 1985, “Diameter and Velocity Effects for Cross-Flow Boiling,” AIAA Journal, Vol. 23, No. 10, pp. 1615–1620.

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