INVESTIGATION OF LIQUID METAL BOILING HEAT TRANSFER.
Abstract
Nucleate boiling for sodium, rubidium, cesium, and water was studied. The critical heat fluxes were lower than hydrodynamic theory had predicted. Film boiling of potassium from a horizontal plate was studied. The flux level and the temperature difference between the surface and the fluid at the incipience of stable film boiling differed from earlier predictions. Agravic studies with pool boiling mercury were studied at accelerations up to 20 g's. Increases in pressure and acceleration usually improved the heat transfer. Sodium condensing studies resulted in coefficients of approximately 18,000 Btu/hr sq ft. for fluxes up to 500,000 Btu/hr sq ft. These are much lower than predictions from Nusselt's theory. Two phase flow potassium pressure drop, void fraction and heat transfer studies were conducted. Pressure drop studies yielded lower results than predicted by Lockart - Martinelli procedures. The void fraction studies agreed with Baroczy's predictions. The heat transfer studies were conducted at qualities up to 17%. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0808309
Entities
People
- Bruce F. Caswell
- Herman Merte Jr.
- Richard E. Balzhiser
- Robert E. Barry
- Robert L. Gahman
Organizations
- University of Michigan