The Experimental Determination of the Thermodynamic and Hydrodynamic Mechanism of Augmented Flow Boiling in Tubes.
Abstract
Experimental results are presented for a new and unique heat transfer augmentation technique in tubes. The technique consists of inserting a porous mesh structure into the flow passage of the tube. Due to the increased degree of turbulence, both the single phase heat transfer coefficient and the two-phase subcooled boiling heat transfer rate are considerably increased over the values achievable in empty tubes at similar flow conditions. In particular, the burnout heat flux achievable with mesh-filled tubes is twice the value that can be achieved with empty tubes at the same mass flow rates. The experimental data concerns single phase heat transfer, flow boiling burnout, and pressure drop. The technique should be of interest in the cooling of reactors, high power electronic tubes and rocket nozzles, or in other situations where extremely high heat fluxes must be dissipated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1970
- Accession Number
- AD0873260
Entities
People
- F. E. Megerlin
Organizations
- Raytheon Missiles & Defense