TURBULENT FLOW AND HEAT TRANSFER INSIDE DOUBLY-FLUTED TUBES.
Author(s) : RICHARDS D. E., GRANT M. M., CHRISTENSEN R. N.
Summary
THE PAPER PRESENTS THE RESULTS OF A STUDY OF PRESSURE DROP AND HEAT TRANSFER FOR TURBULENT FLOW INSIDE 12 DIFFERENT DOUBLY-FLUTED TUBES. THE EXPERIMENTS COVERED A RANGE OF REYNOLDS NUMBERS FROM 10,000 TO 100,000. THE DATA WERE OBTAINED USING WATER FLOWING INSIDE A HORIZONTAL TUBE WITH STEAM CONDENSING ON THE EXTERNAL SURFACE OF THE TUBE. INTERNAL CONVECTIVE HEAT TRANSFER AND EXTERNAL CONDENSATION COEFFICIENTS WERE OBTAINED. FRICTION FACTOR AND NUSSELT NUMBER CORRELATIONS ARE PRESENTED FOR EACH TUBE. THE PERFORMANCE IS EXAMINED BY DETERMINING THE VOLUME REDUCTION THAT CAN BE ACHIEVED USING DOUBLY-FLUTED TUBES. VOLUME REDUCTIONS OF 20% CAN BE ACHIEVED FOR DESIGNS WHERE THE TUBESIDE RESISTANCE IS LIMITING.
Details
- Original title: TURBULENT FLOW AND HEAT TRANSFER INSIDE DOUBLY-FLUTED TUBES.
- Record ID : 1988-2231
- Languages: English
- Publication date: 1987
- Source: Source: ASHRAE Trans.
vol. 93; n. 2; 2011-2026; 6 fig.; 4 tabl.; 13 ref. - Document available for consultation in the library of the IIR headquarters only.
Indexing
- Themes: Heat transfer
- Keywords: Horizontal tube; Heat transfer coefficient; Groove; Ribbed tube; Turbulent flow; Heat exchanger; Water; Pressure drop
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