ShareA COMPARISON OF AUGMENTATION TECHNIQUES DURING IN-TUBE EVAPORATION OF R113.
Author(s) : REID R. S., PATE M. B., BERGLES A. E.
Type of article: Article
Summary
A STUDY WAS CONDUCTED TO DETERMINE THE POTENTIAL OF 3 TECHNIQUES FOR AUGMENTING IN-TUBE EVAPORATION HIGH-FIN TUBES, MICROFIN TUBES, TWISTED TAPE INSERTS. FIVE TUBES WITH INTERNAL FINS AND ONE SMOOTH TUBE WITH A TWISTED-TAPE INSERT WERE TESTED. MASS FLUXES, PRESSURE LEVELS, AND QUALITIES WERE FIXED WHEN ENHANCEMENT FACTORS WERE CALCULATED. FOR THE INTERNALLY FINNED TUBES THE ENHANCEMENT FACTORS VARIED FROM 1.1 TO 2.8. AN INTERNALLY FINNED TUBE HAVING HELICAL SPIRAL ANGLES OF 16 DEG PRODUCED THE LARGEST ENHANCEMENT OF HEAT TRANSFER. THE TUBE WITH THE TWISTED-TAPE INSERT TYPICALLY HAD AN ENHANCEMENT FACTOR OF ABOUT 1.5.
Details
- Original title: A COMPARISON OF AUGMENTATION TECHNIQUES DURING IN-TUBE EVAPORATION OF R113.
- Record ID : 1992-1068
- Languages: English
- Source: J. Heat Transf. - vol. 113 - n. 2
- Publication date: 1991/05
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
- Themes: Mass transfer
- Keywords: Internal fin; Heat transfer coefficient; Halogen; Finned tube; Fin; Extended surface; Comparison; Measurement; Turbulator; Heat transfer; R113; Performance; Evaporation; Refrigerant
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