PERFORMANCE EVALUATION OF WIRE COIL INSERTS IN TURBULENT TUBE FLOW – CRITICAL REVIEW

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  • TITLE: PERFORMANCE EVALUATION OF WIRE COIL INSERTS IN TURBULENT TUBE FLOW – CRITICAL REVIEW
  • AUTHOR(S): P. Bonev, V. M. Petkov
  • ABSTRACT: There are different kinds of inserts employed in the heat exchanger tubes such as helical/twisted tapes, coil wires, ribs/fins/baffles, and winglets. This paper presents performance evaluation of some wire coil inserts, using a simple evaluation criterion to assess the possible energy benefit. Wire coil inserts, classical and modified, with different geometrical parameters in the ranges: / 0.06 0.12e D   , / 1.8 33.0p e   , with working fluids as air or water in the range 5 Re (0.4 1.2) 10   have been taken into consideration.
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