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TURBULENT FLOW HEAT TRANSFER AND FLUID FRICTION IN HELICAL-WIRE-COIL-INSERTED TUBES.

Author(s) : SETHUMADHAVAN R., RAJA RAO M.

Type of article: Article

Summary

RESULTS ARE PRESENTED FROM EXPERIMENTAL INVESTIGATIONS OF HEAT TRANSFER IN A 25 MM ID COPPER TUBE, TIGHTLY FITTED WITH HELICAL-WIRE-COIL INSERTS OF VARYING PITCH, HELIX ANGLE AND WIRE DIAMETER. A SIMILARITY LAW APPROACH WAS ATTEMPTED TO INTERPRET THE FRICTION AND HEAT TRANSFER RESULTS AND CORRELATE THEM IN TERMS OF ROUGHNESS REYNOLDS NUMBER, MOMENTUM TRANSFER ROUGHNESS FUNCTION AND HEAT TRANSFER ROUGHNESS FUNCTION. THE RESULTS ARE COMPARED WITH PREVIOUSLY PUBLISHED RESULTS AND A GENERALIZED CORRELATION HAS BEEN DEVELOPED, WHICH IS APPLICABLE FOR DIFFERENT TYPES OF ROUGH SURFACES. AN OPTIMIZATION STUDY WAS MADE FOR THE MAXIMIZATION OF THE HEAT TRANSFER RATE AND THE MINIMIZATION OF PUMPING POWER TO IDENTIFY THE MOST EFFICIENT TUBE.

Details

  • Original title: TURBULENT FLOW HEAT TRANSFER AND FLUID FRICTION IN HELICAL-WIRE-COIL-INSERTED TUBES.
  • Record ID : 1985-0073
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 26 - n. 12
  • Publication date: 1983/12

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