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PERFORMANCE EVALUATION CRITERIA FOR USE OF ENHANCED HEAT TRANSFER SURFACES IN HEAT EXCHANGER DESIGN.

Author(s) : WEBB R. L.

Type of article: Article

Summary

THIS STUDY EXTENDS PREVIOUS WORK OF BERGLES AND WEBB TO ESTABLISH A BROAD RANGE OF PERFORMANCE EVALUATION CRITERIA (PEC) APPLICABLE TO SINGLE PHASE FLOWS IN TUBES. THE EQUATIONS INCLUDE THE EFFECTS OF SHELL-SIDE ENHANCEMENT AND FOULING AND ARE APPLICABLE TO ROUGHNESS AND INTERNALLY FINNED TUBES. DETAILED PROCEDURES ARE OUTLINED TO CALCULATE THE PERFORMANCE IMPROVEMENT AND TO SELECT THE SURFACE GEOMETRY. PEC ARE PRESENTED FOR FOUR DESIGN CASES: (1) REDUCED HEAT EXCHANGER MATERIAL; (2) INCREASED HEAT DUTY; (3) REDUCED LOGMEAN TEMPERATURE DIFFERENCE; AND (4) REDUCED PUMPING POWER. THE 11 CASES DISCUSSED INCLUDE FIXED FLOW AREA AND VARIABLE FLOW AREA. APPROXIMATE PEC FOR TWO-PHASE EXCHANGERS ARE ALSO DISCUSSED.

Details

  • Original title: PERFORMANCE EVALUATION CRITERIA FOR USE OF ENHANCED HEAT TRANSFER SURFACES IN HEAT EXCHANGER DESIGN.
  • Record ID : 1982-0059
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 24 - n. 4
  • Publication date: 1981/04

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