Related Resources: Heat Transfer

Experimental Performance Studies of a Plate Heat Exchanger

Heat Transfer Engineering
Heat Exchanger Design and Engineering

Experimental Performance Studies of a Plate Heat Exchanger
Darren R. Rlath
Lieutenant, United States Navy
B.A., Macalester College,
Naval Post Graduate School
80 Pages

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Open: Experimental Performance Studies of a Plate Heat Exchanger

Preface

A plate and frame heat exchanger experimental test stand was developed. Using this test stand a performance analysis was conducted. The analysis consisted of evaluating the performance of the heat exchanger at varying flow rates and inlet temperatures, to develop an effectiveness-NTU and Log Mean Temperature Difference relationships, under steady state operation. The measured heat rates were compared to the heat rates provided by the manufacturer and good/bad agreement was found. Standard operating procedures for the test stand were developed and implemented.

TOC

I. INTRODUCTION 1
II. HEAT EXCHANGER DESCRIPTION 5
A. GENERAL OVERVIEW 5
B. PLATE DESCRIPTION 11
III. EXPERIMENTAL APPARATUS 15
A. PADDLEWHEEL FLOW SENSOR 15
B. BAYONET-STYLE TANK HEATER 19
C. SELF-PRIMING CENTRIFUGAL PUMP 20
D. SYSTEM CONSTRUCTION 21
IV. SYSTEM ALIGNMENT AND OPERATION 23
A. INTRODUCTION 23
B. SYSTEM ALIGNMENT 23
C. OPERATING PROCEDURES 25
V. DATA COLLECTION AND ANALYSIS 29
A. APPROACH 29
B. OVERALL HEAT TRANSFER COEFFICIENT 29
C. THE EFFECTIVENESS-NTU METHOD 33
D. LOG MEAN TEMPERATURE DIFFERENCE METHOD 35
VI. DISCUSSION OF RESULTS 37
A. INTRODUCTION 37
B. OVERALL HEAT TRANSFER COEFFICIENT 37
C. HEAT RATE 38 D. HEAT EXCHANGER EFFECTIVENESS 39
VII. CONCLUSIONS AND RECOMMENDATIONS 43
APPENDIX A.
STANDARD OPERATIONAL PROCEDURES FOR ALIGNMENT AND OPERATION OF THE SUPERCHANGER UX-056 PLATE AND FRAME HEAT EXCHANGERPLATE HEAT EXCHANGER . 45
APPENDIX B. THERMOCOUPLE CALIBRATION 49
APPENDIX C. UNCERTAINTY ANALYSIS 51
APPENDIX D. EXPERIMENTAL DATA 55
LIST OF REFERENCES 61

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