ASME PTC 4.4 2023

$75.42

ASME PTC 4.4-2023 Gas Turbine Heat Recovery Steam Generators

Published By	Publication Date	Number of Pages
ASME	2023	98

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Description

The object of this Code is to establish procedures for conducting performance tests of Heat Recovery Steam Generators (HRSGs) used to recover gas turbine exhaust energy. The steam generator may include supplemental firing. This Code provides standard test procedures yielding the highest level of accuracy consistent with current engineering knowledge and practice.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
7	NOTICE
8	FOREWORD
9	ASME PTC COMMITTEE ROSTER
10	CORRESPONDENCE WITH THE PTC COMMITTEE
12	Section 1 Object, Scope, and References 1-1 OBJECT 1-2 SCOPE 1-3 TEST UNCERTAINTY 1-4 REFERENCES
14	Section 2 Definitions of Terms, Symbols, and Conversion Factors 2-1 DEFINITIONS
16	2-2 SYMBOLS 2-3 CONVERSION FACTORS 2-4 DESCRIPTIVE FIGURES
17	Tables Table 2-2-1 Symbols Used in ASME PTC 4.4
19	Table 2-3-1 Conversion Factors
21	Figures Figure 2-4-1 Typical GT HRSG Diagram
22	Figure 2-4-2 Typical Three-Pressure-Level HRSG With Supplementary Firing
23	Figure 2-4-3 Typical Two-Pressure-Level HRSG With Feedwater Heater and Supplementary Firing
24	Figure 2-4-4 Typical Single-Pressure-Level HRSG With Feedwater Heater and Supplementary Firing
25	Table 2-4-1 Legend for Figures 2-4-1 Through 2-4-4
26	Section 3 Guiding Principles 3-1 INTRODUCTION 3-2 PLANNING FOR THE TEST 3-2.1 Test Procedure 3-2.2 Responsibilities of Parties 3-2.3 Test Boundary Table 3-1-1 Typical Ranges of Uncertainties
27	3-2.4 Required Measurements 3-2.5 Design, Construction, and Startup Considerations 3-3 PRIOR AGREEMENTS
28	3-4 TEST PREPARATIONS 3-4.1 Schedule of Test Activities 3-4.2 Test Apparatus 3-4.3 Test Personnel 3-4.4 Equipment Inspection
29	3-4.5 Preliminary Run 3-4.6 Documentation of Correction Methodology 3-5 CONDUCTING THE TEST 3-5.1 Starting and Stopping Tests and Test Runs 3-5.2 Methods of Operation Before and During Tests
30	3-5.3 Adjustments Before and During the Test Table 3-5.2.2-1 Suggested Maximum Permissible Variations From Design Conditions Table 3-5.3-1 Suggested Maximum Permissible Variations in Test Conditions
31	3-5.4 Application of Corrections 3-5.5 Duration of Runs 3-5.6 Number of Test Runs 3-5.7 Number of Readings 3-6 CALCULATION, ANALYSIS, AND REPORTING OF RESULTS 3-6.1 Causes for Rejection of Readings 3-6.2 Repeatability of Test Runs
32	3-6.3 Comparison of Capacity From GT and HRSG Heat Balances 3-6.4 Test Uncertainty Figure 3-6.2-1 Repeatability of Runs
33	3-6.5 Test Report
34	Section 4 Instruments and Methods of Measurement 4-1 INTRODUCTION 4-2 GENERAL 4-2.1 Supplements 4-2.2 Location and Identification of Instruments 4-2.3 Sources of Error 4-2.4 Instrument Calibration
36	4-2.5 Plant Instrumentation 4-2.6 Redundant Instrumentation 4-3 TEMPERATURE MEASUREMENT 4-3.1 General 4-3.2 Measurement Systematic Uncertainty for Temperature
37	4-3.3 Recommended Temperature Measurement Devices Table 4-3.2-1 List of Potential Sources and Typical Ranges of Uncertainties
39	Figure 4-3.3.2.1-1 Four-Wire RTDs Figure 4-3.3.2.2-1 Three-Wire RTDs
40	4-3.4 Calibration of Primary Parameter Temperature Measurement Devices 4-3.5 Temperature Scale 4-3.6 Typical Applications
42	4-4 PRESSURE MEASUREMENT 4-4.1 General
43	4-4.2 Measurement Systematic Uncertainty for Pressure 4-4.3 Recommended Pressure Measurement Devices Table 4-4.2-1 Potential Pressure Systematic Uncertainty Limits
44	4-4.4 Absolute Pressure Measurements
45	4-4.5 Gage Pressure Measurements
46	4-4.6 Differential Pressure Measurements 4-4.7 Air and Gas — Static and Differential Pressure
47	4-4.8 Steam and Water — Static and Differential Pressure 4-4.9 Barometric Pressure Figure 4-4.6.2-1 Five-Way Manifold Figure 4-4.6.2-2 Water Leg Correction for Flow Measurement
48	4-5 FLOW MEASUREMENT 4-5.1 General 4-5.2 Flowmeters 4-5.3 Air and Exhaust Gas Table 4-5.2-1 Maximum Allowable Flow Measurement Uncertainty
49	4-5.4 Liquid Fuel 4-5.5 Gaseous Fuel 4-6 LIQUID AND GASEOUS FUEL SAMPLING 4-6.1 General 4-6.2 Measurement Systematic Uncertainty for Sampling 4-6.3 Methods of Liquid or Gas Sampling 4-6.4 Fuel Analysis 4-6.5 Methods of Fuel Analysis
50	4-7 POWER MEASUREMENT 4-8 DATA COLLECTION AND HANDLING 4-8.1 Data Collection and Calculation Systems 4-8.2 Data Management 4-8.3 Construction of Data Collection Systems
51	Section 5 Calculations 5-1 INTRODUCTION 5-1.1 General Discussion 5-1.2 Data Reduction 5-2 INTERMEDIATE CALCULATIONS 5-2.1 Air Composition Calculations
54	5-2.2 Molar Flow Change Due to Fuel Gas Combustion Table 5-2.2.3-1 Combustion Ratios
55	5-2.3 Molar Flow Change Due to Fuel Oil Combustion
56	5-2.4 Fuel Gas Heating Value Table 5-2.4.3-1 Fuel Compound Heating Values
57	5-2.5 Fuel Oil Heating Value 5-2.6 Gas Enthalpy
59	Table 5-2.4.4-1 Gas Enthalpy Correlation Constants
61	5-2.7 GT Gas Composition 5-2.8 Desuperheater Spray Water Flow by Heat Balance
62	5-2.9 Extraction Flow by Heat Balance 5-3 GAS FLOW BY HRSG ENERGY BALANCE 5-3.1 HRSG Gas Flow Calculations
64	5-3.2 Duct Burner Gas Composition 5-3.3 HRSG Heat Loss
65	5-4 GAS FLOW BY GT ENERGY BALANCE 5-5 CORRECTION OF TEST CONDITIONS TO GUARANTEE 5-5.1 Correction of Steam Flow for Superheat 5-5.2 Capacity
66	5-5.3 Duct Burner Fuel Flow 5-5.4 Gas-Side Pressure Drop
67	Figure 5-5.2-1 Measured Capacity Comparison to Predicted Capacity
68	5-5.5 Steam-Side Pressure Drop
69	Section 6 Report of Results 6-1 SECTION 1: EXECUTIVE SUMMARY 6-2 SECTION 2: INTRODUCTION 6-3 SECTION 3: TEST DATA 6-4 SECTION 4: DATA REDUCTION, CORRECTIONS, AND RESULTS 6-5 SECTION 5: APPENDICES
70	Section 7 Test Uncertainty 7-1 INTRODUCTION 7-2 PRINCIPLES OF AN UNCERTAINTY ANALYSIS 7-3 PRETEST UNCERTAINTY ANALYSIS 7-4 POST-TEST UNCERTAINTY ANALYSIS 7-5 INPUTS FOR AN UNCERTAINTY ANALYSIS
71	7-6 WEIGHTED CAPACITY 7-6.1 General 7-6.2 Data Required 7-6.3 Calculations 7-7 ADDITIONAL CONSIDERATIONS
72	NONMANDATORY APPENDICES NONMANDATORY APPENDIX A BYPASS DAMPER LEAKAGE A-1 GENERAL A-2 DAMPER LEAKAGE A-3 LEAKAGE RATE
73	NONMANDATORY APPENDIX B FUEL SENSIBLE HEAT B-1 INTRODUCTION B-2 FUEL OIL
74	NONMANDATORY APPENDIX C HRSG HEAT LOSS C-1 HRSG HEAT LOSS C-2 INSULATED CASING DESIGN CRITERIA
75	Table C-2-1 Physical Properties of Example Gas Composition
76	NONMANDATORY APPENDIX D UNCERTAINTY SAMPLE CALCULATION D-1 INTRODUCTION D-2 BASICS OF AN UNCERTAINTY ANALYSIS
77	D-3 EXAMPLE 1: FEEDWATER FLOW UNCERTAINTY ANALYSIS D-4 EXAMPLE 2: PREDICTED HP STEAM FLOW SENSITIVITIES AND UNCERTAINTY BY THE HRSG ENERGY BALANCE METHOD D-5 EXAMPLE 3: PREDICTED HP STEAM FLOW SENSITIVITIES AND UNCERTAINTY BY THE GT ENERGY BALANCE METHOD D-6 EXAMPLE 4: HP STEAM FLOW UNCERTAINTY BY WEIGHTED AVERAGE
78	Figure D-3-1 Sensitivity Calculation Table for the Measured HP Steam Flow Uncertainty Example
79	Figure D-3-2 Calculation Table for the Measured HP Steam Flow Post-Test Uncertainty Example
80	Figure D-4-1 Sensitivity Calculation Table for the Predicted HP Steam Flow Uncertainty Example — HRSG Energy Balance Method
81	Figure D-4-2 Calculation Table for the Predicted HP Steam Flow Uncertainty Example — HRSG Energy Balance Method
83	Figure D-5-1 Sensitivity Calculation Table for the Predicted HP Steam Flow Uncertainty Example — GT Energy Balance Method
85	Figure D-5-2 Calculation Table for the Predicted HP Steam Flow Uncertainty Example — GT Energy Balance Method
87	Table D-6-1 Example of Uncertainty Weighted Average in Determination of the Predicted HP Steam Flow Using Both the HRSG and GT Energy Balance Methods
88	Table E-1-1 Main Sheet: Working Fluid Data NONMANDATORY APPENDIX E SAMPLE CALCULATIONS E-1 CALCULATION WORKSHEETS
89	Figure E-1-1 Duty Summary Table
90	Figure E-1-2 Sheet A: Air Composition
91	Figure E-1-3 Sheet C: Fuel Gas Combustion Mole Change
93	Figure E-1-4 Sheet E: Inlet Gas Composition
94	Figure E-1-5 Sheet I: Gas Enthalpy
95	Figure E-1-6 Sheet H: Outlet Gas Composition
96	Figure E-1-7 Sheet J: Air Enthalpy