This standard specifies the performance test method of utility boiler as the reference for the verification test (hereinafter referred to as "acceptance test" generally) and acceptance test on the performance of boiler.
This standard is applicable to the steam boiler with evaporative capacity above 35t/h or 35t/h and the pressure at steam outlet being higher than 2.45MPa or the temperature at exceeding 400℃. The performance test on the power generation boiler of the other parameters may be implemented by making reference thereto.
This standard is also applicable to the thermal efficiency test of boilers that is carried out for other purposes (such as condition adjustment, fuel variation, and equipment innovation).
This standard is not applicable to the performance test on the steam generators in nuclear power stations.
1 Subject Contents and Application Scope 1
2 Normative References 1
3 Terms, Symbols and Codes 2
4 Guideline 9
5 Test Methods and Measuring Instruments 12
6 Calculation of Thermal Efficiency 25
7 Thermal Efficiency Converted into Guaranteed Conditions 34
8 Net Boiler Efficiency 36
9 Boiler Evaporative Capacity, Steam Parameter and Other Operating Characteristics Tests 37
10 Error Analyses 46
11 Test Report 49
Annex A Common Legal Measuring Unit and their Conversion (Informative) 55
Annex B Conversion of ppm and mg/m3 of Various Gas Concentrations (Informative) 58
Annex C Characteristics of Common Gas and Ash (Additional) 59
Annex D Specific Heat of Coal and Ash (Additional) 61
Annex E Boiler Cinder Balance Percent (Additional) 62
Annex F Boiler Heat Loss due to Radiation at Rated Load (Additional) 63
Annex G Humid Air Alignment Chart (Additional) 64
Annex H Constant Section Division Principles of Grid Method and Determination of Representative Points (Additional) 65
Annex I Layout of Differential Pressure Conveyer Pipes among Throttle Devices of Flow Measurement (Additional) 68
Annex J Reading Revision of Spring Pressure Gauge and Sealing Liquid and Application of Liquid Column Type Pressure Meter (Additional) 72
Annex K Measurement and Calculation of Air Pre-heater Leakage Rate (Additional) 74
Annex L Elimination Method of Blunder Error (Referential) 75
Annex M Error Calculation Examples (Referential) 77
Annex N Temperature Measuring Equipment (Additional) 95
Annex O Flue Gas Multidraw Blender (Additional) 102
Annex P Settlement Ash Collector (Additional) 103
Annex Q Water and Steam Sampling Device (Additional) 104
