09/30201330 DC : 0
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BS EN 60534-8-3 - INDUSTRIAL-PROCESS CONTROL VALVES - PART 8-3: NOISE CONSIDERATIONS CONTROL VALVE AERODYNAMIC NOISE PREDICTION METHOD
Hardcopy , PDF
30-06-2011
English
FOREWORD
INTRODUCTION
1 Scope and limitations
2 Normative references
3 Definitions
4 Symbols
5 Valves with standard trim
5.1 Pressures and pressure ratios
5.2 Regime definition
5.3 Preliminary calculations
5.4 Regime I (subsonic flow)
5.5 Regimes II to V (common calculations)
5.6 Noise calculations
5.7 Calculation flow chart
6 Valves with special trim design
6.1 Introduction
6.2 Single stage, multiple flow passage trim
6.3 Single flow path, multistage pressure
reduction trim (two or more throttling steps)
6.4 Multipath, multistage trim (two or more
passages and two or more stages)
7 Valves with higher outlet Mach numbers
7.1 Introduction
7.2 Calculation procedure
8 Valves with experimentally determined
acoustical efficiency factors
9 Combination of noise produced by a control
valve with downstream installed two or more
fixed area stages
Annex A (informative) - Calculation examples
Bibliography
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