BS 2009:1953

Cooperating organizations
Foreword
Specification
Section one: General
1. Scope
2. Permissible deviation
3. Basis of correction factors
4. Duration of test
5. Pressure measurement
6. Temperature measurement
7. Air flow measurement
8. Measurement of speed
9. Power consumption
Section two: Definitions and symbols
10. Definitions
11. Symbols
Section three: Testing and corrections of test results
to guarantee conditions
12. General
13. Gas constant
14. Specific heats
15. Induction motor drive
16. Uncooled machines when the test and guarantee
     gases are the same
17. Uncooled machines when the test and guarantee
     gases are different
18. Cooled machines when the test and guarantee gases
     are the same
19. Cooled machines when the test and guarantee gases
     are different
Example 1
Example 2
Example 3
Example 4
Example 5
Appendices
A. Calculation of gas constant, R, and ratio of
     specific heats gamma, for a mixture of gases
B. Theoretical basis of the code
Charts
Fig.7 Chart connecting alpha, r and gamma for values
        of r from 1.0 to 4.0
Fig.8 Chart connecting alpha, r and gamma for values
        of r from 1.46 to 2.00
Fig.9 Chart connecting alpha, r and gamma for values
        of r from 2.0 to 4.0
Fig.10 Chart connecting alpha, r and gamma for values
        of r from 4 to 10
Fig.11 Diagrammatic arrangement of test layout for
        turbo-compressor with throttling on the
        discharge (Examples 1 and 3)
Fig.12 Diagrammatic arrangement of test layout for
        turbo-compressor with throttling on the inlet
        (Example 2)
Fig.13 Diagrammatic arrangement of test layout for
        turbo-compressor (Example 4)

Test methods for axial flow and centrifugal compressors and exhausters, methods of measurement, and instruments. Method of correcting observed performance of these machines, to allow for difference between test and guarantee conditions. Examples illustrate application of code. Methods of calculating gas constant and ratio of specific heats for a mixture of gases, information on theoretical basis of code. Charts for calculations, diagrams of test layouts.