BS 5860:1980
Current
The latest, up-to-date edition.
Method for measuring the efficiency of hydraulic turbines, storage pumps and pump-turbines (thermodynamic method)
Hardcopy , PDF
English
02-29-1980
National foreword
Cooperating organizations
1 Object and scope
1.1 Purpose of this standard
1.2 Excluded topics and limitations
1.3 Principle
2 Terms, definitions, symbols, units
3 Procedure for measurement of mechanical energy per
unit mass
3.1 General
3.2 "Direct" operating procedure
3.3 "Partial expansion" operating procedure
3.4 Expansion procedure for thermometer calibration
4 Determination of hydraulic energy per unit mass
5 Apparatus
5.1 Main measurements
5.2 Auxiliary measurements
6 Conditions for taking measurements - Corrective
terms
6.1 Measuring section and "sampling" conditions
6.2 Particular flow arrangements
6.3 Instability of total energy at inlet
6.4 Extraneous exchanges
6.5 Limitation of corrections
6.6 Unfavourable conditions for some systems
7 Precision of measurements
7.1 Estimation of error due to determination of the
main terms (fem)1
7.2 Estimation of error in corrections due to
secondary phenomena (fem)2
7.3 Errors due to faulty exploration of flow
distribution (fem)3
Comments on the origin of the values for the
thermodynamic properties of water
Tables
I Values of the volume of water per unit mass v
II Values of the isothermal factor a
III Values for heat per unit mass cp
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