BS 3122-1:1990

Committees responsible
National foreword
1 Scope and field of application
2 References
3 Definitions
Section one: Determination of refrigerating capacity
               and of volumetric efficiency
4 General procedure
5 Basic test conditions and deviations
6 Basis of calculations
7 Test methods
8 Method A: Secondary fluid calorimeter
9 Method B: Flooded system refrigerant calorimeter
10 Method C: Dry system refrigerant calorimeter
11 Methods D1 and D2: Refrigerant vapour flowmeter
12 Method F: Refrigerant liquid quantity using a
    flowmeter
13 Method G: Water-cooled condenser
14 Method J: Refrigerant vapour cooling
15 Method K: Calorimeter in compressor discharge line
Section two: Determination of the power, isentropic
               efficiency and coefficient of performance
16 General procedure
17 Determination of the power input
18 Determination of the isentropic efficiency
19 Determination of the coefficient of performance
Section three: Reporting of results
20 Test report
Annexes
A Type and calibration of measuring instruments and
    accuracy of measurement
B Symbols used in the text for calculations
C Estimation of errors
Table
1 Combinations of tests X and Y
Figures
1 Method A
2 Method B
3 Method C
4 Circuit diagrams for methods D1 and D2
5 Method F
6 Method G
7 Method J
8 Method K
9 Log p versus h diagram
10 Example showing the determination of errors in the
    enthalpy values for method G (see figure 6)

Gives test methods for the determination of the refrigerating capacity, the power, isentropic efficiency and coefficient of performance.