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BS 5491:1977

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for rating and testing unit air conditioners of above 7 kW cooling capacity
Available format(s)

Hardcopy , PDF

Superseded date

15-04-1998

Language(s)

English

Published date

29-07-1977

Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Definitions
4. Test conditions
5. Rating conditions
6. Test methods for cooling capacity
7. Psychrometric methods
8. Compressor calibration method
9. Volatile refrigerant flow method
10. Condenser water method
11. Airflow measurement
12. Condensate measurement
13. Instruments
14. Test preparation and performance
15. Test results
Appendix
A. Determination of nozzle discharge coefficient
Tables
1. Cooling capacity test conditions
2. Maximum operating test conditions
3. Freeze-up test conditions
4. Enclosure sweat test conditions
5. Test method applicability
6. Data to be recorded
7. Test tolerances
Figures
1. Open tunnel air-enthalpy psychrometric test method
    arrangement
2. Closed tunnel air-enthalpy psychrometric test method
    arrangement
3. Enclosure air-enthalpy psychrometric test method
    arrangement
4. Typical air mixing and sampling devices
5. Pressure equalizing device
6. Airflow measuring nozzle
7. Airflow measuring apparatus

Covers air conditioners employing air- or water-cooled condensers and the use of air conditioners for cooling, but does not cover the performance of such conditioners when used for heating or humidification. Test conditions and methods for determining performance characteristics. Conditions on which ratings are based and test methods for determining ratings.

Committee
RHE/17
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

BS 1042-1.1(1981) : 1981 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS - SPECIFICATION FOR SQUARE-EDGED ORIFICE PLATES, NOZZLES AND VENTURI TUBES INSERTED IN CIRCULAR CROSS SECTION CONDUITS RUNNING FULL
BS 1042-1.5(1987) : 1987 MEASUREMENTS OF FLUID FLOW IN CLOSED CONDUITS - GUIDE TO THE EFFECT OF DEPARTURE FROM THE STANDARD CONDITIONS SPECIFIED IN SECTION 1.1
BS 1042-1.4(1984) : 1984 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS - GUIDE TO THE USE OF DEVICES SPECIFIED IN SECTIONS 1.1 AND 1.2

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