BS 4954-1:1973
Current
The latest, up-to-date edition.
Methods for testing and rating induction units for air distribution systems Thermal and aerodynamic performance
Hardcopy , PDF
English
05-10-1973
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Cooperating organizations
Foreword
Methods
1. Scope
2. Definitions
3. Nomenclature
4. Instrumentation
5. Test for total pressure loss of primary air supply
6. Test for the relationship between primary air flow
rate and nozzle pressure
7. Test for inlet plenum leakage
8. Heat transfer measurements
9. Secondary air flow measurement
10. Interpretation of test results and rating
11. Thermal rating examples
Figures
1. Thermometer pockets in pipes of less than 75 mm
diameter
2a. Thermometer shield
2b. Thermocouple shield
3. Typical open circuit test equipment
4. Typical closed circuit test equipment
5a. Inverted tube pattern manometer
5b. Piezometer ring
6. Test for total pressure loss of primary air supply
- typical arrangement
7. Air supply arrangement for leakage test
8a. Location of inlet air temperature measuring
stations - bounded unit
8b. Location of inlet air temperature measuring
stations - free standing unit
9. Air flow chamber
10. Determination of air volume flow rate
11. Thermal characteristics
12. Thermal rating example
13a. Water temperature correction factor - heating
13b. Water temperature correction factor - cooling
Specifies methods of test for induction units with water coils for heating and/or sensible cooling duties. It gives instructions for the calculation, interpretation and interpolation of the test results for the thermal and aerodynamic rating of the units.
| Committee |
RHE/6
|
| DevelopmentNote |
Supersedes 71/36147 DC. (07/2005) Reviewed and confirmed by BSI, December 2012. (11/2012)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard specifies methods of test for induction units with water coils for either (or both) heating and sensible cooling duties. It gives instructions for the calculation, interpretation and interpolation of the test results for the thermal and aerodynamic rating of the units.
NOTE The titles of the British Standards referred to in this Part of this standard are shown on page 26.
| BS 4954-2:1978 | Methods for testing and rating induction units for air distribution systems Acoustic testing and rating |
| BS 1041-2.2:1989 | Code for temperature measurement. Expansion thermometers Guide to selection and use of dial-type expansion thermometers |
| BS 1042-1:1964 | Measurement of fluid flow in pipes. Orifice plates, nozzles and venturi tubes. |
| BS 1042-2(1964) : LATEST |
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