BS 4856-2:1975
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
30-09-1975
Co-operating organizations
Foreword
Methods
1 Scope
2 References
3 Definitions
4 Nomenclature
5 Objects of the tests
6 Limitations of accuracy of the test method
7 Testing conditions
8 Steady state conditions
9 Instrumentation
10 Test equipment
11 Air temperature measurements
12 Primary fluid measurements
13 Test facility
14 Thermal rating: results and analysis
15 Air volume flow rate measurements
16 Enclosure sweating tests and condensate disposal
tests
17 Electrical rating test
18 Psychrometric test method
19 Air volume flow measurement for psychrometric test
method
20 Rating tests (psychrometric test method)
21 Examples (psychrometric test method)
Tables
1 Steady state conditions
2 Enclosure swear test conditions
3 Sensible cooling test series
4 Sensible and latent colling test series
5 Calculation of sensible cooling duty at room
temperature of 25 deg C
6 Results for example of sensible and latent cooling
Figures
1 Thermometer pockets
2 Multi-junction differential thermocouple
3 Inverted U-tube manometer
4 Shields for thermometer and thermocouple
5 Air sampling tubes
6 Air flow chamber
7 Chilled fluid test equipment
8 Piezometer ring
9 Extended air flow chamber
10 Room temperature measuring stations
11 Inlet temperature measurement
12 Water temperature correction factor KW
13 Determination of air flow rate
14 Example of recirculation correction factor
15 Heat transference
16 Rating example
17 Primary fluid plus metal thermal resistance
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.