BS 3986-2:1998
Current
The latest, up-to-date edition.
Methods of test for drying performance of agricultural grain dryers Additional procedures and crop specific requirements
Hardcopy , PDF
English
15-06-1998
Committees responsible
Foreword
Method
1 Scope
2 References
3 Definitions
4 Symbols and units
5 Test procedure
6 Grain quality
7 Methods of correction of test results
8 Test report
Annexes
A (informative) Grain moisture content and sampling
B (informative) Moisture removals in specific crops
C (normative) Testing reduction in grain germination
D (normative) Tables for correction of dryer performance
E (informative) Airflow calculations
Tables
1 Guide to dryer residence times
2 Minimum moisture removals
3 Reference air ambient conditions for specifying
drying performance
4 Example of observed and required specified reference
conditions
5 Example interpolation of four parameters
C.1 Tolerances for testing a difference between two
percentage germinations
D.1 Wheat: effect of ambient air temperature and relative
humidity at constant initial moisture content
of grain
D.2 Wheat: effect of grain initial and final moisture
content, drying air temperature and volumetric airflow
D.3 Oilseed rape (canola): effect of grain initial and
final moisture content, drying air temperature and
volumetric airflow
D.4 Maize: effect of grain initial and final moisture
content, drying air temperature and volumetric airflow
D.5 Rice: effect of grain moisture content range, drying
air temperature and volumetric airflow in
multi-pass drying
D.6 Sorghum: effect of grain initial and final moisture
content, drying air temperature and volumetric airflow
E.1 Values of coefficients, i and n, in the power law
equations describing the dependence of crop pressure
resistance on air velocity
Figures
A.1 The effect of range of variation in grain moisture
content on the standard error of the means of 15
samples
A.2 Effect of number of samples on the standard error of
the mean grain moisture content for different ranges
in variation
A.3 Relationship between moisture removed and range in
variation in grain moisture content for a confidence
level on evaporation rate of plus/minus 5% or better
at the 95% level of probability
List of references
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