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AALBORG
VISCOSITY -
TE,MPERATURE
CHART OM9280_01#A.2
INDUSTRIES
Viscosity - temperature chart
1
21-34/60
Description
The preheating temperature can be detennined by means of the viscosity - temperature
chart shown in Figure
1.
In order to use the chart, the viscosity
of
the fuel oil must be
known at a reference temperature.
It
should be noted that the preheating temperature should be set somewhat higher than
the temperature shown
in
the chart due to the heat loss between pre-heater and nozzle/
cup.
1.1
Example
The example
is
based on a pressure
jet
burner type
MS
or RMS.
Known:
Oil viscosity: 380 cSt. at 50°C
Required:
Preheating temperature
in
°C
Procedure
to
be
followed:
Step A: Follow the reference temperature line at 50°C vertically down to the inter-
section with the 380 cSt. viscosity line.
Step B: From this point move parallel down with the nearest fuel grade line.
Step C: When the line meets the recommended nozzle viscosity line, go vertically
up to the temperature axis.
Step D: At this point read the desired preheating temperature
of
150°C.
Language UK
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