MAN B&W S65ME-C8.2-GI-TII, Project Manual

Page: 182 / 395

MAN B&W 7.05
Page 2 of 3
MAN Diesel MAN B&W MC/MC-C, ME/MEC/ME-B/GI engines 198 39 512.8
The heater is to be of the tube or plate heat ex-
changer type.
The required heating temperature for different oil
viscosities will appear from the ‘Fuel oil heating
chart’, Fig. 7.05.01. The chart is based on informa-
tion from oil suppliers regarding typical marine
fuels with viscosity index 7080.
Since the viscosity after the heater is the control-
led parameter, the heating temperature may vary,
depending on the viscosity and viscosity index of
the fuel.
Recommended viscosity meter setting is 1015 cSt.
Fig. 7.05.01: Fuel oil heating chart
Fuel oil viscosity specified ... up to 700 cSt at 50°C
Fuel oil flow .................................... see capacity of
fuel oil circulating pump
Heat dissipation ................. see ‘List of Capacities’
Pressure drop on fuel oil side ........maximum 1 bar
Working pressure .......................................... 10 bar
Fuel oil inlet temperature .................approx. 100 °C
Fuel oil outlet temperature ........................... 150 °C
Steam supply, saturated .......................... 7 bar abs
To maintain a correct and constant viscosity of
the fuel oil at the inlet to the main engine, the
steam supply shall be automatically controlled,
usually based on a pneumatic or an electrically
controlled system.
4EMPERATURE
AFTERæHEATER
#
.ORMALæHEATINGæLIMIT
!PPROXIMATEæPUMPINGæLIMIT
C34ƒ#
SEC2Wľ&
C34ƒ#
!PPROXIMATEæVISCOSITY
AFTERæHEATER
C3T
SEC
2W
178 06 280.1
Fuel Oil Heater