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<strong>MAN</strong> B&W 7.05<br />
Fuel oil heater<br />
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Fig. 7.05.01: Fuel oil heating chart<br />
The heater <str<strong>on</strong>g>is</str<strong>on</strong>g> to be of the tube or plate heat exchanger<br />
type.<br />
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The required heating temperature for different oil<br />
v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosities will appear from the ‘Fuel oil heating<br />
chart’. The chart <str<strong>on</strong>g>is</str<strong>on</strong>g> based <strong>on</strong> informati<strong>on</strong> from oil<br />
suppliers regarding typical marine fuels with v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity<br />
index 70�80.<br />
Since the v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity after the heater <str<strong>on</strong>g>is</str<strong>on</strong>g> the c<strong>on</strong>trolled<br />
parameter, the heating temperature may vary,<br />
depending <strong>on</strong> the v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity and v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity index of<br />
the fuel.<br />
Recommended v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity meter setting <str<strong>on</strong>g>is</str<strong>on</strong>g> 0� 5 cSt.<br />
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Page 2 of 3<br />
Fuel oil v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity specified ... up to 700 cSt at 50°C<br />
Fuel oil flow .................................... see capacity of<br />
fuel oil circulating pump<br />
Heat d<str<strong>on</strong>g>is</str<strong>on</strong>g>sipati<strong>on</strong> ..................see ‘L<str<strong>on</strong>g>is</str<strong>on</strong>g>t of capacities’<br />
Pressure drop <strong>on</strong> fuel oil side ........maximum bar<br />
Working pressure .......................................... 0 bar<br />
Fuel oil inlet temperature .................approx. 00 °C<br />
Fuel oil outlet temperature ........................... 50 °C<br />
Steam supply, saturated ..........................7 bar abs<br />
To maintain a correct and c<strong>on</strong>stant v<str<strong>on</strong>g>is</str<strong>on</strong>g>cosity of<br />
the fuel oil at the inlet to the main engine, the<br />
steam supply shall be automatically c<strong>on</strong>trolled,<br />
usually based <strong>on</strong> a pneumatic or an electrically<br />
c<strong>on</strong>trolled system.<br />
<strong>MAN</strong> B&W MC/MC-C, ME/ME-B/ME�C/ME�GI engines 198 39 51�2.3<br />
<strong>MAN</strong> <strong>Diesel</strong><br />
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178 06 28�0.1
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