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In a ship with a main engine of 8 0 0 0 kW power and 3 0 % thermal efficiency, 6 0 % of the
In a ship with a main engine of kW power and thermal efficiency, of the total waste heat comes from the chimney.
is thrown away. It is desired to obtain hot water at C from the exhaust gas. Add distilled water to the boiler at C
taken at temperature. The main engine exhaust gas outlet temperature is C and the chimney atmosphere outlet temperature is C
The boiler working order is considered to be passes stages plate separation. Body diameter cm inner pipe diameter
When the inner pipe wall thickness is taken as mm the inner pipe wall thickness is mm and the body length is meters,
a Find the total heat transfer amount.
b Find the total heat transfer coefficient.
c Find the number of pipes to be used. passes pipe
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