Considerations of the Exploitation Parameters of the Lost Heat Recovery Systems for a VLCC Tanker Ship

Nowadays, the shipbuilding industry is trying to improve the energy performance. This paper treats a crude oil super tanker ship of 305000 dwt studying the possibility of improving efficiency through heat recovery. Waste heat is heat, which is created by fuel burning or chemical response, and then "dumped" into nature despite the fact that it could, in any case, be reused for some helpful and financial reason. The basic nature of heat is not the same, but instead its "value". The system of how to recuperate this heat depends partially on the temperature of the waste heat fluid and the financial matters included. An extensive amount of hot flue gasses is created from boilers, ovens, stoves and heaters. On the off chance that a specific measure of this waste heat could be recouped, a lot of essential fuel could be spared. Main engine exhaust gas energy is by far the most attractive among the waste heat sources of a ship because of the heat flow and temperature. It is possible to generate an electrical output of up to 11 % of the main engine power by utilizing this exhaust gas energy in a waste heat recovery system comprising both steam and power turbines and combined with utilizing scavenge air energy for exhaust boiler feed-water heating.