1- An engine mounted on a ship has a thermal efficiency 80 % of that of the corresponding Carnot cycle. The engine receives heat from the sea at 300 K and rejects heat to the atmosphere at 280 K. The work output from the engine is dissipated through an agitator to heat 500 kg of sea water to 355 K. What quantity of heat must be extracted from the sea water to provide the required heating effect? Take specific heat of sea water Cp = 4.186 kJ/kg K.

1- An engine mounted on a ship has a thermal efficiency 80% of that of the corresponding Carnot cycle. The engine receives heat from the sea at 300K and rejects heat to the atmosphere at 280K. The work output from the engine is dissipated through an agitator to heat 500kg of sea water to 355K. What quantity of heat must be extracted from the sea water to provide the required heating effect? Take specific heat of sea water Cp=4.186kJ/kgK