The engine that powers a crane burns fuel at a flame temperature of 2623°CIt is cooled by 15°C airThe crane lifts a 3518 kg steel girder 30 m upwardHow much heat energy is transferred to the engine by burning fuel if the engine is 29% as efficient as a Carnot engine?Please I need help! If someone could answer this please explain to me how to get the answer.
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There are two equations for maximum efficiency of a Carnot engineEq1: Maximum efficiency (Th – Tc) ÷ Th Convert temperature to ?K, Flame temperature 2896?K, Air temperature 288?K Maximum efficiency (2896 – 288) ÷ 2896 2608 ÷ 2896 AND Eq2: Maximum efficiency Work ÷ Heat energy entering the system Work done by the crane 3518 9.8 30 1,034,292 Set Eq1 Eq2 2608 ÷ 2896 1,034,292 ÷ Heat energy entering the system Heat energy entering the system 1,034,292 ÷ (2608 ÷ 2896) Heat energy entering the system 1,034,292 (2896 ÷ 2608) This is the amount of heat energy that is transferred to the engine by burning fuel if the engine is a Carnot engineIn this problem, the engine is 29% as efficient as a Carnot engineHeat energy 0.29 1,034,292 (2896 ÷ 2608) 333,067.4054 J Check: Heat energy entering the system 1,034,292 (2896 ÷ 2608) 1,148,508.294 J 0.29 1,148,508.294 333,067.4054 J If you have any questions, make me one of your contactsYour questions will come directly to my yahoo email address! I hope this helps you understand how to solve a this type of problem.
