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What is the specific brake work (kJ/kgfuel) of a 4 L single-cylinder propane engine operating stoichiometrically, if the heat transfer to the coolant is 17 kW, the air and fuel enter the engine at 298 K, the exhaust is 700 K, and the propane mass flow rate is 1.2 g/s?  b. A four-stroke 6 L engine is fueled lean with methane at an equivalence ratio ? = 0.8. It operates at 2000 rpm with a volumetric efficiency of 0.80. The exhaust temperature is 800 K, and the heat transfer to the coolant is 3.4 ×105 kJ/kmolfuel. What is the engine’s thermal efficiency and power?

What is the specific brake work (kJ/kgfuel) of a 4 L single-cylinder propane engine operating stoichiometrically, if the heat transfer to the coolant is 17 kW, the air and fuel enter the engine at 298 K, the exhaust is 700 K, and the propane mass flow rate is 1.2 g/s?  b. A four-stroke 6 L engine is fueled lean with methane at an equivalence ratio ? = 0.8. It operates at 2000 rpm with a volumetric efficiency of 0.80. The exhaust temperature is 800 K, and the heat transfer to the coolant is 3.4 ×105 kJ/kmolfuel. What is the engine’s thermal efficiency and power?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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a. What is the specific brake work (kJ/kgfuel) of a 4 L single-cylinder propane engine operating stoichiometrically, if the heat transfer to the coolant is 17 kW, the air and fuel enter the engine at 298 K, the exhaust is 700 K, and the propane mass flow rate is 1.2 g/s? 

b. A four-stroke 6 L engine is fueled lean with methane at an equivalence ratio ? = 0.8. It operates at 2000 rpm with a volumetric efficiency of 0.80. The exhaust temperature is 800 K, and the heat transfer to the coolant is 3.4 ×105 kJ/kmolfuel. What is the engine’s thermal efficiency and power?

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