Show from the following data taken for the automobile test performed on a 4 cylinder gasoline engine calculate the Brake Thermal Efficiency: Fuel intake = 9.78 lb/hour Brake output = 36.5 HP Specific gravity of gasoline at 60°F = 0.738 Room temperature = 78.5° F Throttle Setting = 9/16 full throttle High heating value (HHV) = 25,960 BTU/lb Conversion factor 1HP = 2,545 BTU/hour MUST show all steps. MUST show units in each step. 1 horsepower [international] = 0.746 kilowatt 1 kilogram = 2.204 lbs 1 BTU = 1.055 kilo joules

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.