The following data was obtained from a test on a single-cylinder, four-stroke oil engine. Cylinder bore = 15 cm, stroke

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The Following Data Was Obtained From A Test On A Single Cylinder Four Stroke Oil Engine Cylinder Bore 15 Cm Stroke 1 (88.81 KiB) Viewed 46 times

The following data was obtained from a test on a single-cylinder, four-stroke oil engine. Cylinder bore = 15 cm, stroke = 25 cm, area of indicator diagram = 7 cm2, length of indicator diagram = 4 cm, indicator spring constant = 5.5 bar/cm, engine speed = 400 rpm, brake torque = 300 N-m, fuel consumption = 3 kg/h, calorific value of fuel = 44200 kJ/kg, cooling water flow rate = 4 kg/min, cooling water temperature rise = 42°C, specific heat of water = 4.1868 kJ/kg. °C, AFR = 18, specific heat of exhaust gas = 1.25 kJ/kg.K, exhaust temperature rise = 300 K. Calculate (a) the mechanical efficiency, (b) draw heat balance sheet in kW and percentage basis.