The following is an observation made during a trial on a 4-stroke diesel engine. The engine absorbs 10 kW (frictional power) when driven by an electric motor for startup. Speed of engine Brake torque Fuel used Calorific value of fuel Air supplied Cooling water circulated Outlet temperature of cooling water Temperature of exhaust gas Room temperature Specific heat of water Specific heat of exhaust gas 1750 rpm 327.4 Nm 15 kg/h 42000 kJ/kg 4.75 kg/min 16 kg/min 65.8 °C 400 °C 20.8 °C 4.19 kJ/kgK 1.25 kJ/kgK

International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter1: Introduction To Statics
Section: Chapter Questions
Problem 1.12P: A differential equation encountered in the vibration of beams is d4ydx4=2D where x = distance...
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QUESTION 3

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Question 3
The following is an observation made during a trial on a 4-stroke diesel engine. The engine absorbs 10
kW (frictional power) when driven by an electric motor for startup.
Speed of engine
Brake torque
Fuel used
Calorific value of fuel
Air supplied
Cooling water circulated
Outlet temperature of cooling water
Temperature of exhaust gas
Room temperature
Specific heat of water
Specific heat of exhaust gas
1750 rpm
327.4 Nm
15 kg/h
42000 kJ/kg
4.75 kg/min
16 kg/min
65.8 °C
400 °C
20.8 °C
4.19 kJ/kgK
1.25 kJ/kgK
Transcribed Image Text:Question 3 The following is an observation made during a trial on a 4-stroke diesel engine. The engine absorbs 10 kW (frictional power) when driven by an electric motor for startup. Speed of engine Brake torque Fuel used Calorific value of fuel Air supplied Cooling water circulated Outlet temperature of cooling water Temperature of exhaust gas Room temperature Specific heat of water Specific heat of exhaust gas 1750 rpm 327.4 Nm 15 kg/h 42000 kJ/kg 4.75 kg/min 16 kg/min 65.8 °C 400 °C 20.8 °C 4.19 kJ/kgK 1.25 kJ/kgK
Use the recorded information to determine:
the brake power,
the mechanical efficiency of the engine,
the brake specific fuel consumption, and
draw up heat balance sheet on kW basis
3.1
3.2
3.3
3.4
Transcribed Image Text:Use the recorded information to determine: the brake power, the mechanical efficiency of the engine, the brake specific fuel consumption, and draw up heat balance sheet on kW basis 3.1 3.2 3.3 3.4
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