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1 pts Question 14 An automobile engine consumes fuel at a rate of 32 L/h and...
1 pts An automobile engine consumes fuel at a rate of 32 L/h and delivers 90...
1 pts An automobile engine consumes fuel at a rate of 32 L/h and delivers 90 KW of power to the wheels. The fuel has a heating value of 44000Kkg and a density of 800 kg/m ( 1m = 1000 L) The thermal efficiency of this engine is closer to: 0.33 0.42 0.29 0.55 0.71 O 0.12 0.21 0.37
An experimental spacecraft consumes a special fuel at a rate of 2.80 x 102 L/min. The...
An experimental spacecraft consumes a special fuel at a rate of 2.80 x 102 L/min. The density of the fuel is 0.800 g/mL and the standard enthalpy of combustion of the fuel is -43.2 kJ/g. Calculate the maximum power (in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s maximum power kW
An experimental spacecraft consumes a special fuel at a rate of 247 L/min. The density of...
An experimental spacecraft consumes a special fuel at a rate of 247 L/min. The density of the fuel is 0.900 g/mL and the standard enthalpy of combustion of the fuel is -54.2 kJ/g. Calculate the maximum power (in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s
An experimental spacecraft consumes a special fuel at a rate of 2.80 10² L/min. The density...
An experimental spacecraft consumes a special fuel at a rate of 2.80 10² L/min. The density of the fuel is 0.800 g/mL and the standard enthalpy of combustion of the fuel is -43.2 kJ/g. Calculate the maximum power in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s maximum power:
2. (11 marks total) A Diesel engine burns liquid Diesel fuel with a composition of 86% C, 14% H b...
please I need help with this thermodynamics problem
2. (11 marks total) A Diesel engine burns liquid Diesel fuel with a composition of 86% C, 14% H by mass, a higher heating value of 45.6 MJ/kg, and a lower heating value of 42.5 MJ/kg The engine uses 30 kg of air for combustion per kg of fuel burned. (a) (4 marks) Determine the quantities of product species (CO2, H2O, etc.) produced in units of kmols of product per kg fuel....
5. 20% A 2.4-L gasoline fuelled internal combustion engine produces a maximum power of 220 kW...
5. 20% A 2.4-L gasoline fuelled internal combustion engine produces a maximum power of 220 kW when the fuel is burned stoichiometrically with air. The thermal efficiency of the engine at this maximum power is 43%. Methanol (CH3OH) is to be used as an alternative biofuel for this engine. The stoichiometric air-fuel ratio for gasoline is 14.6. Assume a combustion efficiency of 98%. The lower heating values of gasoline and methanol are 44 MJ/kg and 20 MJ/kg, respectively. Consider the...
1. (35 pts) Specific fuel consumption rate curves are given for three different engines: A, B...
1. (35 pts) Specific fuel consumption rate curves are given for three different engines: A, B and C. Power and Torque curves for Engine 'B' are also given at Page 3. Please answer the following questions for Engine 'B'. a) (5 pts) Find the power and torque when it runs at the engine rpm of minimum specific fuel consumption rate. b) (5 pts) Find the torque and specific fuel consumption rate when it runs at the engine rpm of maximum...
A car travels at a constant velocity of 90 km/h along an expressway under-ambient temperature and...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
Problem 6. Compute the brake mean effective pressure of a four-cylinder, two-stroke engine, 100 mm bore...
Problem 6. Compute the brake mean effective pressure of a four-cylinder, two-stroke engine, 100 mm bore 125 mm stroke when it develops a torque of 490 Nm. Problem = 7. Find the brake thermal efficiency of an engine which consumes 7 kg of fuel in 20 minutes and develops a brake power of 65kW. The fuel has heating value of 42000 kJ/kg. Problem # 8. Find the mean piston speed of a diesel engine running at 1500 rpm. The engine...
In an engine performance test, two types of fuel are being used.They are diesel (D2) and...
In an engine performance test, two types of fuel are being used.They are diesel (D2) and biodiesel (B20).Tests were performed at 2500 rpm by using a four cylinder diesel engine with a diameter of 82.2 mm and 94.0 mm stroke size.Tests data are tabulated in Table 1 Table 1 Properties & test data Diesel (D2) Biodiesel (B20) Calorific value, (MJ/kg) 45.609 44.197 Viscosity @ 40°C, (mPa.s) 3.743 4.299 Density, (kg/m³) 838 850 Tourque, (Nm) 230 221 Fuel flowrate, (kg/hr) 12.89...
1 pts An automobile engine consumes fuel at a rate of 32 L/h and delivers 90 KW of power to the wheels. The fuel has a heating value of 44000Kkg and a density of 800 kg/m ( 1m = 1000 L) The thermal efficiency of this engine is closer to: 0.33 0.42 0.29 0.55 0.71 O 0.12 0.21 0.37
An experimental spacecraft consumes a special fuel at a rate of 2.80 x 102 L/min. The density of the fuel is 0.800 g/mL and the standard enthalpy of combustion of the fuel is -43.2 kJ/g. Calculate the maximum power (in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s maximum power kW
An experimental spacecraft consumes a special fuel at a rate of 247 L/min. The density of the fuel is 0.900 g/mL and the standard enthalpy of combustion of the fuel is -54.2 kJ/g. Calculate the maximum power (in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s
An experimental spacecraft consumes a special fuel at a rate of 2.80 10² L/min. The density of the fuel is 0.800 g/mL and the standard enthalpy of combustion of the fuel is -43.2 kJ/g. Calculate the maximum power in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s maximum power:
please I need help with this thermodynamics problem
2. (11 marks total) A Diesel engine burns liquid Diesel fuel with a composition of 86% C, 14% H by mass, a higher heating value of 45.6 MJ/kg, and a lower heating value of 42.5 MJ/kg The engine uses 30 kg of air for combustion per kg of fuel burned. (a) (4 marks) Determine the quantities of product species (CO2, H2O, etc.) produced in units of kmols of product per kg fuel....
5. 20% A 2.4-L gasoline fuelled internal combustion engine produces a maximum power of 220 kW when the fuel is burned stoichiometrically with air. The thermal efficiency of the engine at this maximum power is 43%. Methanol (CH3OH) is to be used as an alternative biofuel for this engine. The stoichiometric air-fuel ratio for gasoline is 14.6. Assume a combustion efficiency of 98%. The lower heating values of gasoline and methanol are 44 MJ/kg and 20 MJ/kg, respectively. Consider the...
1. (35 pts) Specific fuel consumption rate curves are given for three different engines: A, B and C. Power and Torque curves for Engine 'B' are also given at Page 3. Please answer the following questions for Engine 'B'. a) (5 pts) Find the power and torque when it runs at the engine rpm of minimum specific fuel consumption rate. b) (5 pts) Find the torque and specific fuel consumption rate when it runs at the engine rpm of maximum...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
Problem 6. Compute the brake mean effective pressure of a four-cylinder, two-stroke engine, 100 mm bore 125 mm stroke when it develops a torque of 490 Nm. Problem = 7. Find the brake thermal efficiency of an engine which consumes 7 kg of fuel in 20 minutes and develops a brake power of 65kW. The fuel has heating value of 42000 kJ/kg. Problem # 8. Find the mean piston speed of a diesel engine running at 1500 rpm. The engine...
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