The overall engine heat transfer coefficient (W/m2.K) for a single cylinder engine with a 0.09 m bore and stroke, average combustion gas temperature of 980 K, coolant temperature of 345 K, and fuel-air flow rate of 1.8 *10^-2 kg/s is: (Assume the thermal conductivity is 0.062 W/m.K and the dynamic viscosity is 19*10^-6 N.s/m2). Select one: O a. 5630 O b. 4240 O c. 7238 d. 8320 e. 8924

The overall engine heat transfer coefficient (W/m2.K) for a single cylinder engine with a 0.09 m bore and stroke, average combustion gas temperature of 980 K, coolant temperature of 345 K, and fuel-air flow rate of 1.8 10^-2 kg/s is: (Assume the thermal conductivity is 0.062 W/m.K and the dynamic viscosity is 1910^-6 N.s/m2). Select one: O a. 5630 O b. 4240 O c. 7238 d. 8320 e. 8924

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

See similar textbooks

Similar questions

Consider a CI engine with a fuel injector mounted at the center of the cylinder head. The bore of the engine is 10 cm. The injector has a nozzle diameter of 0.05 mm and a discharge coefficient of 0.65. The fuel injection pressure is 600 bar. If the average cylinder pressure during injection is 50 bar and the density of the fuel is 800 kg/m3, estimate the time for a fuel particle to reach the cylinder wall.
6. A four-stroke, 6-cylinder, 3.6 Itr SI engine, is designed to have a maximum speed of 6000 r.p.m. At this speed, the volumetric efficiency of the engine is 0.92, fuel density is 700 kg/m C 15. Calculate: (1) %3! 0.85, C 0.6, Apg = 0.07 bar, at sea level T, = 27°C, p. = 1.03 bar, and AE Throat diameter of the carburetor. (2) Fuel orifice area. (3) AF at altitude of 4000 m
Consider an ideal gas with the following characteristics: R = 95 ft-lbf/lbm-R Cp = 0.25 +0.00035T (BTU/lbm-R) Solve for the value of k at 1000 R. Refer to the table shown below: m T1 T3 P1 P2 Carnot cycle 10 lbm 850 deg F 125 deg F 345 psig 150 psig Solve the following unknown parameters for Carnot cycle a. V4 b. QA and QR c. Wnet d. e. e mep
Determine the diameter of a fuel orifice for a 4-stroke engine working on diesel cycle developing 18 kw per cylinder at 2000 rpm, using 0.27 kg/kw.h. of fuel of 30° API. The duration of the crank injection is 30° of crank travel. The fuel injection pressure is 125 bar and combustion chamber pressure is 35 bar. Take velocitycoefficient = 0.9 and Pr=141.5/(131.5 + API)
4. The following data were obtained during a test on a diesel engine operating at 2800 rev/min: =132 Nm Dynamometer torque measurement Fuel consumption Intake air flow rate =12 kg/h =168 kg/h Calorific value of fuel =44 400 kJ/kg Engine cooling water flow rate =15.4 kg/min =48°C Engine cooling water temperature rise =8.7 kg/min Exhaust calorimeter cooling water flow rate Exhaust calorimeter cooling water temperature rise Exhaust gas temperature at exit from calorimeter =64°C = 85°C Specific heat of exhaust gas =1.1 kJ/kgK laboratory air temperature = 25°C Draw up percentage-based energy balance for the engine using the laboratory temperature as the datum.
An engine break horse power output of 10,000kw for an hour using 2,000kg of fuel per hour and having of L.C.V of 42,000kj/kg. Information:Heat converted into useful work per hour =NKwh;where N the power output in KW=3,600nkj.Heat supplied =M x K. Calculate the break thermal efficiency of the engine
The relative efficiency of a engine will be equal to if air standard efficiency & brake thermal efficiency of engine are 53.4% & 24.4% respectively. (a) 40.7% (B) 13.1% (C) 45.7% (d) 53.4%
Question 11 A 4 stroke gasoline reciprocating internal combustion engine operating stoichiometrically in an environment at standard temperature and pressure consumes 0.8 kilograms of fuel per hour and it has a displacement of 0.77 litres. The engine speed is 2,714 revolutions per minute. Assume the ambient air density is 1.2 kg/m3. What is the volumetric efficiency of the engine. Enter your answer as a rounded percentage. e.g., if the volumetric efficiency is 63.6%, enter the number 64.
pls ans quikly with 20 min
Please answer in 5 min