4. An exhaust valve has a valve curtain area of 3 x 10³ m2 and valve discharge coefficient of 0.7. The cylinder pressure is 550 kPa while its temperature is 990K.If the exhaust system pressure is 103kPa with specific heat ratio of 1.35 with gas constant of 287 J/kg-K,determine the initial mass flow rate in the exhaust valve.

4. An exhaust valve has a valve curtain area of 3 x 10³ m2 and valve discharge coefficient of 0.7. The cylinder pressure is 550 kPa while its temperature is 990K.If the exhaust system pressure is 103kPa with specific heat ratio of 1.35 with gas constant of 287 J/kg-K,determine the initial mass flow rate in the exhaust valve.

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

For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASE thanks
For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASE
In an ammonia refrigerator , the pressure in the evaporator is 267. 58 KPa and theammonia at is 0.14 dry while at the exit is 0.86 dry . During compression the work done per kgof ammonia is 20 ,000 kg .m . Calculate volume of the vapor entering the compressor per minuteif the rate of ammonia circulation is 6.54 kg. The compressor has a volumetric efficiency of 90%and it runs at 150 rpm .The ratio of stroke to bore is 1 .Latent enthalpy of ammonia at basedon its evaporating pressure is 320 Kcal per kg and its latent specific volume of ammonia basedon its evaporating pressure is 0.436 m3 per kg .Specific volume of ammonia .A) 2.23 C) 2.46B) 3.23 D) 4.62
A 6cm inlet valve and a 3cm exhaust valve in a turbocharged engine, assume both valves have a discharge coefficient of 0.7 and a lift of 8mm. Find the mass flow rate (in kg/s) at IVO if the cylinder pressure is 115kPa, the inlet manifold pressure is 140kPa, and the manifold air temperature is 310K.
In a gas urbine unit. the gases flow through the turbine is 15 kg's aud the power developed by the tubine is 12000 kW The enthalpies of gases at the inler and outlet are 1260 kJkg and 400 kJke respectively. and the velocity of gases at the inlet and outlet are 50 m's aad 110ms respectively. Calculate The rate at which heat is rejected to the tubine. and The area of the inlet pipe given that the specifie volume of the gases at the mlet is 0.15 m3 kg.
A steam condenser receives 10 kg per second of steam with an enthalpy of 2570 KJ/kg. Steam condenses into liquid and leaves with an enthalpy of 160 KJ/kg, if cooling water passes through the condenser with temperature increases from 13oC to 24oC. Calculate the cooling water flow rate in kg/sec. pls dont skip anything show all solution including conversion of units
A single-stage reciprocating air compressor has two double acting cylinders each 46 cm diameter and 36 cm stroke and the piston rods are 50 mm diameter. The intake and discharge pressures are 101.325 kPa and 445 kPa, respectively, and the speed is 257 RPM. If the volumetric efficiency is 78%, the isothermal efficiency is 66%, mechanical efficiency is 94%, Actual Indicated Power, in kW is close to: 225.87 90.24 180.48 120.21 110.21
In an ammonia refrigerator , the pressure in the evaporator is 267. 58 KPa and the ammonia at is 0.14 dry while at the exit is 0.86 dry . During compression the work done per kg of ammonia is 20 ,000 kg .m . Calculate volume of the vapor entering the compressor per minute if the rate of ammonia circulation is 6.54 kg. The compressor has a volumetric efficiency of 90% and it runs at 150 rpm .The ratio of stroke to bore is 1 .Latent enthalpy of ammonia at based on its evaporating pressure is 320 Kcal per kg and its latent specific volume of ammonia based on its evaporating pressure is 0.436 m3 per kg .Specific volume of ammonia WITH PH DIAGRAM
For an exhaust valve of 1.43 * 10-3 m? effective area, calculate the mass flow rate through the valve (SI unit). The flow coefficient is 0.65 and the cylinder pressure and temperature are 625 kPa and 820 K. Assume exhaust system pressure is 103 kPa, the specific heat ratio is 1.4 and R =287 J/ kg.K.
Determine the power required for a forced draught and induced draught fan in a boiler having coalconsumption of 25 kg/min and air/fuel ratio of 19 by mass. The ambient air temperature and hotgas temperature at exit are 30C and 140C respectively. Draught required is equivalent to 32.2 mmof water and mechanical efficiency of motor/fan is merely 70%
Air is drawn into the compressor at pressure of 100 kPa and temperature of 22ºC. The volumetricflow rate at the compressor inlet is 0.4 m3/s. The compressor exit pressure is 900 kPa and thecompressor efficiency is 70%. The air leaving the compressor passes through a heat exchangerwhere it is cooled by transferring heat to the atmosphere at 22ºC. The outlet temperature of airafter the heat exchanger is 32ºC. The air passes through a valve and enters a 1 m3 rigid tank. Theinitial pressure and temperature of the air in the tank are 100 kPa and temperature of 22ºC,respectively. The final pressure and temperature of the air in the tank are 900 kPa and temperatureof 90ºC. During the filling process, the tank transfers heat to the surroundings (at 22ºC).Don’t assume constant specific heat.Determinea) The mass flow rate of air entering the compressor, ?̇ (kg/s).b) The rate of power consumed by the compressor, (kW).c) The rate of heat transfer from the heat exchanger to the atmosphere, (kW).d)…
An air cooled refrigerant condenser (similar to the ones used for home air conditioners) is shown, The system condenses 0.1 kg/sec of 60 C R134A refrigerant. Air temperature rises by 5 C passing over the coils. Calculate the mass flow rate of air pushed through the condenser.