3. Ideal air (mass =lkg) in a piston-cylinder assembly undergoes two reversible processes in series from state 1, where T;=290K and Pi= 1bar. The gas constant is 8.314 (kJ/kmol.K). Process 1-2: compression to P3=5 bar in a polytropic process with n=1.19 Process 2-3: expansion in an adiabatic process to P3=1bar Determine the temperature at state 2 and 3 in (K) The total work and heat transfer. Plot on TS diagram.

3. Ideal air (mass =lkg) in a piston-cylinder assembly undergoes two reversible processes in series from state 1, where T;=290K and Pi= 1bar. The gas constant is 8.314 (kJ/kmol.K). Process 1-2: compression to P3=5 bar in a polytropic process with n=1.19 Process 2-3: expansion in an adiabatic process to P3=1bar Determine the temperature at state 2 and 3 in (K) The total work and heat transfer. Plot on TS diagram.

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

Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system located where the local g = 32 ft/s2. For the liquid, p1 = 20 psia, p2 = 80 psia, ρ1= 1.6 lbm/ft3, ρ2 = 0.32 lbm/ft3, v1 = 400 ft/s, v2 = 600 ft/s, u1 = 130 BTU/lbm, u2 = 130 BTU/lbm. During passage through the system, the fluid rejects 50 BTU/s as heat and rises 175 ft in elevation. What is the change in kinetic energy in BTU? Select one: a. 23.56 b. 29.34 c. 34.56 d. 39.95
Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system located where the local g = 32 ft/s2. For the liquid, p1 = 20 psia, p2 = 80 psia, ρ1= 1.6 lbm/ft3, ρ2 = 0.32 lbm/ft3, v1 = 400 ft/s, v2 = 600 ft/s, u1 = 130 BTU/lbm, u2 = 130 BTU/lbm. During passage through the system, the fluid rejects 50 BTU/s as heat and rises 175 ft in elevation. During passage through the system, the fluid rejects 50 Btu/s as heat and rises 175 ft in elevation. Determine the work in the system, in BTU. Select one: a. – 675.2 b. – 781.8 c. 892.6 d. 987.4
Ht.7. An ideal gas , Cp=(5/2)R and Cv=(3/2)R, is changed from (P1=1 bar and V1t= 10m3) to (P2=10bar and V2t=1m3) by the following mechanically reversible processes: a. Isothermal compression
Air (??=7/2R constant)Cp=7/2R constant) expands in a steady‑state device from 874.8 kPa874.8 kPa and 701.4 K701.4 K to 329.2 K.329.2 K. If the process is adiabatic and reversible, what is the final pressure (in units of kPa)?
Liquid water flows isothermally at 20°C through a one-inlet, one-exit duct operating at steady state. The duct’s inlet and exit diameters are 0.02 m and 0.07 m, respectively. At the inlet, the velocity is 10 m/s and pressure is 1 bar.At the exit, determine the mass flow rate, in kg/s, and velocity, in m/s. m2 = ? v2 = ?
Air enters a compressor operating at steady state at 14 lbf/in2, 60°F, with a volumetric flow rate of 5600 ft3/min. The compression occurs in two stages, with each stage being a polytropic process with n = 1.27. The air is cooled to 80°F between the stages by an intercooler operating at 45 lbf/in2. Air exits the compressor at 150 lbf/in2. 1. Determine the magnitude of the total power required by the compressor, in Btu/min. 2. Determine the magnitude of the total heat transfer rate for both compressor stages, in Btu/min. 3. Determine the magnitude of the heat transfer rate from the intercooler, in Btu/min.
Air enters a compressor operating at steady state at 14.7 lbf/in.2 and 60°F and is compressed to a pressure of 150 lbf/in.2 As the air passes through the compressor, it is cooled at a rate of 10 Btu per lb of air flowing by water circulated through the compressor casing. The volumetric flow rate of the air at the inlet is 5000 ft3/min, and the power input to the compressor is 700 hp. The air behaves as an ideal gas, there is no stray heat transfer, and kinetic and potential effects are negligible. Determine (a) the mass flow rate of the air, lb/s, and (b) the temperature of the air at the compressor exit, in °F.
Air enters a diffuser operating at steady state at 540°R, 15 lbf/in.2, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet area is 6.Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in lbf/in.2, at the exit.
Steam enters a one-inlet, two-exit control volume at location (1) at 360°C, 100 bar, with a mass flow rate of 2 kg/s. The inlet pipe is round with a diameter of 5.2 cm. Fifteen percent of the flow leaves through location (2) and the remainder leaves at (3). For steady-state operation, determine the inlet velocity, in m/s, and the mass flow rate at each exit, in kg/s.
Refrigerant 22 flows through a horizontal tube having an inside diameter of 4 cm. Therefrigerant flows at steady state and at the entrance to the tube it has with a quality of 0.3,temperature of 28°C, and velocity of 8 m/s. The refrigerant exits the tube as a saturatedliquid at 14 bar.Question:Determine:(a) the mass flow rate of the refrigerant, in kg/s.(b) the velocity of the refrigerant at the exit, in m/s.(c) the rate of heat transfer, in kW, and its associated direction with respect to therefrigerant
Air in a piston–cylinder assembly expands isentropically from T1 = 1800°R, p1 = 2000 lbf/in.2, to p2 = 20 lbf/in.2 Assuming the ideal gas model, determine the temperature at state 2, in °R, using (a) data from Table A-22E, and (b) a constant specific heat ratio, k = 1.4.
Refrigerant 134a enters an air conditioner compressor at 4 bar, 20 degrees celsius, and is compressed at steady state to 12 bar, 80 degrees celsius. The volumetric flow rate of the refrigerant entering is 5m3/min. The work input to the compressor is 75 KJ per kg of refrigerant flowing. Neglecting kinetic and potential energy effects, determine the magnitude of the heat transfer rate from the compressor, in KW.