Problem 23.2 For a piston cylinder system where the air inside the piston begins with a pressure of 800 kPa, volume of 0.1 m³, and temperature of 600 K, calculate the p-dV work (make sure to indicate whether the work is going into the system or out of the system) and sketch the process on a p-V diagram for the following situations: (a) constant pressure process to a final volume of 0.3 m³ (b) constant volume process to a final pressure of 200 kPa (c) constant temperature process to a final volume of 0.3 m³ (d) a polytropic process where n = 1.4 to a final volume of 0.3 m³ [Note: treat air as an ideal gas]

Problem 23.2 For a piston cylinder system where the air inside the piston begins with a pressure of 800 kPa, volume of 0.1 m³, and temperature of 600 K, calculate the p-dV work (make sure to indicate whether the work is going into the system or out of the system) and sketch the process on a p-V diagram for the following situations: (a) constant pressure process to a final volume of 0.3 m³ (b) constant volume process to a final pressure of 200 kPa (c) constant temperature process to a final volume of 0.3 m³ (d) a polytropic process where n = 1.4 to a final volume of 0.3 m³ [Note: treat air as an ideal gas]

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

Q) A & B are rigid tanks. Tank A has volume of 1 m3 , contains steam with 4 MPa and 500 °C heated by external heat source with 130 kJ. The valve is open allowed to part of steam exit from the tank A to an evacuated and insulated tank B at constant temperature, then the valve is close when the final pressure in tank A reaches to 2 MPa and the mass reduce by 2/3. Determine the volume of tank B. A в
A piston-cylinder system contains 1 kg of air at (V1, P1, T1). The air is heated at constant pressure process until the volume is doubled. Then the air is compressed according to the low (PV3 =C) until the piston regains its original position. Then the air is cooled at constant volume processes until the pressure reach to the original value. Assume (V1, P1), Draw the cycle on p-v diagram and calculate 1- Net work done 2- Net heat
Water is heated in a closed container with rigid walls that is a perfect cube (1 m x 1 m x 1 m). The initial volume of the water (liquid + vapor) is 1 m'. The initial temperature of the water is 100 °C and it has a quality of 0.3. It is heated until it reaches a final pressure of 700 kPa. a. Sketch the process on the P V diagram. b. What is the work done by the water during this heating process in kJ? c. What is the final temperature of the water? d. What is the heat required in order for this process to occur in kJ? P V
Nitrogen with a mass of 1.5 kg expands at a constant pressure. The initial pressure and temperature in the piston cylinder assembly is 170 kPa and 27 deg. C, respectively. Due to heat transfer, the system reached a final temperature of 200 deg. C. Calculate the heat required and the non flow work. Please show the solution. Thank you
The pressure of the air in a starting vessel is 40 bar and the temperature is 24°C. If a fire in the vicinity causes the temperature to rise to 65 °C. Neglect anyincrease in the volume of the vessel which is 5 liters. determine the following: a. The thermodynamic process the problem representsb. the pressure, temperature, and volume after the processc. change in internal energy, change in enthalpy and change in entropy
Between 1-2: Isothermal compression (1st process)Between 2-3: Isometric compression (2nd process)Between 3-1: Adiabatic expansion (3rd process) A cyclic process through which N2 gas, which is considered to be the ideal behaving, is treated, has been described above. In case 1, the volume of gas is 9.6 m3, pressure 200 kPa. Since the pressure in state 3 is 750 kPa, find the work done in the whole process in kJ. Draw the P-V diagram for the cycle.
The plant runs at 300r.p.m. and each cylinder has a volumetric The specific heat capacity of liquid ammonia = diagrams and showing all given and calculated values; QUESTION 3 1.5kJ/kgK Calculate: 4.2 the mass flow rate of refrigerant per second; 4.3 the refrigeration effect per second; 4.4 the power to drive the compressor if the mechanical efficiency is 80%.
1. Three kilograms of neon in a constant volume system. The neon is initially at 550 kPa and 350 K. Its pressure is increased to 2000 kPa by a paddle work with 210 kJ of heat added. Find (a) the final temperature, (b) the change in internal energy, (c) the change in enthalpy, (d) the nonflow work. 2. An ideal gas with Cv = 1.62 kJ/kg-K and R = 273J/kg-K expands from 0.15 m3 and 27oC to 0.35 m3 during an isobaric process with p = 150kPa. Consider the process reversible nonflow, determine (a) the heat, (b) the change in internal energy, © the work nonflow, (d) the change in entropy. 3. A perfect gas with R = 320 J/kg-K and Cp = 1.6 kJ/kg-K. If 150 kJ of heat is added to 5 kg of this gas at constant pressure when t1 = 35 deg.C, find (a) the work nonflow, (b) U, (c)S. 4. Three kilograms of an ideal gas with R = 204 J/kg-K and k = 1.667 have 316 kJ of heat added during an isobaric process. The initial temperature is 38oC. Determine (a) Wnf, (b) U, (c) S. 5. During an isothermal…
a) Refrigerant-134a is throttled from the saturated liquid state at 700 kPa to a pressure of 160 kPa as shown in Fig. Q2(a) Compute the: i. Temperature drop during throttling ii. final specific volume of the refrigerant. P= 700 kPa sat. liquid R-134a P2 = 160 kPa Fig. Q2(a)
A reciprocating compressor compresses air 1/8 th times of its initial volume. If the pressure of air beforecompression is 5 bar and volume of air after compression is .016m 3 , when the law followed is pv 1.6 =constant. Calculate the work done and draw the process on PV diagram.
3. A polytropic process of air from 150 psia, 300 F, and 1 ft occurs to P2 =20 psia in accordance with PV3 = C. Determine: a. Tz and V2 b. Δυ, ΔΗ, Δs c. SVdp and -S Vdp d. Compute the heat from the polytropic heat and check by the equation Q= Au+S Vdp е. Find the nonflow work and f. The steady flow work for AK=0
Q2/ A 0.2 m' cylinder containing of air has an externally loaded piston. Initially the air at 350 kPa, 150 °C. Now the air is compressed depending of the relation PV4 = constant to a final temperature 250 °C. Determine the heat transfer during the process.