The following processes occur in a reversible thermodynamic cycle:1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m/kg and work done -515 J.2-3: Isothermal compression to 4.2 bar.3-4: Expansion according to law pv1./= constant.4-1: heating at constant volume back to the iniüal conditions.Calculate the work done for the constant volume heating process?Moving to another question will save this response.«< QuestioacarA s PI R E

Given, P1= 1.05 bar = 105 kPa W1-2=-515 J = -0.515 kJ v1 = 0.1 m3/kg m=0.2 kg

The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. ,1.7-constani. 3-4: Expansion according to law pv1. 4-1: heating at constant volume back to the iniial conditions. Calculate the work done for the constant volume heating process? A Moving to another question will save this response. Quest

The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. ,1.7-constani. 3-4: Expansion according to law pv1. 4-1: heating at constant volume back to the iniial conditions. Calculate the work done for the constant volume heating process? A Moving to another question will save this response. Quest

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

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The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m3/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. 3-4: Expansion according to law pv1.7= constant. 4-1: heating at constant volume back to the initial conditions. Calculate the work done for the isothermal process in J.
The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m3/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. 3-4: Expansion according to law pv1.7= constant. 4-1: heating at constant volume back to the initial conditions. Calculate the work done for the constant volume heating process?
THERMOFLUID Consider a gas undergoing a thermodynamic cycle consisting of three processes from an initial state at P1 = 100 kPa , V1 = 0.81 m3. Process 1 - 2 : constant pressure compression work of 65 kJ,Process 2 – 3 : constant volume heating of 2600 kJ, andProcess 3 – 1 : isothermal expansion. a) Sketch the cycle on a clearly labelled P-V diagram and write appropriate First Law equations for all the three processes. Neglect the changes in kinetic energy and potential energy.
THERMOFLUID Consider a gas undergoing a thermodynamic cycle consisting of three processes from an initial state at P1 = 100 kPa , V1 = 0.81 m3.Process 1 - 2 : constant pressure compression work of 65 kJ,Process 2 – 3 : constant volume heating of 2600 kJ, andProcess 3 – 1 : isothermal expansion. a) Sketch the cycle on a clearly labelled P-V diagram and write appropriate First Law equations for all the three processes. Neglect the changes in kinetic energy and potential energy. b) Determine the:i. volume at the end of constant pressure compression, ii. net work for the thermodynamic cycle, and iii. heat transfer during constant pressure compression.
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
Air in a piston-cylinder assembly undergoes a Carnot power cycle. For the process numbers used in this problem refer to Figure 5.13 in the textbook and the figure below for a T-s diagram. The isothermal expansion and compression occur at 840 K and 295 K respectively. The pressures at the beginning and the end of the cycle are p1 = 400 kPa and p4 = 100 kPa, respectively. Assuming the ideal gas model for both constant and variable heat capacity, cp = 1.005 kJ/kg·K and k = 1.40 determine: a) the pressures p2 and p3. b) the heat transfer and work for each process. c) the thermal effici ency.
The following process occurs in a reversible thermodynamic cycle 1-2 :Reversible polytropic compression at pressure 0,5 bar at volume 0,07 m³ to a pressure 10,2 bar and specific volume 0,5 m³/kg. The index of compression may be taken as n 2-3 : Reversibly expansion with expansion index of 2 to pressure 2,6 bar. 3-1 : Reversible cooling at constant volume to the initial state Calculate : 1) The mass of fluid present 2)In steps to determine the value of the compression index n. 3)The compression work 4)the work done at a constant volume 5) the net work 6)Sketch the process on a P-v diagram indicating the units, index, pressures and the volumes
A gas undergoes a cycle in a piston–cylinder assembly consisting of the following three processes:Process 1–2: Constant pressure, p = 1.4 bar, V1 = 0.028 m3, W12 = 10 kJProcess 2–3: Compression with pV = constant, U3 = U2Process 3–1: Constant volume, U1 - U3 = -20 kJThere are no significant changes in kinetic or potential energy.(a) Calculate the net work for the cycle, in kJ.(b) Calculate the heat transfer for process 1–2, in kJ.
Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle starting at the beginning of the isothermal expansion are, V1 = 10.10 li, V2 = 14.53 li, V3 = 226.54 li, and V4 = 157.73 li. The cycle receives 21.5 kJ of heat. Determine (a) the net work, (b) the mean effective pressure, and (c) the thermal efficiency of the cycle.
Carbon dioxide gas is compressed at steady state from a pressure of 22 lbf/in2 and a temperature of 32oF to a pressure of 50 lbf/in2 and a temperature of 110oF. The gas enters the compressor with a velocity of 30 ft/s and exits with a velocity of 80 ft/s. The mass flow rate is 4000 lb/hr. The magnitude of the heat transfer rate from the compressor to its surroundings is 5% of the compressor power input. Use the ideal gas model with cp = 0.21 Btu/lb·oR and neglect potential energy effects.
Explain into details why thermodynamics depends on the entropy?