Two tenths (kmol) of ideal nitrogen (M=28.01 kg/kmol) in a piston-cylinder assembly undergoes two processes Process 1> 2: constant pressure at 8 bar from Vi=2.5 (m³) to V2=1.25 (m³) Process 2 →3: constant volume to pressure of 10 bar Ignoring kinetic and potential effects, find the work done and heat transfer using tables. The value of universal gas constant is 8.314 kJ/kmol.K.

Two tenths (kmol) of ideal nitrogen (M=28.01 kg/kmol) in a piston-cylinder assembly undergoes two processes Process 1> 2: constant pressure at 8 bar from Vi=2.5 (m³) to V2=1.25 (m³) Process 2 →3: constant volume to pressure of 10 bar Ignoring kinetic and potential effects, find the work done and heat transfer using tables. The value of universal gas constant is 8.314 kJ/kmol.K.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 30RQ: A gas is compressed inside a compressor's cylinder. When the piston is at its bottom dead center,...

See similar textbooks

Similar questions

In what four states does matter exist? Cite examples of each.
A gas is compressed inside a compressor's cylinder. When the piston is at its bottom dead center, the gas is initially at 10 psig, 65F, and 10.5 in3. After compression and when the piston is at top dead center, the gas is 180Fand occupies 1.5 in3. What would be the new pressure of the gas in psig?
1. A certain ideal gas Y has molecular weight of 25 g/mol and specific heat ratio of 3. Initially, Y has pressure of 200kPa and volume of 2m3. The volume was doubled during heat transfer. Find the heat transfer if it underwent a process described by ( a. n=1 b. n=Cp/Cv C. n=2
2.33 Carbon monoxide gas (CO) contained within a piston- Process 1-2: Expansion from p, 5 bar, V = 0.2 m' to Process 2-3: Constant-volume heating from state 2 to state Process 3-1: Constant-pressure compression to the initial V, = 1 m'. during which the pressure-volume relationship is cylinder assembly undergoes three processes in series to pV = constant. 3, where p3 5 bar. %3D state. Sketch the processes in series on p-V coordinates and msi uate the work for each process, in kJ.
Consider the following: 1. When gas is heated at constant volume, its pressure and temperature will decrease. P, = P. , Volume V, 3. Change in internal Energy is equals to change in heat transfer 4. The value of the work done is zero. Which of the above condition relates with isochoric process? Select one: O a. 1,2 and 4 only O b. 1 and 3 only O c. 3 and 4 only O d. 1, 2, 3 and 4 2. Pressure
1. A certain ideal gas X has molecular weight of 10 g/mol and specific heat ratio of 2. Initially, X has pressure of 200kPa and volume of 2m3. The pressure was doubled during heat transfer. Find the heat transfer if it underwent a process described by ( a. n=infinity b. n=Cp/Cv C. n=3
1Kg of water contained in a piston-cylinder assembly undergoes five processes in series as follows: Process 1-2: constant pressure heating at 10 bar from saturated vapor Process 2-3: constant volume cooling to P; = 5 bar and T; = 180°C Process 3-4: constant pressure compression to x=0.45 Process 4-5: constant volume heating to Ps = P1 Process 5-1: constant pressure heating to saturated vapor a. Sketch the above processes on both T-v and P-v diagrams b. Find quality at point 5, and the work done in each process
Q2: : Which statements are true for source of requirements and which are false? If false, please give the correct answer. 1. Both Enthalpy and Work are state functions 2. A process is endothermic when AH is Negative 3. Enthaipies of Reaction is same as heat of reaction 4. Heat capacity is the amount of energy required to raise the temperature of 1 g of a substance by 1 K.
2. A gas undergoes a thermodynamic cycle consisting of the following processes:i) Process 1-2: Constant pressure p1 = 1.4 bar, V1=0.028 m3, W1-2=10.5 kJii) Process 2-3: Compression with pV=Constant, U3=U2iii) Process 3-1: Constant Volume, U1-U3 = -26.4 kJThere are no significant changes in KE and PEi) Sketch the cycle on a p-V diagramii) Calculate the network for the cycle in kJiii) Calculate the heat transfer for process 1-2iv) Show that ƩW = ƩQ
1. Where necessary, assume air as an ideal gas and consider R = 287 J/(kg.K), Cp = 1005 J/(kg.K), v = 718 J/(kg K)- a) A nozzle is a device that is used to increase the velocity of a fluid by varying the cross-sectional area. At the last section of a jet engine (Fig Q1.a, section 5), air with a mass flow rate of 50 kg/s at a pressure of 500 kPa and a temperature of 600 K enters a nozzle with an inlet cross-sectional area of 5 m2 The exit area of the nozzle is 20% of its inlet area. The air leaves the nozzle at a velocity of 300 m/s. The nozzle is not well-insulated and during this process, 5 kl/kg heat is lost. 2 Compre 1 Conttnhanbe Figure Q1.a: Schematic of a Jet engine. (i) In analysing this nozzle using the 1st law of thermodynamics, the change in which type of energy is negligible? (ii) Determine the density and velocity of the air entering the nozzle. (ii) Calculate the density of the air as it leaves the nozzle. (iv) Determine the temperature of the air as it leaves the nozzle.…
Carbon dioxide (CO2) contained within a piston cylinder undergoes three processes in series: = p1 10 bar, V₁ = 0.25 m³, to V₂ = 2.3 m³ during Process 12: Expansion from which the pressure-volume relationship is pV = constant Process 23: Constant volume heating from state 2 to state 3 where p3 = 10 bar Process 31: Constant pressure compression to the initial state. Sketch (don't have to use a computer) the process in series on a pV diagram (p on y-axis, V on x-asix) and evaluate the moving boundary work for each process.
5. There are 3 kg/min of steam undergoing an isothermal process from 30 bar and 350 °C to 7 bar. (note 1 bar = 100 kPaa). Find: a) AS (kJ/k), b) Heat transferred (kJ), c) AH (kJ), d) AU (kJ)