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 = -25 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.Part AYour answer is correct.Calculate the net work for the cycle, in kJ.Wcycle = -7.63kJ

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Answered: A gas undergoes a cycle in a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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As shown below, a nonideal gas goes through the cycle ABCA. During the process BC, 8.5 J of heat was removed from the gas. During the process CA, 41.5 J of heat was removed from the gas. Determine WABCA & QAB. WABCA = 2J QAB = P(N/m²) 10 8 6 2 A B C 2 4 6 8 10 V (m³)
During a steady flow process, the pressure of the working substance drops from 200 to 20 psia, the speed increases from 200 to 800 ft/s the internal energy decreases 20 BTU/lb and the specific volume increases from 2 to 10 ft³/lb. No heat transferred. Determine the following: a)AKE in ft-lb;/Ibm b)APE in ft-lb/lbm c)AW: (flow work) ft-lb:/lbm d)AH in BTU e) Net work in hp for 15 lb/min of fluid (use mass flow rate for this item only)
One pound of an ideal gas undergoes and isentropic process from 95.3 psig and a volume of 0.6 ft³ to a final volume of 3.6 ft3. If Cp = 0.124 BTU/lbm-°R and Cy = 0.093 BTU/lbm-°R, determine: 1. Final temperature in °F 2. Final pressure in psia 3. Change in enthalpy in BTU 4. Work in BTU
When the system is at equilibrium at a particular temperature, C(s) + CO2(g) =2 CO(g) a 4-L flask contains 0.40 mol CO, 0.80 mol CO2, and 0.45 mol C. What is the value of K, at that temperature? O 0.050 O 0.20 1.8 O 0.44
Two spherical vessels of different sizes contain the same gas and are connected by means of a pipe with a valve. Sphere A has a diameter of 5 foot at the given pressure gauge of 50 kgf/cm2. Sphere B contains the same gas at 20 kgf/cm² gauge. The valve is opened and when the properties have been determined, it is found out that the gauge pressure is 36 kgf/cm2. The temperature at the two vessels before and after opening the valve is maintained at 21.1°C. If the barometric pressure is 750 torr and the gas inside the sphere is oxygen, find the following: The volume of sphere A is 113097.33 in3 The pressure of sphere A is 711.43 psia The temperature of sphere A is 529.98 R The pressure at sphere B in psia Temperature at sphere B in F The pressure of the gas when mixed in psia The temperature of the gas when mixed in K The atmospheric pressure in psi The diameter of Sphere B The total mass of the gas after opening the valve
A vapor compression refrigeration cycle uses steam as the working fluid. Steamflows steadily with a mass ow rate of 0.5 kg/s. Saturated vapor at 2.0 o C (State 1) enters an uninsulated compressor and it is compressed to 0.35 bar (State 2). Heat transfer at the rate of 105 kJ/s occurs from the compressor to its surroundings and the heat transfer exactly balances the entropy generation rate so that s2 = s1. The boundary and surrounding temperature of the compressor is measured to be 26.67 o C. Steam exits as saturated liquid at 0.34 bar (State 3) from the condenser. Steam leaving the condenser is then throttled in an expansion valve (State 4) before entering a constant pressure evaporator to complete the thermodynamic cycle. (a) Calculate the power (kJ/s) for the compressor. (b) Determine the isentropic efficiency (%) of the compressor. (c) Calculate the entropy generation for the compressor. (d) Find the coefficient of performance of the refrigeration cycle. (e) Show the cycle on T-s…
If the fluid is contained in a long, narrow vessel so it can expand in essentially one direction only, show that the effective coefficient linear expansion a is approximately equal to the coefficient of volume expansion b?
An aluminum cup of 150 cm3 capacity is completely filled with glycerin at 16°C. How much glycerin will spill out of the cup if the temperature of both the cup and glycerin is increased to 39°C? (The linear expansion coefficient of aluminum is 23 x 10-6 1/CO. The coefficient of volume expansion of glycerin is 5.1 x 104 1/C°) loth prob Number i Units
Q2: A drop of liguid foluen is kept al uniform temperkure t 299 K and is suspended in air by a fine wire. The initid radius at r= 2mm. The vapor pressure of foluene 299K is f=384 Kfe and the density of liguid toluene is 366 ky Im 3. Derive equation for the time tp for the drop b evupurete Completely in a large volume of still air Calculate the tine in seconds for Complete evaporahion.
The capillary rise (height) in mm of an ethanol having a viscosity of 0.032 J/m2. The tube has a diameter of 0.1 mm and the density of the fluid is 0.71 g/cm3
An aluminum pipe has a length of 60 m at a temperature of 10° C. An adjacent steel pipe at the same temperature is 5 mm longer than the aluminum pipe. At what temperature (degrees Celsius) will the aluminum pipe be 15 mm longer than the steel pipe? (Assume that the coefficients of thermal expansion of aluminum and steel are aAL=23x 10^-6°C and as=12x10^-6° C respectively)
CO2 is compressed in a cylinder through an equilibrium process from initial conditions of P1 = 100 kPa and V1 = 0.004 m3, to a final pressure of P2 = 500 kPa. During the process, pV1.22 = constant. Compute the work done.

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