Kinetifinal, in MPa, (b) the work, in kJ, and (c) the heattransfer, in kJ. PS to 103.129 As shown in Fig. P3.129, one side of a rigid, insulatedcontainer initially holds 2 m³ of air at 27°C, 0.3 MPa. The airis separated by a thin membrane from an evacuated volumeof 3 m³. Owing to the pressure of the air, the membranestretches and eventually bursts, allowing the air to occupythe full volume. Assuming the ideal gas model for the air,determine (a) the mass of the air, in kg, (b) the finaltemperature of the air, in K, and (c) the final pressure of theair, in MPa.Jasmவஸ்

Answered: Image /qna-images/answer/b2213599-c6c3-4265-9bf7-44d1e7db6cf0.jpg

Answered: Kineti final , in MPa, (b) the work, in…

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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Refrigerant 134a undergoes a poly tropic process in a Piston- cylinder assembly from an initial state of saturale'a vapor at 2 bår to a final State of 12 bar and 80 °C. if the mass of the refrigerant is akg, Cal culate the work for the process 'in kJ using 's Signifigant Agures
3.51 WP Referring to Fig. P3.51, water contained in a piston-cylinder assembly, initially at 1.5 bar and a quality of 20%, is heated at con- stant pressure until the piston hits the stops. Heating then continues until the water is saturated vapor. Show the processes of the water in series on a sketch of the T-v diagram. For the overall process of the water, evaluate the work and heat transfer, each in kJ/kg. Kinetic and potential effects are negligible.
3.25 WP As shown in Fig. P3.25, Refrigerant 134a is contained in a piston-cylinder assembly, initially as saturated vapor. The refrigerant is slowly heated until its temperature is 160°C. Dur- ing the process, the piston moves smoothly in the cylinder. For the refrigerant, evaluate the work, in kJ/kg. Patm = 1 bar Piston Refrigerant 134a m FIGURE P3.25 Weight=471.1 N D = 0.02 m Initial: Saturated vapor Final: T₂ = 160°C
Q2.3 Solar houses are designed to retain the heat absorbed during the day so that the stored hear can be released during the night. A botanist produces steam at 100 during the day and then allows the steam to cool to 0 °C and freeze during the night. How many kilograms of water are needed to store 200 kJ of energy for the process? (Use the laten heat of vaporization of water L. = 22.6 × 105 3/ Kg, the laten heat of fusion of water L₁= 33.5 x 104 J/Kg, and the specific heat capacity of water c = 4186 J/kg. C. Hint: you need to use both the formula of the heat Q = mcVT and Q = mL)
thermodynamics question
Q2: For Fig (1): A. Calculate specific enthalpy, specific internal energy. temperature and specific volume for points a-g. B. Draw the figure in PI diagram and locate the position of the points a - g. C. Draw the figure in TV position of the points a - g. diagram and locate the Р 400 Kpa a by 0.3 m³ Fig (1)
A tank contains Helium for which R = 382 ft.lbf/lb.-R and k = 1.66, is heated from 85°Fto a final temperature of 190°F in an unknown process. Find the value of cpA. 1.235 Btu/lb-R B. 1.335 Btu/lb-R C. 1.435 Btu/lb-R D. 1.535 Btu/lb-R
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1 - Consider 2 kg of water in a cylinder blocked by a piston at 20 C, 200 kPa. Water is heated and piston starts to rise. When the piston reaches the blocks, the volume of water has doubled. Heating continues until the pressure also doubles. Calculate the work done by water and the amount of heattransfer. Consider the case that the piston is restricted by the linear spring. Initially the spring is at rest. Water is heated until the piston reaches the blocks. Just before it hits the blocks the pressure is twice the initial pressure. Calculate the work done by water and the amount of heat transfer by the time the piston reaches the blocks. 7 D H₂0
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