A2 m tank initially contains air at 100 kPa and 25 °C. The tank is connected to a supply line at 600 kPa and 25 °C. The valve is opened and air is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. A thermometer placed in the tank indicates that theair temperature at the final state is 65 °C. Treat air as a perfect gas.Supply lineAirPart ADetermine the mass of air that has entered the tank.Express your answer to four significant figures and include appropriate units.HẢ?ValueUnitsSubmitRequest AnswerPart BDetermine the heat transfer (Q.Express your answer to four significant figures and include appropriate units.HẢ?ValueUnitsSubmitRequest Answer

Answered: Image /qna-images/answer/9303c68e-3aeb-4097-8baa-5f3c88cacccf.jpg

Answered: A2 m tank initially contains air at 100…

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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Air is compressed isentropically (PV^1.4 = c) to twice its pressure. If the initial temperature is 300K, determine the change in specific
Saturated liquid water at 100 kPa enters a well-insulated pump and exits at 4 MPa. Assume that the inlet and outlet temperatures are the same. How much work, in kJ/kg, is required? Report your answer to two decimal places using rounding.
Consider a sealed can that is filled with refrigerant134a. The contents of the can are at the room temperature of 25°C. Now a leak develops, and the pressure in the can drops to the local atmospheric pressure of 90 kPa. The temperature of the refrigerant in the can is expected to drop to (rounded to the nearest integer) (a) 0°C (b) –29°C (c) 16°C (d) 5°C (e) 25°C
A 2-m3 rigid tank initially contains air at 100 kPa and 22°C. The tank is connected to a supply line through a valve. Air is flowing in the supply line at 600 kPa and 22°C. The valve is opened, and air is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. A thermometer placed in the tank indicates that the air temperature at the final state is 77°C. Determine the mass of air that has entered the tank.
23. A 5.2m3 tank contains nitrogen, which is evacuated from 100kPag to a pressure of 98kPagvacuum. Determine the mass of pumped out nitrogen if initially the temperature is 510K and thefinal temperature is 100K.a. 6.3274kg b. 5.8802kg c. 6.4656kg d. 6.2169kg
5. The two tanks (Tank A and Tank B) are connected by a valved tube. Initially, the valve is closed. Tank A contains 1 MPa, 1.5 kg of water vapor at 350°C, and tank B contains 3 kg of saturated water at 150°C and dryness x=0.5. The valve was opened and the water vapor moved and finally the pressure in the two tanks was equal to 300 kPa. Answer the following questions. (1) Calculate the volumes of tank A and tank B, respectively. (2) Calculate the final temperature and dryness (in case of saturation). (3) Find the amount of heat transfer during this process.
5. The two tanks (Tank A and Tank B) are connected by a valved tube. Initially, the valve is closed. Tank A contains 1 MPa, 1.5 kg of water vapor at 350°C, and tank B contains 3 kg of saturated water with 150 * C and dryness x=0.5. The valve was opened and the water vapor moved and finally the pressure in the two tanks was equal to 300 kPa. Answer the following questions. (1) Calculate the volumes of tank A and tank B, respectively. (2) Calculate the final temperature and dryness (in case of saturation).
Air is compressed by a 15-kW compressor from pressure P1 to pressure P2.The air temperature is maintained constant at 25°C during the process as a result of heattransfer to the surrounding medium at 20°C. Determine (a) the amount of heat per unittime in kW rejected to the environment, and (b) the rate of entropy change of the air.State all key assumptions.
Air at an initial state of 100 kpa and 17 degree Celsius is compressed to a final state of 600 kpa and 57 degree Celsius. Sketch the T-s diagram and determine the entropy changes of this process using property values from air tables for exact analysis.
Question Three Air flows steadily adiabatically through a pipe with a constant cross-sectional area. Air is fed into the pipe through an isentropic converging nozzle from a large tank where the pressure and temperature are 900 kPa and 300 K, respectively, as shown in the figure below. The pressure at the inlet of the duct is 750 kPa. If the temperature at the duct exit is 275 K, determine the pressure at the duct exit. Ans. pe = 568.7 KPa
Propane initially at 300 K and 100 kPa is is compressed to 1 MPa in a reversible, steady-flow, and compressor. Determine the amount of work in kJ/kg if the process is isentropic. Round your answer to one decimal place
Note: Draw the P-V, T-S diagrams for all problems Air is compressed polytropically so that the quantity PV1.4 is constant. If 0.02 m3 of air at atmospheric pressure of 101.3 KPA and 4C are compressed to a gage pressure of 405KPAg, determine the final temperature of air in C.

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