A tank contains 5 m3 of hydrogen at 400K is evacuated from atmospheric pressure to a final pressure of 2.5 kPa. Determine
(a) The mass of hydrogen remains in the tank.
(b) The mass of hydrogen pumped out.
(c) Pressure of the remaining hydrogen if the temperature is reduced to 10oC
A tank contains 5 m3 of hydrogen at 400K is evacuated from atmospheric pressure to a...
5.3 A 6-m3 tank contains helium at 400oK and is evacuated from atmospheric pressure to a pressure of 740 mmHg vacuum. Determine (a) the mass of helium remaining in thetank; (b) the mass of helium pumped out. (c) The temperature of the remaining helium falls to 10oC. What is the pressure in kPa?
An adiabatic tank, 0.5 m3, is initially evacuated and charged with steam at 500 kPa and 300 C. The final tank pressure is 500 kPa. Determine the final temperature and the entropy production. Answers: 461.5 C, 0.379
Problem 5 A rigid tank of 2m contains pure nitrogen gas at 800kPa and 400K. A mass of 1.8kg is removed from the tank. The final temperature is 375K. What is the final pressure? Problem 6 A glass is cleaned in hot water and reaches a temperature of 50°C. The glass is placed on a table bottom up. The room temperature air trapped in the glass heats up to 45°C, and some of the air escapes, so that the resulting...
J - ME 311011-Thermodynamics My courses / 2019 Summer - ME 311011/ June 3 - June 9/ Homework 5 A 3-m3 rigid tank contains hydrogen at 250 kPa and 550 K. The gas is now cooled until its temperature drops to 350 K. Treat hydrogen specific heat at 450 K determine ston 4 s remaining as an ideal gas. Using the arked out of kPa (a) the final pressure in the tank 00 P Flag question kJ (b) the amount...
A balloon whose volume is 770 m3 is to be filled with hydrogen at atmospheric pressure (1.01×105Pa).If the hydrogen is stored in cylinders with volumes of 1.75 m3 at a gauge pressure of 1.17×106 Pa , how many cylinders are required? Assume that the temperature of the hydrogen remains constant.
A rigid tank with a volume of 0.117 m3 contains 1 kg of R134a vapor at 240 kPa. Determine the initial pressure and final temperature.
An insulated 1.7 m3 rigid tank contains air at 500 kPa and 50oC. A valve connected to the tank is now opened and air is allowed to escape until the pressure inside drops to 200 kPa. The air temperature during this process is maintained constant by an electric resistance heater placed in the tank. a. Determine the mass of air initially, m1 in kg. b. How much air escaped from the tank, mout in kg. c. Determine the electrical work...
A 2.2-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...
Pressure in tank = 2320 kPaQuality of saturated mixture = 0.0269A 9.8 m3 rigid tank contains steam at 220°C. One-third of the volume is in the liquid phase and the rest is in the vapor form. Determine the density of the mixture. (Round the final answer to one decimal place.) (You must provide an answer before moving on to the next part.) The saturated water-temperature table (in Sl units) is given below.The density of the mixture is _______ kg/m3
A 0.6 m3 rigid tank initially contains refrigerant-134a in saturated vapor form at 0.9 MPa . As a result of heat transfer from the refrigerant, the pressure drops to 240 kPa. Use TESTCalc to answer the following questions. a) Determine the final temperature (T2). b) Determine the amount of refrigerant that condenses. c) Determine the heat transfer (Q).