Need Correct Solution. 10. An unknown gas is originally ata state Pi = 60 psia and V = 3ft andis expanded to a pressure P2 0 psia and V2 7.5 f'. If the internal energy of the gas decreases duringthe process by 35 Btu, find R. Furthermore, if c, .35.find c,.%3D%3D

Answered: Image /qna-images/answer/f1e9d8a6-54d6-4505-af08-27fc03604e25.jpg

10. An unknown gas is originally at a state P, = 60 psia and V = 3ft' and is expanded to a pressure P2 0 psia and V2 7.5 ft'. If the internal energy of the the process by 35 Btu, find R. Furthermore, if c, .35.find c. %3D decreases during %D gas

10. An unknown gas is originally at a state P, = 60 psia and V = 3ft' and is expanded to a pressure P2 0 psia and V2 7.5 ft'. If the internal energy of the the process by 35 Btu, find R. Furthermore, if c, .35.find c. %3D decreases during %D gas

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

Show the COMPLETE SOLUTIONS including the derivation of formula and Interpolations/extrapolations:NO Calculator Technique and Applications. 3. Your steam has a Data of 5.25 MPa and 395 C. Find v, u, h and s. 4. Your steam has a data of 4300 KPag and 362 C, Find v, u, h and s.
Q7) A piston/cylinder contains water at 500°C, 3 MPa. It is cooled in a polytropic process to 200°C, 1 MPa. Find the polytropic exponent and the work done in the process. [1.919, 155.2 kJ]
Q1: a) If for a given gas (Ou/ov)0, find u, the specific internal energy if c, is constant. b) If the equation of state for the gas in part (a) is given by v-(RT/p) = a, find c,- c, for that gas. c) Show that (@h/op)r=-C, (@T/ôp)n.
2. Water as saturated vapor at 70 bar is heated at in a rigid vessel until its pressure reaches 100 bar. By using steam table, a. find the final T (°C), Au and Ah (kJ/kg) b. assuming an ideal gas, calculate Ah (kJ/kg) do the energy balance to find q (kJ/kg)? 3. Determine the internal energy change of hydrogen in kJ/kg as it heated from 76.85 °C to 526.85°C by using: a. empirical molar specific heat data from Table A-2(c) b. specific heat at the average temperature from Table A-2(b). C. the 300 K value for the specific heat from Table A-2(a).
A gas has a volume of 3.4L at 25 degC, what is the final temperature (in Rankine) if the volume increases to 4.7L?
Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 142 L of air at 2,767.92 kPa, 93.330C. Vessel B, of unknown volume, contains air at 68.95 kPa, 4.440C. The valve is opened and, when the properties have been determined, it is found that pm = 1378.96 kPa, tm = 43.330C. What is the volume of vessel B?
3.40 Give the phase and the missing property of P, T, v, and x. а. R-134a, T — -20°С, Р %3D 150 kPa b. R-134a, P — 300 kРа, v 3 0.072 m/kg c. CH4, T= 155 K, v = 0.04 m/kg d. CH4, T = 350 K, v = 0.25 m/kg 3.41 A sealed rigid vessel has volume of 1 m' and con- tains 2 kg of water at 100°C. The vessel is now heated. If a safety pressure valve is installed, at what pressure should the valve be set to have a maximum temperature of 200°C? 3.42 Saturated liquid water at 60°C is put under pressure /to decrease the volume by 1% while keeping the temperature constant. To what pressure should it be compressed? 3.43 Saturated water vapor at 200 kPa is in a cons ww. pressure piston/cylinder assembly. At this state the piston is 0.1 m from the cylinder bottom. How much is this distance if the temperature is changed to a. 200°C b. 100°C. 3.44 You want a pot of water to boil at 105°C. How heavy a lid should you put on the 15-cm-diameter pot when P, 101 kPa? atm
4.19 A balloon behaves such that the pressure inside is proportional to the diameter squared. It contains 2 kg of ammonia at 0°C, 60% quality. The balloon and ammo- nia are now heated so that a final pressure of 600 kPa is reached. Considering the ammonia as a control mass, find the amount of work done in the process.
(5) Consider a gas that follows the equation of state NRT aN? p = V – bN V2 | 8a This is called van der Waals gas (a,b > 0). For temperatures T > Tc = p(V) is a 27RB monotonic decreasing function. Assume T > Tc and Cy = 3NR/2. Consider an insulated box with volume V, . The box was divided by a wall. One of the compartments had volume Vo at temperature To, filled with van der Waals gas of amount N, and the other was vacuum. The system was in equilibrium. (a) The wall was removed abruptly. The gas expanded and occupied the entire box. This process is called adiabatic free expansion. The temperature in the box is now T, in equilibrium. What is T, – T,? (b) The internal energy of the gas does not change by adiabatic free expansion. Why? (c) Instead of the abrupt removal, the wall was moved through adiabatic and quasi-static process, and the gas expanded to the entire volume of the box. The temperature in the box is now T, in equilibrium. What is T2? (d) Show T, > T2, using the arguments of…
Show the COMPLETE SOLUTIONS including the derivation of formula and interpolations/extrapolations:NO Calculator Technique and Applications. 4. Your steam has a data of 4300 KPag and 362 C, Find v, u, h and s.
3.52 WP A piston-cylinder assembly contains 1kg of water, ini- tially at 700 kPa in series: a constant-pressure process followed by a constant-volume process. At the end of the constant-volume process, the temperature is 150°C and the water is a two-phase liquid-vapor mixture with a quality of 60%. Neglect kinetic and potential energy effects. and 200°C. The water undergoes two processes a. Sketch T-v and p-v diagrams showing the key states and the processes. b. Determine the work and heat transfer for each process, all in Btu.
1%VT l. li. @ 47 1:10 KB/s IЕC2.pdf 12 MSc.Saif Saiwan Chapter 2 BETC Problem to solve by yourself 1) Given a vessel with V = 0.4 m3 filled with m = 2 kg of H2O at P = 600 kPa, find • the volume and mass of liquid, and • the volume and mass of vapor. 2) Given water at T = 36.7 •C, with v = 10 m3/kg, find the pressure and the quality if a two-phase mixture. 3) A closed, rigid container of volume 0.5 m3 is placed on a hot plate. Initially, the container holds a two- phase mixture of saturated liquid water and saturated water vapor at pi = 1 bar with a quality of 0.5. After heating, the pressure in the container is Pi 1.5 bar, determine (a) the temperature, in _C, at each state. (b) the of vapor present at each state, in kg. mass Assuming the volume of the container remains constant. 13