5) Air at standard conditions is compressed from 7 m to 1 m isothermally. What is...
Air is compressed isothermally from 13 psia and 55°F to 74 psia in a reversible steadyflow device. Calculate the work required. In Btu/bm, for this compression. The gas constant of air is R=0.06855 Btu/ibm-R. The work required for this compression is Btu/ibm
A compressed-air tank holds 0.470 m^3 of air at a temperature of 283 K and a pressure of 900 kPa . What volume would the air occupy if it were released into the atmosphere, where the pressure is 101 kPa and the temperature is 305 K ?
Review of air at a temperature of A compressed-air tank holds 0.490 m 281 K and a pressure of 900 kPa. Part A What volume would the air occupy if it were released into the atmosphere, where the pressure is 101 kPa and the temperature is 305 K? 180 AEC O O ? v- [ Submit Request Answer
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given by pı = 20 MPa, T = 1000 K. the process continues until the pressure drops to 2 MPa. The original volume of the air is V1 = 1 m². Determine the following: a. the mass of the air in the system, in kg. b. the final density of the air, in kg/m". Remember, Rair = 0.287 kJ/kg-K c. the final volume of the...
18) Nitrogen (MW-48) is isothermally compressed from 200°F and 40 psia to 100 psia. Calculate the final specific volume, the change in entropy and the heat transferred in the process. 8) A steel collar is press fitted onto a steel shaft. The modulus of elasticity of steel-36 x 106 Ib/in2. The collar has an internal diameter- 2.498 in, and the shaft has an outside diameter -2.500 in. The outside diameter of the collar = 4.000 in. (a) Determine the radial...
A flexible air supply hose is connected to a compressed air tank as shown in the figure. The hose is 5 m long and has an internal diameter of 10 mm. At its free end the hose discharges to the atmosphere. The air leaves the hose at sonic velocity (M = 1), with p = 100 kPa and T = 273 K. The friction coefficient C (the same as f in the Anderson text books) within the hose is 0.0227...
PROBLEM 1Air undergoes two processes in series:Process 1-2: Polytropic compression, with n = 1.3, from p1 = 110 kPa, V1 = 0.5 m3 to V2 = .1 m3Process 2-3: Constant pressure process to V3 = V1Determine the work done in each process and comment on the direction of work. Then, determine the net work from Process 1 - 3. (You may assume air to behave as ideal gas throughout process)PROBLEM 2 Air is compressed isothermally in a piston cylinder. If the initial...
Propane gas at 100°C is compressed isothermally from an initial pressure of 1 bar to a final pressure of 10 bar. Estimate ?H and ?S using PITZER CORRELATIONS.
(10 pts) Air is compressed from 5.3 L, 7°C and 98 kPa to 0.65 L inside a piston-cylinder device. The compression is reversible and adiabatic. Rair 0.287 k]/kg.K. Using variable specific heat analysis, determine: 1. a. b. c. The temperature after compression, in K. The pressure after compression, in kPa. The work done on the system, in k].
7.24 A pump is used to pressurize air in a tank to 300 kPa abs. e tank has a diameter of 2 m and a height of 4 m. The initial level of water in the tank is 1 m, and the initial pressure at the tank water surface is 0 kPa gage. The atmospheric pressure is 100 kPa. The pump provides a constant head of 50 m. The water is drawn from a reservoir that is 4 m below...