A cylinder that contains 0.068 kg of carbon dioxide (with molar mass 44 kg/kmol), occupying a volume of 0.027 m³ at 0.9 bar is compressed reversibly until the pressure is 6.33 bar. If the molar (universal) gas constant as 8.3145 kJ/kmol K, calculate the final temperature (in C) when the process is isothermal.
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- Problem A gas weighs 16 N/m³ at 25°C and at an absolute pressure of 0.25 N/mm². Deter- mine the gas constant and density of the gas.1. If the work done 10000 cal, and the initial pressure 100 atm, when the ideal gas | expand isothermally and reversibly from the initial l volume (V1) to the final volume (10 V1), R = 1.987 cal/mole.K. ~ (A) calculate V1. (B) If there are - 2 moles from ideal gas what is the temperature.Problem 13.84 The converging nozzle has an exit diameter of 0.25 m. The fuel-oxidizer mixture within the large tank has an absolute pressure of 4 MPa and temperature of 2100 K. The mixture has k = 1.38 and R = 296 J/[kg-K]. (Figure 1) Figure 0.25 m 1 of 1 Part A Determine the mass flow from the nozzle when the backpressure is a vacuum. Express your answer using three significant figures. IVE ΑΣΦ m = Submit Provide Feedback Request Answer vec ? kg/s
- One pound of an ideal gas undergoes and isentropic process from 95.3 psig and a volume of 0.6 ft³ to a final volume of 3.6 ft3. If Cp = 0.124 BTU/lbm-°R and Cy = 0.093 BTU/lbm-°R, determine: 1. Final temperature in °F 2. Final pressure in psia 3. Change in enthalpy in BTU 4. Work in BTUA 10-kg mass of superheated refrigerant-134a at 1.2 MPa and 70°C is cooled at constant pressure until it exists as a compressed liquid at 20°C. (a) Show the process on a T-v diagram with respect to saturation lines. (b) Determine the change in volume. (c) Find the change in total internal energy.Prob1- 30% Consider a steam turbine power plant operating near critical pressure, as shown in Fig. below. As a first approximation, it may be assumed that the turbine and the pump processes are reversible and adiabatic. Turbine actual exit state is saturated vapor. Neglecting any changes in kinetic and potential energies, calculate 1. Isentropic Turbine efficiency? 2. The Pump work input and enthalpy at pump exit state? 3. The thermal efficiency of cycle? T1=700 C; P1=P4=15 MPa ; P2=P3=20 KPa; in 3
- - A certain gas a value of R = .18896 KJ/kg°K and K = 1.288. Calculate the value of Cp and Cv. %3D..............Wh@t is the equivalent head of kerosene (s=.9) annd mercury( s=14.2). For a 4m head of water.......4.15 A gas-condensate reservoir has an areal extent of 200 acres, an average thickness of 15 ft, an average porosity of 0.18, and an initial water saturation of 0.23. A PVT cell is used to simulate the production from the reservoir, and the following data are collected: Condensate Produced from Separator (moles) Wet Gas Pressure Produced (psia) (cc) Wet Gas 4000 (dew point) 3700 3300 0. 0.75 400 0.77 0.0003 450 0.81 0.0002 The initial cell volume was 1850 cc, and the initial gas contained 0.002 moles of condensate. The initial préssure is 4000 psia, and the reservoir temperature is 200°F. Calculate the amount of dry gas (SCF) and condensate (STB) recovered at 3300 psia from the reservoir. The molecular weight and specific gravity of the condensate are 145 and 0.8, respectively.
- Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 570°R and 150 ft/s, respectively. At the exit, the temperature is 460°R and the pressure is 40 lb/in². The area of the exit is 0.0085 ft². Use the ideal gas model with k = 1.67, and neglect potential energy effects. Determine the velocity at the exit, in ft/s, and the mass flow rate, in lb/s.1. Oil that has a density of 880 kg/m3 flows under a head of 30 m. The pipe that the oil flows through is 3000 m long and 0.35 m in diameter. Due to the cooling along the span of the pipe the viscosity changes, this may be taken as 0.57 kg/m-s over the first 1500 m and 1.14 kg/m-s over the second 1500 m. Confirm that laminar flow conditions exist and calculate the flow in dm/s. Neglect entry and exit losses. Answer 37.185 dm'/s3. Carbon dioxide enters an adiabatic compressor at 100 kPa and 300 K at a rate of 0.5 kg/s and leaves at 600 kPa and 450 K. Neglecting kinetic energy changes, determine (a) the volume flow rate of the carbon dioxide at the compressor inlet and (b) the power input to the compressor.