Chapter 6, Problem 6.32P

Using the rogers and Mayhew's table can you solve this as I'm struggling.

Carbon dioxide (molar mass 44 kg/kmol) expands rever sibly in a perfectly thermally insulated cylinder from 3.7 bar, 220 °C to a volume of 0.085 m'. If the initial volume occupied was 0.02 m', calculate the gas constant, adiabatic index, final pressure and work input. Assume nitrogen to be a perfect gas and take cv = 0.63 k J /kg K. Assessor's Signature Moderator's Signature

4.13 0.06 m' of ethane (molar mass 30 kg/kmol), at 6.9 bar and 260°C, is allowed to expand isentropically in a cylinder behind a piston to a pressure of 1.05 bar and a temperature of 107°C. Calculate 7, R, c,, c,. for ethane, and calculate the work donc during the expansion. Assume ethane to be a perfect gas. The same mass of ethane at 1.05 bar, 107°C, is compressed to 6.9 bar according to a law pr1. = constant. Calculate the final temperature of the ethane and the heat flow to or from the cylinder walls during the compression. Calculate also the change of entropy during the compression, and sketch both processes on a p-r and a T-s diagram. (1.219; 0.277 kJ/kg K; 1.542 kJ/kg K; 1.265 kJ/kg K; 54.2 kJ; 377.7°C; 43.4 kJ; 0.0862 kJ/K)

1- Steam initially at (15 bar, 300 C) expands reversibly and adiabatically in a steam turbine to (40 C°). Determine the ideal work output of the turbine per kg of steam and find the dryness fraction at the turbine exit. [Ans. 90 kj/kg, 0.825]

Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated cylinder from 3.7 bar, 220 0C to a volume of 0.085 m3. If the initial volume occupied was 0.02 m3, calculate the gas constant, adiabatic index, final pressure and work input. Assume nitrogen to be a perfect gas and take cv = 0.63 k J / k g K.

One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 Ib/in?, T1 = 500°R to p2 = 150 lb;/in?. For the process W = -500 Btu and Q = -127.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/°R. Step 1 Determine T2, in °R. T2 = °R Save for Later Attempts: 0 of 1 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.

Problem 4: An engine operating on an ideal Diesel cycle has a cylinder volume when the piston is at bottom-dead-center (BDC), V₁ 1 liter = 0.001 m³. The intake pressure and temperature are P₁ = 300 K. The engine cycle contains the following processes: 100 kPa and T₁ = Adiabatic compression to V₁/24. Constant pressure heating to V₁/14. =

One mole of a monatomic ideal gas undergoes a cycle that has four steps. At point 1 it starts at a pressure of 3 × 105 Pa and a volume of 20 × 10-3 m3 It undergoes an isothermal expansion to point 2 to a new volume at of 8.0 × 10-3 m?. It then undergoes an isochoric process to point 3 until its pressure is half as much of what it was at point 2. It then goes through an isothermal compression to point 4 to a volume of 20 mL. It returns to point 1 via an isochoric step. What is the temperature of the gas at point 1? How much work is done by the gas in step 1 to 2? What is the pressure of the gas at point 2? What is the total work done by the gas in the entire cycle? A monatomic ideal gas (y = 5/3) is contained within a perfectly insulated cylinder that
is fitted with a movable piston. The initial pressure of the gas is 1.5 x 105 Pa. The piston is pushed so as to compress the gas, with the result that the Kelvin temperature doubles. What is the final pressure of the gas? a. 4.91 ×…

A closed frictionless piston-cylinder device contains 0.365 kmol of an ideal gas known as Minesium (MW=38.0 g/mol, C, = 4R). The device undergoes a three-state, three process cycle. Initially the gas is at 205 °C and 350.0 kPa (State 1). It is isothermally compressed to a pressure of 550.0 kPa (State 2). From State 2, the pressure in the piston-cylinder device is reduced to 350.0 kPa via an isochoric process (State 3). Finally, the gas is expanded isobarically to the initial State 1 conditions. What is the work from State 1 to State 2, W12? kJ What is the work from State 2 to State 3, W23? kJ What is the work from State 3 to State 1, W31? kJ What is the total heat for this three step cycle, Qtot? kJ