The work required to compress a gas reversibly according to PV1.30 = C is 67,790 J if there is no flow. Determine: Change in internal energy in kJ if the gas is air Heat in kJ if the gas is air Change in internal energy in kJ if the gas is methane Heat in kJ if the gas is methane NOTE: For methane, k = 1.321, R = 518.45 J/kgm-K, Cv = 1.6187 kJ/kgm-K, Cp = 2.1377 kJ/kgm-K.

Q: ands polytropically through a gas turbine according to the process PV^1.42 = C. If the turbine…

A: Given:PV1.42=CW=27.04 MW

Q: Steam enters a turbine operating at steady state at 800°F and 450 Ibf/in? and leaves as a saturated…

A:

Q: Air is compressed in a piston-cylinder assembly from p₁ = 25 lb/in², T₁ = 500°R, V₁ = 9 ft³ to a…

A:

Q: A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.² and 600°F. The water…

A:

Q: During a steady flow process, the pressure of the working substance drops from 200 to 20 psia, the…

A: P1=200psiaSpeed, v1=200 ft/secSpecific volume,v1=2 ft3/lb∆u=-20 BTU/lbm=15 lb/min…

Q: Liquid-vapor mixture of ammonia, initially at x = 60% and a pressure of 1 MPa, is contained in a…

A: Given: Dryness fraction of the mixture of ammonia: x=60%=0.60 Mass of the ammonia→m=2 Kg From the…

Q: Helium expands polytropically through a gas turbine according to the process PV1.42 = C. If the…

A:

Q: Steam enters a turbine operating at steady state at 800°F and 450 Ibf/in? and leaves as a saturated…

A:

Q: One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lb/in², T₁ = 500°R to p2 = 150…

A:

Q: A fluid at 0.6 bar occupying 0.07 m is compressed reversibly to a pressure of 10.2 bar and specific…

A:

Q: One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in?, T1 = 500°R to p2 =…

A:

Q: The relation Δu = cv ΔT is valid for any kind of process, constant-volume or not.

A: Given data: *The initial temperature of the first system is T1i=20°. *The final temperature of the…

Q: Krypton in a closed system is compressed adiabatically from 94 K and 1 bar to a final pressure of 24…

A: Given: initial temperature→T1=94 K Initial pressure→P1=1 bar Final pressure→P2=24 bar Krypton is…

Q: 250 degrees saturated steam enters a steam coil. The steam is condensed in the coil, leaving as a…

A:

Q: Q1: 0.09 m³ of a fluid at 0.7 bar are compressed reversibly to a pressure of 3.5 bar according to a…

A: Assumption: Considering that the fluid to be Ideal gas. Given: A cyclic process 1-2-3-1: The…

Q: In an industrial process 0.4 kg of oxygen is compressed according to PV^n =C, where n = 1, from 1.01…

A:

Q: When a system undergoes a Isochoric process (P = 5 bar), the change in internal internal is 5 kJ and…

A: Isochoric Process: the process in which the volume of the process is constant throughout the process…

Q: Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated…

A:

Q: Determine T2, in oR, and the change in entropy, in Btu/oR.

A: Given: n = 1/4 (quarter lb-mol) P1 = 20 lbf/in2 T1 = 500 oR W = -500 BTU Q = -240 BTU It is required…

Q: 8. A stationary mass of gas is compressed without friction from an initial state of 0.3 m³ and 1.05…

A: The work done during the process can be determined as shown below.   Here, a negative sign…

Q: Air expands at constant pressure from 100 KPa, 0.03 m3 to 0.06 m3 with 80 kJ negative heat transfer.…

A:

Q: One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in?, T1 = 500°R to p2 =…

A: Givenp1=20lbf/in2T1=500°Rp2=150lbf/in2W=-500BtuQ=-127.5BtuNo. of moles of oxygen gas…

Q: Air is compressed in a piston-cylinder assembly from p₁=10 lb/in², T₁ = 500°R, V₁ = 9 ft³ to a final…

A:

Q: 3. The closed piston-cylinder assembly shown contains Ammonia. The piston moves between two sets of…

A:

Q: When a system undergoes a Isochoric process (P = 5 bar), the change in internal internal is 5 kJ and…

A: First Law of thermodynamics: The first law of thermodynamics states that "Energy can never be…

Q: A fluid at 0.5 bar occupying 0.08 m3 is compressed reversibly to a pressure of 9.8 bar and specific…

A:

Q: There exists reduction of 1 pound of steam per minute undergoing an isothermal process from 27.5…

A: Given- mass flow rate (m) = 1 pound/minute = 0.01667 pound/sec  (m) = 0.00756 kg/s Change in kinetic…

Q: Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated…

A:

Q: One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lb/in². T₁ = 500°R to p₂ = 150…

A:

Q: If an ideal gas undergoes a process where the change in enthalpy (Δh) is 424 kJ/kg, and the change…

A:

Q: Argon (molar mass 40 kg/kmol) compresses reversibly in an adiabatic system from 5 bar, 25 0C to a…

A:

Q: The Preliminary audit taken by an energy manager indicates that the daily energy consumption per…

A: Given that production output =150000 units

Q: A fluid at 0.6 bar occupying 0.1 m is compressed reversibly to a pressure of 11.1 bar and specific…

A:

Q: Helium expands polytropically through a gas turbine according to the process PV^1.484 = C. If the…

A:

Q: 7: The heat transfer explicitly for the reversible steady flow process 1-2-3-4-5-3 is shown in the…

A:

Q: One-quarter lbmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in2, T1 = 500oR to p2 =…

A: Solution:- Given data :- p1 = 20 lbf/in2                     p2 = 150 lbf/in2                     T1…

Q: A fluid expands reversibly according to a linear law from 3.8 bar to 1.1 bar, the initial volume is…

A:

Q: 0.06m of fluid at 0.6bar is compressed in a polytropic process to a pressure of 3.5bar. The fluid is…

A: Given Data Initial pressure is: P1=0.6 bar Initial volume is: V1=0.06 m3 Pressure at point 2 is:…

Q: Helium expands polytropically through a gas turbine according to the process PV^1.327=C. If the…

A: For solution refer below images.

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.