THERMODYNAMICS (LL)-W/ACCESS >CUSTOM<
9th Edition
ISBN: 9781266657610
Author: CENGEL
Publisher: MCG CUSTOM
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Chapter 12.6, Problem 61P
To determine
The Joule-Thomson coefficient of the refrigerant-134a at
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Estimate the Joule-Thomson coefficient for steam at 3MPA and 300°C
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Using gure A-14E (or A-14) in the tables of your book, is the Joule-Thomson
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4) A sample of argon at 01 atm pressure and
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capacity of argon at constant volume is 12.48
JK-1mol-1.
A frictionless piston-cylinder contains 42 kilograms of Acetylene having a pressure of 22 bar at 320 degrees Celsius. Heating occurs at constant pressure causing the piston to move until the volume is tripled. Compute for the (a) heat, (b) change in internal energy, (c) change in enthalpy (d) change in entropy, and (e) the non-flow work. (f) If ΔPE = 0.2 kJ and ΔKE = 1.35 kJ, what is the steady-flow work?
Chapter 12 Solutions
THERMODYNAMICS (LL)-W/ACCESS >CUSTOM<
Ch. 12.6 - What is the difference between partial...Ch. 12.6 - Consider the function z(x, y). Plot a differential...Ch. 12.6 - Consider a function z(x, y) and its partial...Ch. 12.6 - Prob. 4PCh. 12.6 - Prob. 5PCh. 12.6 - Consider a function f(x) and its derivative df/dx....Ch. 12.6 - Conside the function z(x, y), its partial...Ch. 12.6 - Consider air at 350 K and 0.75 m3/kg. Using Eq....Ch. 12.6 - Consider air at 350 K and 0.75 m3/kg. Using Eq....Ch. 12.6 - Nitrogen gas at 800 R and 50 psia behaves as an...
Ch. 12.6 - Consider an ideal gas at 400 K and 100 kPa. As a...Ch. 12.6 - Using the equation of state P(v a) = RT, verify...Ch. 12.6 - Prove for an ideal gas that (a) the P = constant...Ch. 12.6 - Verify the validity of the last Maxwell relation...Ch. 12.6 - Verify the validity of the last Maxwell relation...Ch. 12.6 - Show how you would evaluate T, v, u, a, and g from...Ch. 12.6 - Prob. 18PCh. 12.6 - Prob. 19PCh. 12.6 - Prob. 20PCh. 12.6 - Prove that (PT)=kk1(PT)v.Ch. 12.6 - Prob. 22PCh. 12.6 - Prob. 23PCh. 12.6 - Using the Clapeyron equation, estimate the...Ch. 12.6 - Prob. 26PCh. 12.6 - Determine the hfg of refrigerant-134a at 10F on...Ch. 12.6 - Prob. 28PCh. 12.6 - Prob. 29PCh. 12.6 - Two grams of a saturated liquid are converted to a...Ch. 12.6 - Prob. 31PCh. 12.6 - Prob. 32PCh. 12.6 - Prob. 33PCh. 12.6 - Prob. 34PCh. 12.6 - Prob. 35PCh. 12.6 - Prob. 36PCh. 12.6 - Determine the change in the internal energy of...Ch. 12.6 - Prob. 38PCh. 12.6 - Determine the change in the entropy of helium, in...Ch. 12.6 - Prob. 40PCh. 12.6 - Estimate the specific heat difference cp cv for...Ch. 12.6 - Derive expressions for (a) u, (b) h, and (c) s for...Ch. 12.6 - Derive an expression for the specific heat...Ch. 12.6 - Derive an expression for the specific heat...Ch. 12.6 - Derive an expression for the isothermal...Ch. 12.6 - Prob. 46PCh. 12.6 - Show that cpcv=T(PT)V(VT)P.Ch. 12.6 - Show that the enthalpy of an ideal gas is a...Ch. 12.6 - Prob. 49PCh. 12.6 - Show that = ( P/ T)v.Ch. 12.6 - Prob. 51PCh. 12.6 - Prob. 52PCh. 12.6 - Prob. 53PCh. 12.6 - Prob. 54PCh. 12.6 - Prob. 55PCh. 12.6 - Does the Joule-Thomson coefficient of a substance...Ch. 12.6 - The pressure of a fluid always decreases during an...Ch. 12.6 - Will the temperature of helium change if it is...Ch. 12.6 - Estimate the Joule-Thomson coefficient of...Ch. 12.6 - Estimate the Joule-Thomson coefficient of...Ch. 12.6 - Prob. 61PCh. 12.6 - Steam is throttled slightly from 1 MPa and 300C....Ch. 12.6 - What is the most general equation of state for...Ch. 12.6 - Prob. 64PCh. 12.6 - Consider a gas whose equation of state is P(v a)...Ch. 12.6 - Prob. 66PCh. 12.6 - What is the enthalpy departure?Ch. 12.6 - On the generalized enthalpy departure chart, the...Ch. 12.6 - Why is the generalized enthalpy departure chart...Ch. 12.6 - What is the error involved in the (a) enthalpy and...Ch. 12.6 - Prob. 71PCh. 12.6 - Saturated water vapor at 300C is expanded while...Ch. 12.6 - Determine the enthalpy change and the entropy...Ch. 12.6 - Prob. 74PCh. 12.6 - Prob. 75PCh. 12.6 - Prob. 77PCh. 12.6 - Propane is compressed isothermally by a...Ch. 12.6 - Prob. 81PCh. 12.6 - Prob. 82RPCh. 12.6 - Starting with the relation dh = T ds + vdP, show...Ch. 12.6 - Using the cyclic relation and the first Maxwell...Ch. 12.6 - For ideal gases, the development of the...Ch. 12.6 - Show that cv=T(vT)s(PT)vandcp=T(PT)s(vT)PCh. 12.6 - Temperature and pressure may be defined as...Ch. 12.6 - For a homogeneous (single-phase) simple pure...Ch. 12.6 - For a homogeneous (single-phase) simple pure...Ch. 12.6 - Prob. 90RPCh. 12.6 - Prob. 91RPCh. 12.6 - Estimate the cpof nitrogen at 300 kPa and 400 K,...Ch. 12.6 - Prob. 93RPCh. 12.6 - Prob. 94RPCh. 12.6 - Prob. 95RPCh. 12.6 - Methane is to be adiabatically and reversibly...Ch. 12.6 - Prob. 97RPCh. 12.6 - Prob. 98RPCh. 12.6 - Prob. 99RPCh. 12.6 - An adiabatic 0.2-m3 storage tank that is initially...Ch. 12.6 - Prob. 102FEPCh. 12.6 - Consider the liquidvapor saturation curve of a...Ch. 12.6 - For a gas whose equation of state is P(v b) = RT,...Ch. 12.6 - Prob. 105FEPCh. 12.6 - Prob. 106FEP
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- Express the Joule coefficient and the Joule – Thomson coefficient as its value for an ideal gas.arrow_forwardEstimate the Joule-Thomson coefficient of refrigerant-134a at 240 kPa and 20°C. Assume the second state will be selected for a pressure of 200 kPa. Use data from the tables. The Joule-Thomson coefficient of refrigerant-134a is K/kPa.arrow_forward2.6 kg of Steam at 500 kPa and 4000C was cooled in a piston cylinder device until 56% condenses.. What is the amount of entropy generated (kJ/K)?arrow_forward
- where are you finding v=0.0159939 m3/kg ? , when I look for the specific volume for saturate steam at 11000 kpa , I am finding vg=15.987 ?arrow_forward50 grams of water at 20ºC is converted into steam at 250ºC at constant atmospheric pressure. Assuming the heat capacity per gram of liquid water to remain constant at 4.2 J/g K and the heat of vaporization at 100ºC to be 226 J/g, and using Cp/R=a+bT+cT2, calculate the entropy change of the system. a=3.652, b=1.157x10-3 K-1, c=0.142x10-6 K-2arrow_forwardA sample of argon at 1 atm pressure and 25°C expands reversibly and adiabatically from 0.5 L to 1.0 L. Calculate its final temperature, the work done during the expansion, and the change in internal energy. The molar heat capacity of argon at constant volume is 12.48 JK-'mol.arrow_forward
- A 50kg copper block is thrown into an isolated tank holding 80 L of water at a temperature of 75 degrees Celsius. Calculate the eventual equilibrium temperature and the process's total entropy change.arrow_forwardDerive Clausius-Clapeyron equation.arrow_forward10 kg of saturated liquid R-134a at 800 kPa is brought in contact with 2 kg ofsaturated vapor R-134a at the same pressure. Determine if any phase change will occur and why? How about if the vapor is superheated at the same pressure and at T = 50 ◦C?arrow_forward
- Determine the entropy for these states. R-134a, T = 25°C, v = 0.01 m3/kgarrow_forwardA certain polyatomic gas stored at a 180-L rigid tank and 11 atm is heated at constant volume from 35 ⁰C to 75 ⁰C. Determine the change in entropy (in J/K).arrow_forwardWhat is the specific internal energy of water at 50 kPa and 205°C? Use data from the steam tables. The specific internal energy of water is kJ/kg.arrow_forward
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