Lecture 17, October 3rd, 2016
Refrigeration
Reading: 9.1 9.3
= coefficient of performance, reflects net heat absorbed per net work input (unitless)
H1 = enthalpy of the liquid leaving the throttle valve and entering the evaporator (energy mass1 or energ
Lecture 15, September 28th, 2016
Production of power from heat
Reading: Chapter 8
= ratio of CP and CV (unitless)
= engine efficiency, in terms of net work produced per heat supplied by the fuel (unitless)
PA = within the Brayton cycle, the pressure of
Lecture 13, September 23rd, 2016
Turbines and compressors
Reading: 7.2
No new equations
Twophase data/example from lecture 12 equation sheet
Example: 1.0 mol/s of ethylene gas at 3000C, 45 bar is expanded in a wellinsulated turbine to a
final pressure o
Lecture 12, September 21st, 2016
Twophase systems, Tabulated Data
Reading: end of 6.5, 6.6
Continued example from lecture 11:
Using the generalized correlation to solve the butane/oxygen mixing problem from exam #1.
Stream
Butane
Butane
Oxygen
Oxygen
inl
Lecture 11, September 19th, 2016
Residual properties
Reading: 6.2, 6.3, 6.7
= part of the equation of state calculations, may be a function of T r and (see lecture 4)
= part of the equation of state calculations (see lecture 4)
, = internal parameter for
Lecture 14, September 26th, 2016
Turbines and compressors
= efficiency of a turbine or compressor (unitless)
= ratio of final and initial temperatures (unitless)
Reading: 7.2, 7.3
A, B, C, D = heat capacity coefficients from Table C.1 (units vary)
H = e
Lecture 3, August 26th, 2016
Energy balance for ideal gas
Reading: 3.1 3.5
= ratio of CP and CV (unitless)
CP = constantpressure heat capacity (energy mole1 temperature1)
CV = constantvolume heat capacity (energy mole1 temperature1)
n = moles (mole
Lecture 10, September 14th, 2016
Introduction of Helmholtz and Gibbs energy, residual properties
Reading: 6.1 6.2
A = Helmholtz energy (energy mole1)
G = Gibbs energy (energy mole1)
H = enthalpy (energy mole1)
Mig = property M for an ideal gas (units v
Lectures 4 and 5, August 29th and 31st, 2016
Nonideal gas behavior, Reading: 3.53.7
See the accompanying worksheet for cubic equations of state
= EOSspecific constant or calculated as a function of Tr and possibly (unitless)
= internal parameter for
Lecture 2, August 24th, 2016
Opensystem energy balance, heat effects
Reading: 2.12, Chapter 4
i = stoichiometric number for species i; negative for reactants and positive for products (unitless)
g = gravitational constant (length time2)
H = specific ent
Lecture 8, September 9th, 2016
Entropy balances, ideal and lost work
= thermodynamic efficiency of a process (unitless)
Reading: 5.8 5.10
fs = refers to the flowing streams entering and exiting the system
m* = flowrate of streams entering and exiting the
Lecture 1, August 22nd, 2016
Closedsystem energy balance
Reading: Chapter 1, 2.1 2.11, 4.1
A = Parameter for estimating Cp/R as a function of temperature, Table C.1 (unitless)
B = Parameter for estimating Cp/R as a function of temperature, Table C.1 (tem
Lecture 6, September 2nd, 2016
Heat Engines, Entropy
= thermal efficiency of a process (unitless)
Reading: 5.1 5.5
A, B, C, D = speciesspecific values of the Cp/R = A + BT + CT2 + DT2 equation, Table C.1
= heat capacity for an ideal gas (energy mole1
Lecture 7, September 7th, 2016
Entropy and entropy balances
Reading: 5.5 5.7
= ratio of final temperature to initial temperature (unitless)
A, B, C, D = speciesspecific values of the Cp/R = A + BT + CT2 + DT2 equation, Table C.1
= heat capacity for an
C hE 210: Meeting 4 0
April 27, 2011
Outline (F&R Chapters 4.66.8)
Project
F 4/29: Complete Portfolio and
Material Balances with Reactions
Compressibility Charts
Antoine Equation, Raoult's Law
and Henry's Law
Corrections to Problem S et 3
Final Exam
W 5/
ChE 210: Meeting 25 March 21, 2011
Outline (F&R Sections 7.07.4) Homework Due Friday 03/25/2011
 Energy of a System 4.61 ac, 4.78, 6.59, 7.1, 7.4, 7.11,
 Transfer of Energy between 7.14
System and Surroundings
 Energy Balances on Closed
Systems
