Material and Energy Balances

Video Lectures

Displaying all 155 video lectures.
Lecture 1
Unit Conversions (Practice)
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Unit Conversions (Practice)
Three examples on approaching unit conversions using a single dimensional equation. Reviewed by faculty from other academic institutions.
Lecture 2
Systems of Units
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Systems of Units
Overview of base units in SI/CGS/American Engineering. Summarizes use of multiples and derived units. Reviewed by faculty from other academic institutions.
Lecture 3
Force & Weight (Units & Conversions)
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Force & Weight (Units & Conversions)
Overview of SI and American Engineering units used for force. Describes use of gravitational constant as conversion factor and difference between force and weight. Reviewed by faculty from other academic institutions.
Lecture 4
Significant Figures
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Significant Figures
The rules for significant figures are presented. Examples are given of how to add, subtract, multiply, and divide numbers so that the answer has the correct number of significant figures. Reviewed by faculty from other academic institutions.
Lecture 5
Solving Set of Linear Equations
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Solving Set of Linear Equations
Explains how to solve multiple equations simultaneously. Shows an example of how to solve a system of equations with three unknowns.
Lecture 6
Changing Units in an Equation
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Changing Units in an Equation
Demonstrates how to convert the Arrhenius equation from SI to English units. Reviewed by faculty from other academic institutions.
Lecture 7
Dimensions of Differential Equations
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Dimensions of Differential Equations
Determine the units of constants in a dimensionally homogeneous equation.Reviewed by faculty from other academic institutions.
Lecture 8
Dimensional Homogeneity
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Dimensional Homogeneity
Introduces the concept of dimensional homogeneity and dimensionless numbers. Reviewed by faculty from other academic institutions.
Lecture 9
Dimensionless Groups (Reynolds Number Example)
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Dimensionless Groups (Reynolds Number Example)
Example of unit conversion for a dimensionless group by showing the Reynolds number, a number describing how a fluid flows through a pipe. Reviewed by faculty from other academic institutions.
Lecture 10
Linearization of Non-Linear Equations
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Linearization of Non-Linear Equations
Examples of how you can linearize non-linear equations into the form y=mx + b so that plotted data can help you determine the parameters a & b.
Lecture 11
Linearization Example (Cell Growth) (BIO)
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Linearization Example (Cell Growth) (BIO)
An example describing how you can determine cell growth kinetics given two data points during their exponential growth phase. Simplified example demonstrating linearization practice. Reviewed by faculty from other academic institutions.
Lecture 12
Linearize/Plot Non-Linear Equations (Excel)
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Linearize/Plot Non-Linear Equations (Excel)
Demonstrates how to linearize and plot non-linear equations using Excel 2010.
Lecture 13
Specific Gravity of a Mixture
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Specific Gravity of a Mixture
Determine the composition given the specific gravity of two components and the mixture.
Lecture 14
Density, Mass Flow, and Volumetric Flow
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Density, Mass Flow, and Volumetric Flow
A description on the relationship between density, mass flow rate and volumetric flow rate. An example conceptual problem is discussed.
Lecture 15
Average Molecular Weight Derivation
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Average Molecular Weight Derivation
Derives average molecular weight given mass or molar compositions. Reviewed by faculty from other academic institutions.
Lecture 16
Average Molecular Weight Calculation
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Average Molecular Weight Calculation
Calculates average molecular weight using a mass basis and a molar basis. Reviewed by faculty from other academic institutions.
Lecture 17
Mass and Mole Fractions (Conversions)
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Mass and Mole Fractions (Conversions)
An overview on how to change molar fractions to mass fractions and vice-versa.
Lecture 18
Molar Conversions
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Molar Conversions
Shows how to convert quickly between mol, g-mol, lb-mol, kg-mol, and k-mol. Reviewed by faculty from other academic institutions.
Lecture 19
Determining Concentrations of Streams (ppm)
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Determining Concentrations of Streams (ppm)
A wastewater stream needs treatment. Determine the amount of acid needed to neutralize a base.
Lecture 20
Using Average Molecular Weight to Simplify a Material Balance
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Using Average Molecular Weight to Simplify a Material Balance
Determines the molar flow rate of a gas mixture using the average molecular weight. Reviewed by faculty from other academic institutions.
Lecture 21
Introduction to Pressure
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Introduction to Pressure
Defines the different types of pressure. Uses head pressure to solve an example problem.
Lecture 22
Manometers
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Manometers
An overview on manometers and how they are used to determine force differentials.
Lecture 23
Acceleration Due to Pressure
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Acceleration Due to Pressure
Calculates acceleration using a force balance and gauge pressure. Reviewed by faculty from other academic institutions.
Lecture 24
Force Balance on Inclined Manometer
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Force Balance on Inclined Manometer
Determines the relationship between pressure change and manometer reading for an inclined manometer.
Lecture 25
General Balance for Material Balances
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General Balance for Material Balances
A general mass balance is presented and simplifications of the balance are shown for different processes.
Lecture 26
General Mass Balance on Single Tank
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General Mass Balance on Single Tank
Introduction to processes and the general material balance. A short example on a tank with inlet and outlet flow. Reviewed by faculty from other academic institutions.
Lecture 27
Degree of Freedom Analysis on a Single Unit
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Degree of Freedom Analysis on a Single Unit
A degree of freedom analysis is done on a single process unit to determine whether the unknowns can be solved for given the information presented. Reviewed by faculty from other academic institutions.
Lecture 28
Introduction to Degrees of Freedom
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Introduction to Degrees of Freedom
Explains how to calculate degrees of freedom and performs two examples on single unit processes. Made by faculty at Lafayette College and produced by the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 29
Material Balance Problem Approach
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Material Balance Problem Approach
Presents a general approach for solving simple material balances. Includes an example of independent versus dependent equations. Reviewed by faculty from other academic institutions.
Lecture 30
Performing a Material Balance on a Single Unit
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Performing a Material Balance on a Single Unit
Performs a mass balance on a distillation column using degree of freedom analysis. Reviewed by faculty from other academic institutions.
Lecture 31
Average Molecular Weight of Mixed Stream
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Average Molecular Weight of Mixed Stream
Air and methane are being diluted to create non-flammable mixture. Determine amount of air needed to dilute stream given starting composition. Reviewed by faculty from other academic institutions.
Lecture 32
Flowchart Example
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Flowchart Example
Example of how to create a flowchart. Reviewed by faculty from other academic institutions.
Lecture 33
Liquid-Liquid Extraction Material Balance
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Liquid-Liquid Extraction Material Balance
Briefly explains liquid-liquid extraction and performs the mass balances to calculate the mass flow rate of organic needed to obtain a certain separation. Made by faculty at Lafayette College and produced by the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 34
Material Balance over a Crystallizer (Solubility)
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Material Balance over a Crystallizer (Solubility)
Given solubility plot, determine degrees of superheat of incoming stream and compositions of streams entering and exiting a crystallizer. Reviewed by faculty from other academic institutions.
Lecture 35
Material Balances for a Mixing Process
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Material Balances for a Mixing Process
Determine instrument settings to control material balances in a mixing process.
Lecture 36
Scaling a Material Balance
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Scaling a Material Balance
Describes how to obtain and use a scaling factor. Reviewed by faculty from other academic institutions.
Lecture 37
Water Vapor Adsorber Material Balance
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Water Vapor Adsorber Material Balance
Given an inlet water-air stream and amount adsorbed from the air, determine flow rates and composition of water. Reviewed by faculty from other academic institutions.
Lecture 38
Analysis of a Split Point
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Analysis of a Split Point
Analyzes a splitting point and explains why modeling this type of system is different from other types of systems. Made by faculty at Lafayette College and the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 39
Degree of Freedom Analysis on Multiple Unit Process
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Degree of Freedom Analysis on Multiple Unit Process
Uses the degree of freedom analysis to analyze a process and determine whether it can be defined.
Lecture 40
Multiple Unit Material Balance: Degree of Freedom Analysis
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Multiple Unit Material Balance: Degree of Freedom Analysis
Demonstrates using degree of freedom analysis on a multiple unit process to solve for unknown stream parameters.
Lecture 41
Solving Material Balances on Multiple Units
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Solving Material Balances on Multiple Units
Example of setting up material balances on a multiple unit process involving a liquid-liquid extraction unit and a distillation column. Made by faculty at Lafayette College and produced by the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 42
Crystallizer Material Balance with Recycle
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Crystallizer Material Balance with Recycle
Performs material balances on multiple units to solve for unknowns. Focuses on crystallizer balance where a slurry is part solid and part liquid.
Lecture 43
Designing a Flowchart
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Designing a Flowchart
Explains how to take a problem description and build a flowchart from it.
Lecture 44
Multiple Unit Material Balance - Decaf Coffee
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Multiple Unit Material Balance - Decaf Coffee
Performs multiple unit balances to solve for unknown stream rates and compositions.
Lecture 45
Reactor with Recycle
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Reactor with Recycle
Solves material balances over a process involving a combustion reactor and a recycle loop.
Lecture 46
Equilibrium
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Equilibrium
Solves for equilibrium compositions using extent of reaction. Reviewed by faculty from other academic institutions.
Lecture 47
Reaction Yield and Selectivity
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Reaction Yield and Selectivity
Solves for yield and selectivity using extent of reaction.
Lecture 48
Stoichiometry
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Stoichiometry
Reviews stoichiometry and limiting reactants. Reviewed by faculty from other academic institutions.
Lecture 49
Chemical Equilibrium: Effect of an Inert
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Chemical Equilibrium: Effect of an Inert
Examine how adding an inert changes the equilibrium conversion of a gas-phase reaction for both isothermal and adiabatic cases. Made by faculty at the University of Colorado Boulder, Department of Chemical and Biological Engineering.
Lecture 50
Gas Phase Chemical Equilibrium
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Gas Phase Chemical Equilibrium
Determine the equilibrium conversion of a gas phase reaction with and without the presence of an inert. Made by faculty at the University of Colorado Boulder, Department of Chemical and Biological Engineering. Reviewed by faculty from other academic institutions.
Lecture 51
Single Reaction With Recycle
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Single Reaction With Recycle
Determines production rates and purge stream conditions for a single reaction with recycle and purge. Reviewed by faculty from other academic institutions.
Lecture 52
Two Reactions (Extent of Reaction Method)
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Two Reactions (Extent of Reaction Method)
Example with two reactions, one desired and one undesired, occurring in a reactor. Calculates reactant conversion, yield, selectivity, and percent excess. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering. Reviewed by faculty from other academic institutions.
Lecture 53
Fractional Conversion (Interactive)
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Fractional Conversion (Interactive)
Multiple choice question: Examine how fractional conversion relates between species in a reaction.Annotations must be turned on to properly use this interactive screencast. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 54
Limiting Reagent (Interactive)
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Limiting Reagent (Interactive)
Multiple choice question: Determine amount of product formed based on conversion of limiting reactant.Annotations must be turned on to use interactive screencasts. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 55
Reaction Stoichiometry (Interactive)
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Reaction Stoichiometry (Interactive)
Interactive screencast: Determine the amount of a product formed based on reactant information. Annotations must be turned on to properly view this video. Links do not work if you are using your smart phone. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 56
Three Methods for Reactive MEB Problems
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Three Methods for Reactive MEB Problems
An overview of molecular and atomic species balances and the extent of reaction method for solving reactive material balances.
Lecture 57
Atomic Species Balances
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Atomic Species Balances
Uses atomic species balances to solve a material balance. Reviewed by faculty from other academic institutions.
Lecture 58
Extent of Reaction for Material Balances
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Extent of Reaction for Material Balances
An overview of how to use the extent of reaction in a material balance involving multiple reactions. Reviewed by faculty from other academic institutions.
Lecture 59
Molecular Species Balances
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Molecular Species Balances
Performs a molecular species balance for a single reactor. Reviewed by faculty from other academic institutions.
Lecture 60
Two Reactions in a Two-Phase Reactor
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Two Reactions in a Two-Phase Reactor
Based on outlet compositions, determine the flow rates and the selectivity for a two reaction system. Reviewed by faculty from other academic institutions.
Lecture 61
Percent Excess Air
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Percent Excess Air
Calculates the percent excess air needed to produce rust from iron.
Lecture 62
Wet to Dry Basis
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Wet to Dry Basis
Discusses the difference between wet and dry basis analysis. Shows how to convert from a wet basis to a dry basis. Reviewed by faculty from other academic institutions.
Lecture 63
Dry to Wet Basis
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Dry to Wet Basis
Converts a dry stack gas to a wet basis given the mole fraction of water in the product gas. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering.
Lecture 64
Critical Properties of a Fluid (T and P)
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Critical Properties of a Fluid (T and P)
An introduction to the critical temperature and pressure of a species and how it will relate to using equations of state.
Lecture 65
Ideal Gas Law - Lung Example (BIO)
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Ideal Gas Law - Lung Example (BIO)
A brief overview of the ideal gas law and an example demonstrating its use in determining the pressure change in the lungs.
Lecture 66
Standard Temperature and Pressure - Ideal Gas Law
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Standard Temperature and Pressure - Ideal Gas Law
Overview of standard conditions (temperature and pressure) and its use with the ideal gas law.
Lecture 67
Ideal Gas Mixture Characterization
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Ideal Gas Mixture Characterization
Determine partial pressures in an ideal gas mixture and physical properties about the mixture.
Lecture 68
Ideal Gas Mixtures Example
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Ideal Gas Mixtures Example
Example problem looking at potential hazards caused by an acetone spill in a lab, specifically explosive and inhalation hazards.
Lecture 69
Ideal Gases Example Biofermentation (BIO)
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Ideal Gases Example Biofermentation (BIO)
Use material balances and the ideal gas law to determine the oxygen uptake rate for cells in a bioreactor.
Lecture 70
SRK Equation of State Example
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SRK Equation of State Example
An example problem determining pressure of a gas tank using the Soave-Redlich-Kwong (SRK) equation of state and comparing it to the ideal gas equation of state.
Lecture 71
Compressibility Factor (Z-Factor) Equation of State
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Compressibility Factor (Z-Factor) Equation of State
An example problem where the pressure inside a bottle of CO2 is calculated using the compressibility factor equation of state. Reviewed by faculty from other academic institutions.
Lecture 72
Pressure-Volume Diagram
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Pressure-Volume Diagram
Explains a single-component pressure-volume phase diagram. Made by faculty at the University of Colorado Boulder, Department of Chemical and Biological Engineering.
Lecture 73
Heat of Vaporization: Clausius-Clapeyron
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Heat of Vaporization: Clausius-Clapeyron
Estimate the heat of vaporization using the Clausius-Clapeyron equation. Reviewed by faculty from other academic institutions.
Lecture 74
Heat of Vaporization: Antoine's Equation
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Heat of Vaporization: Antoine's Equation
Uses Antoine's equation, which relates saturation pressure to temperature, to determine the heat of vaporization using the Clausius-Clapeyron equation. Reviewed by faculty from other academic institutions.
Lecture 75
Gibbs Phase Rule
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Gibbs Phase Rule
Explains the Gibbs phase rule and applies it to a binary system that has vapor and partially miscible liquids. 3Reviewed by faculty from other academic institutions.
Lecture 76
Relative and Absolute Humidity
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Relative and Absolute Humidity
Overview of relative and absolute humidity and how to calculate the amount of water in the vapor phase.
Lecture 77
Single Condensable Species Balance (Raoult's Law)
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Single Condensable Species Balance (Raoult's Law)
Demonstrates the use of Raoult's law on a single condensable species in vapor liquid equilibrium.
Lecture 78
Air/Water Vapor-Liquid Equilibrium
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Air/Water Vapor-Liquid Equilibrium
Discusses how vapor-liquid equilibrium changes in an air/water system when some of the air is removed.
Lecture 79
Condense Water Vapor from Air
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Condense Water Vapor from Air
Plots partial pressure versus temperature as the temperature of 50% relative humidity air is lowered.
Lecture 80
Raoult's Law (Water as Condensable Component)
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Raoult's Law (Water as Condensable Component)
Uses Raoult's law to determine molar fraction of water in a vapor stream that is removed in a condenser.
Lecture 81
Lever Rule
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Lever Rule
Demonstrate how to use the lever rule on a Txy diagram.
Lecture 82
Multi-condensable Species in VLE
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Multi-condensable Species in VLE
Demonstrates the use of Raoult's law to a system containing three components in the vapor phase in equilibrium with two condensable species in the liquid phase. Reviewed by faculty from other academic institutions.
Lecture 83
Raoult's Law Explanation
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Raoult's Law Explanation
Explains the shapes of the Pxy and the Txy diagrams for Raoult's law.
Lecture 84
Add Non-Volatile Component to VLE System
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Add Non-Volatile Component to VLE System
A component with a negligible vapor pressure is added to a two-phase N2/H2O system. Reviewed by faculty from other academic institutions.
Lecture 85
Add One Component to Binary VLE System
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Add One Component to Binary VLE System
Explain what happens when one component is added to a binary mixture in vapor-liquid equilibrium.
Lecture 86
Condense a Binary Mixture
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Condense a Binary Mixture
Discuss which species condense when a binary vapor is cooled.
Lecture 87
Phase Equilibrium: Txy Diagram
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Phase Equilibrium: Txy Diagram
A conceptual question investigating how the molar composition changes to a vapor-liquid equilibrium system as temperature is changed.
Lecture 88
Binary Vapor: Partial Condensation
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Binary Vapor: Partial Condensation
Determine the fraction of binary vapor that condenses as the temperature decreases. Reviewed by faculty from other academic institutions.
Lecture 89
Bubble Point Calculation for Condenser
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Bubble Point Calculation for Condenser
Calculate the minimum pressure a condenser can operate to completely condense a binary vapor.
Lecture 90
Dew Temperature Calculation/Excel Solver
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Dew Temperature Calculation/Excel Solver
Determine the liquid composition and temperature using Excel solver, given the vapor composition and the pressure.
Lecture 91
Pxy Diagram (Simulation)
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Pxy Diagram (Simulation)
Uses an interactive Mathematica simulation to describe a pressure-mole fraction diagram (P-x-y) that is generated with Raoult's law. Behavior is discussed where the pressure is changed at constant overall composition and where the overall composition is changed at constant pressure. This simulation is available at: http://demonstrations.wolfram.com/LeverRuleAppliedToTheBenze...
Lecture 92
Solving VLE Using Raoult's Law and Iterative Method Solver
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Solving VLE Using Raoult's Law and Iterative Method Solver
Shows how a computer solver is useful in solving for unknown temperature of a binary VLE system using Raoult's law and Antoine's equation.
Lecture 93
Distillation of a Two Component Mixture (Part I)
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Distillation of a Two Component Mixture (Part I)
Example of a material balance on a distillation column used to separate two distinct streams, a vapor and a liquid phase. Both streams include recycle components back into the distillation column.
Lecture 94
Distillation of a Two Component Mixture (Part II)
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Distillation of a Two Component Mixture (Part II)
A continuation of the Distillation Column problem focusing on the reboiler. Determine the operating temperature of the reboiler and the vapor composition recycled to the distillation column.
Lecture 95
Gas Stripping (Henry and Raoult's Laws)
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Gas Stripping (Henry and Raoult's Laws)
An example of gas stripping using both Henry's law and Raoult's law as equations which help solve the system.
Lecture 96
Solubility Introduction
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Solubility Introduction
Introduces saturated and supersaturated solutions. Uses a solubility chart to determine the mass fraction of solute in solution.
Lecture 97
Using Solubility Diagrams for Material Balances
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Using Solubility Diagrams for Material Balances
Uses a salt solubility diagram to determine concentrations of salt solute in water for a crystallizer material balance.
Lecture 98
Interpolating Tie Lines on a Ternary Diagram
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Interpolating Tie Lines on a Ternary Diagram
Describes how to interpolate equilibrium tie lines on a ternary diagram.
Lecture 99
Ternary Phase Diagram Basics (Simulation)
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Ternary Phase Diagram Basics (Simulation)
Uses a simulation to show how ternary phase diagrams are interpreted. This is for a single phase, three component system.
Lecture 100
Using a Triangular (Ternary) Phase Diagram
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Using a Triangular (Ternary) Phase Diagram
A brief overview of using a triangular phase diagram for a tertiary system (acetone-water-MIBK).
Lecture 101
VLLE for Immiscible Liquids
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VLLE for Immiscible Liquids
A Txy diagram is used to explain phases present for vapor-liquid-liquid equilibrium for 2 immiscible species. Reviewed by faculty from other academic institutions.
Lecture 102
Partial Pressure: Immiscible Liquids
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Partial Pressure: Immiscible Liquids
Determine the partial pressures of two species that are being condensed if the liquids are immiscible.
Lecture 103
Triangular (Ternary) Phase Diagram Example
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Triangular (Ternary) Phase Diagram Example
Using a triangular phase diagram for a tertiary system, determine compositions of the outlet streams coming from a mixer.
Lecture 104
Introduction to Energy
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Introduction to Energy
An introduction to the first law and explanation of the terms in the energy balance. Reviewed by faculty from other academic institutions.
Lecture 105
What is Enthalpy?
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What is Enthalpy?
Presents the definition of enthalpy, its differential, and its use in energy balances. Reviewed by faculty from other academic institutions.
Lecture 106
Adiabatic Compression of an Ideal Gas
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Adiabatic Compression of an Ideal Gas
Calculates the adiabatic temperature for compression of an ideal gas, both reversibly and irreversibly. Reviewed by faculty from other academic institutions.
Lecture 107
Open and Closed Systems
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Open and Closed Systems
Gives the energy balance for both open and closed systems and compares the two.
Lecture 108
Irreversible Adiabatic Expansion
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Irreversible Adiabatic Expansion
Energy balance on an ideal gas that undergoes irreversible, adiabatic expansion.
Lecture 109
Energy Balance on a Human (BIO)
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Energy Balance on a Human (BIO)
Apply the first law to a human being "system."
Lecture 110
Gas Expansion From a Tank
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Gas Expansion From a Tank
An energy balance is used to determine the final temperature of an ideal gas that expands from a tank into a piston/cylinder.
Lecture 111
Energy Balance on Open System (PAV Device) (BIO)
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Energy Balance on Open System (PAV Device) (BIO)
Compare two biomedical devices for reducing work done by the heart. An energy balance is performed from the veins to the aorta.
Lecture 112
How to Use Steam Tables
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How to Use Steam Tables
Simple steam tables are introduced and differences between types of steam are presented.
Lecture 113
Linear Interpolation
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Linear Interpolation
Calculates saturated pressure by linear interpolation using information from the steam tables. Reviewed by faculty from other academic institutions.
Lecture 114
Advanced Interpolation
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Advanced Interpolation
Performs interpolation multiple times to calculate specific volume given pressure and temperature. Reviewed by faculty from other academic institutions.
Lecture 115
Introduction to Steam Tables
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Introduction to Steam Tables
Steam tables are used to solve two example problems: 1) density at critical point, 2), quality of liquid-vapor mixture. Reviewed by faculty from other academic institutions.
Lecture 116
Introduction to Steam Tables 2
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Introduction to Steam Tables 2
Steam tables are used to solve two example problems: 1) throttle liquid water from high pressure, 2) heat liquid-vapor mixture at constant volume.
Lecture 117
Steam Tables: Interpolation
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Steam Tables: Interpolation
Example problems that calculate enthalpy of steam by interpolation of steam tables. Reviewed by faculty from other academic institutions.
Lecture 118
Steam Table Example
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Steam Table Example
Presents an example on how to use the steam tables to find enthalpy changes as well as volumetric flows of steam. Reviewed by faculty from other academic institutions.
Lecture 119
Quality of Steam
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Quality of Steam
Defines vapor quality and compares mass percent and volume percent of steam. Reviewed by faculty from other academic institutions.
Lecture 120
Steam Tables: Calculating Quality
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Steam Tables: Calculating Quality
Calculates the quality of a two-phase water mixture in vapor-liquid equilibrium using steam tables.
Lecture 121
Water Properties from Steam Tables
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Water Properties from Steam Tables
Uses steam tables to determine properties of water. Reviewed by faculty from other academic institutions.
Lecture 122
Compare Steam Tables to Ideal Gas Law
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Compare Steam Tables to Ideal Gas Law
Calculates the volume of a gas using the ideal gas law and compares to the volume at the same conditions from the steam tables.
Lecture 123
Energy Balance on a Heat Exchanger
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Energy Balance on a Heat Exchanger
Performs an energy balance on a heat exchanger that has superheated steam fed to it. Uses the steam tables.
Lecture 124
Throttle Example: High-Pressure Liquid
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Throttle Example: High-Pressure Liquid
Use steam tables to determine the outlet temperature when a high-pressure liquid is throttled to lower pressure. Reviewed by faculty from other academic institutions.
Lecture 125
Unsteady-State Energy Balance on a Tank
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Unsteady-State Energy Balance on a Tank
Unsteady-state energy balance on a tank containing steam to which additional steam is added. Uses steam tables.
Lecture 126
Bernoulli Equation Example
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Bernoulli Equation Example
Given a pipe system determine the height water would reach leaving the pipe.
Lecture 127
Reference States for Enthalpy Calculations
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Reference States for Enthalpy Calculations
Explains reference states and shows how to use them in calculating enthalpy changes for a variety of systems. Reviewed by faculty from other academic institutions.
Lecture 128
Choosing a Reference State (Example)
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Choosing a Reference State (Example)
An example problem detailing the use of a reference state in determining the change in enthalpy of vapor system reaching equilibrium.
Lecture 129
Sensible Heat from Specific Enthalpy
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Sensible Heat from Specific Enthalpy
Example using physical properties to perform sensible heat calculations. Calculates the heat required to increase the temperature of water vapor from 100C to 300C.
Lecture 130
Psychrometric Charts (Humidity Charts)
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Psychrometric Charts (Humidity Charts)
An overview on how to read the psychrometric charts for water/air systems. Some examples are given throughout the video.
Lecture 131
Including a Phase Change in an Energy Balance
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Including a Phase Change in an Energy Balance
Overview of sensible and latent heats and how to account for phase changes in energy balances. Reviewed by faculty from other academic institutions.
Lecture 132
Latent Heat
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Latent Heat
Provides an overview of latent heat. Calculates the heat required to vaporize and condense 100 mol of water at 100C and atmospheric pressure.
Lecture 133
Calculate Physical Properties using Humidity Charts
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Calculate Physical Properties using Humidity Charts
Uses humidity charts to calculate the dew point and the wet bulb temperature of a system.
Lecture 134
Humidity Chart Example
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Humidity Chart Example
Uses humidity chart to model a heating process. Obtains specific enthalpy, humid volume, and relative humidity values from the humidity charts.
Lecture 135
Humidity Chart: Adiabatic Humidification
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Humidity Chart: Adiabatic Humidification
Calculates the outlet temperature and rate of water evaporation in a spray chamber for an adiabatic cooling process using the humidity charts.
Lecture 136
Energy Balance on a Condenser
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Energy Balance on a Condenser
Calculates the cooling duty required to condense and cool acetone from 100C to 25C using an energy balance. Uses both sensible and latent heat to perform the calculation.
Lecture 137
Adiabatic Mixing
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Adiabatic Mixing
Calculates the outlet temperature of an adiabatic mixing process using enthalpy concentration diagrams.
Lecture 138
Heat of Mixing
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Heat of Mixing
Calculate heat of mixing when two solutions are mixed. Reviewed by faculty from other academic institutions.
Lecture 139
Isothermal Mixing
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Isothermal Mixing
Calculates the heat released during an isothermal mixing process using an enthalpy concentration diagram.
Lecture 140
Heat of Reaction (from Heat of Formation)
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Heat of Reaction (from Heat of Formation)
Determine the heat of reaction at a higher temperature from the heat of reaction at 25 °C.
Lecture 141
Heat Removal from a Chemical Reactor
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Heat Removal from a Chemical Reactor
Determines the heat removal so that a chemical reactor is isothermal.
Lecture 142
Hess's Law
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Hess's Law
Explains Hess's law and provides an example of how to use it to solve for the heat of reaction for an equation. Reviewed by faculty from other academic institutions.
Lecture 143
Heats of Formation
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Heats of Formation
An example problem using heats of reaction to determine the heat of formation of one of the reactants.
Lecture 144
Heat of Combustion
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Heat of Combustion
Uses Hess's law to show how heat of combustion is used to calculate the heat of reaction.
Lecture 145
Thermochemistry of Solutions
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Thermochemistry of Solutions
Calculates the heat of reaction for the neutralization of sulfuric acid with sodium hydroxide.
Lecture 146
Calculating Enthalpy Changes Using Heats of Formation Method
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Calculating Enthalpy Changes Using Heats of Formation Method
An example problem where the enthalpy change of a reaction is determined using the heats of formation method and material balances. Reviewed by faculty from other academic institutions.
Lecture 147
Calculating Enthalpy Changes Using Heat of Reaction Method
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Calculating Enthalpy Changes Using Heat of Reaction Method
An example problem where the enthalpy change of a reaction is determined using the heat of reaction method and material balances.
Lecture 148
Energy Balances with Unknown Outlet Conditions
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Energy Balances with Unknown Outlet Conditions
Performs an energy balance to calculate the unknown outlet temperature.
Lecture 149
Steam Reformer Material and Energy Balance
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Steam Reformer Material and Energy Balance
Determine the outlet composition from a steam reforming reactor using both material and energy balances.
Lecture 150
Adiabatic Flame Temperature
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Adiabatic Flame Temperature
Calculates the adiabatic flame temperature when butane burns in pure oxygen. Reviewed by faculty from other academic institutions.
Lecture 151
Excel Solver Introduction
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Excel Solver Introduction
Describes how to use the solver function in Excel 2010.
Lecture 152
MEB Final Exam Review (Part I)
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MEB Final Exam Review (Part I)
Solves for the composition and dew point temperature of the product stream for a combustion reactor given excess air and fractional conversion. Reviewed by faculty from other academic institutions.
Lecture 153
MEB Final Exam Review (Part II)
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MEB Final Exam Review (Part II)
Performs the energy balances for a combustion reactor using heat of formation method.
Lecture 154
MEB Final Exam Review (Part II)
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MEB Final Exam Review (Part II)
A final exam review for Material & Energy Balances. Reviewed by faculty from other academic institutions.
Lecture 155
MEB Final Exam Review (Part IV)
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MEB Final Exam Review (Part IV)
Continues from MEB Final exam review part 3 for solving material balances on a distillation column.