### Thermodynamics 1 Quiz Screencasts

Each screencast has at least one interactive quiz during the video. The description above each video provides a brief summary. Click here to visit Thermodynamics 2 Quiz Screencasts.

- Adiabatic Compression/Expansion: Enthalpy-Entropy Diagram
- Adiabatic Mixing Temperature
- Adiabatic Reversible Process for Ideal Gas
- Balances for an Adiabatic Flash Drum
- Calculate Vapor-Liquid Equilibrium using an EOS
- Calculate Work for Reversible/Irreversible Expansion/Compression
- Carnot Heat Engine Calculations
- Energy Balance Around a Turbine
- Energy Balance for Adiabatic Evaporation of Water into a Vacuum
- Energy Balances on a Semibatch Reactor
- Flow Work
- Heat Engine Introduction
- How to Calculate Entropy Changes: Ideal Gases
- How to Calculate Entropy Changes: Liquids, Solids, and Phase Changes
- How to Calculate Entropy Changes: Mixing Ideal Gases
- How to Determine Heat of Reaction from Heat of Formation
- How to Use a Psychrometric Chart
- Ideal Gas Properties
- Introduction to First Law: Closed System
- Introduction to First Law: Open Systems
- Joule-Thomson Expansion
- Material Balances Review
- Power Cycle Introduction
- Pressure-Enthalpy Diagram
- Pressure-Enthalpy Diagram for Rankine Cycle
- Pressure-Temperature Diagrams for Single Component Systems
- Quality of Steam
- Raoult's Law Explanation
- Reading a Psychrometric Chart
- Refrigeration Cycle Introduction
- Relative and Absolute Humidity
- Saturation Pressure from EOS Spreadsheet
- Second Law of Thermodynamics
- Single-Component Phase Diagrams
- Solid-Liquid Phase Diagrams
- Solving a Steam Turbine Problem
- State Function Explanation
- T-S and P-H Diagrams
- The Critical Point
- Three Parameter Equation of State (EOS) Introduction

**Description**: Shows reversible and irreversible processes on an enthalpy-entropy diagram, and discusses the work for the two types of processes.

**Description**: Describes how to use a diagram of enthalpy versus weight percent for a binary mixture to determine the final temperature when mixing is adiabatic.

**Description**: Applies the first law to a closed system for an adiabatic reversible process for an ideal gas.

**Description**: Presents the material balances, energy balance, and Raoult’s law for an adiabatic flash drum. The feed is an ideal binary liquid.

**Description**: Describes how to use an equation of state to calculate fugacity coefficients in both liquid and vapor phases to determine the bubble pressure and vapor composition in equilibrium with the given liquid composition.

**Description**: Shows graphically the areas on a pressure-volume diagram that are proportional to work for reversible and irreversible expansions and compressions of a gas in a piston/cylinder.

**Description**: Presents calculations for Carnot heat engine.

**Description**: Performs an energy balance around a turbine accounting for flow work and shows how flow work can be lumped into the enthalpy term.

**Description**: Presents the energy balance and the other equations needed to determine the final temperature and the amount that evaporates when water evaporates adiabatically into a vacuum.

**Description**: Applies the first law to a semibatch reactor for a fast reaction, so the conversion is limited by thermodynamics. Demonstrates how the heat of reaction appears from an energy balance.

**Description**: Introduces the concept of flow work and derives the equations governing it.

**Description**: Introduction to the Carnot heat engine.

**Description**: Derives equations to calculate entropy changes for an ideal gas as temperature and pressure change.

**Description**: Derives equations to calculate entropy changes for liquids and solids and for phase changes.

**Description**: Derives equation to calculate entropy change when ideal gases are mixed at constant temperature and pressure.

**Description**: Explains how to determine heats of reaction at 298 K from heats of formation and how to calculate heats of reaction at elevated temperatures.

**Description**: Explains how to read on a psychrometric chart: dry bulb temperature, relative humidity, moisture content, dew point temperature, enthalpy, humid air volume, and wet bulb temperature.

**Description**: This screencast introduces the concept of ideal gases and how to calculate enthalpy and internal energy changes for an ideal gas.

**Description**: Introduces the first law for a closed system and considers cases of constant pressure and constant volume.

**Description**: Explains the terms in the first law of thermodynamics for systems with mass flow into and/or out of the system and looks at some special cases.

**Description**: Describes the Joule-Thomson coefficient and calculates how much liquid forms when a high pressure gas undergoes a J-T expansion. The Peng-Robinson equation of state spreadsheet can be found on www.chethermo.net/software.

**Description**: Reviews material balances using a flash system.

**Description**: Describes the steps in a power cycle that converts high temperature heat into work using a turbine.

**Description**: Explains parts of the pressure-enthalpy diagram for a single-component system and discusses how enthalpy depends on pressure for water.

**Description**: Describes a Rankine power cycle with steam using a log pressure versus enthalpy diagram.

**Description**: Explains the pressure-temperature and pressure-volume phase diagrams for single component systems.

**Description**: Defines vapor quality and compares mass percent and volume percent of steam.

**Description**: Explains the shapes of the P-x-y and the T-x-y diagrams using Raoult’s Law.

**Description**: Uses an interactive simulation to show how to read a psychrometric chart and extract information from the chart.

**Description**: Explains each step in a refrigeration cycle and the energy balance for each step. The process is shown in a pressure-enthalpy diagram.

**Description**: Overview of relative and absolute humidity and how to calculate the amount of water in the vapor phase.

**Description**: Shows how to determine a saturation pressure from an equation of state.

**Description**: Introduces the second law of thermodynamics and describes some reversible and irreversible processes.

**Description**: Briefly describes the various diagrams used to represent single-component phase equilibrium. The diagrams shown include pressure-temperature, pressure-volume, temperature-volume, temperature-entropy, pressure-enthalpy, and enthalpy-entropy.

**Description**: Describes the regions of a liquid-solid, T-x_{Si} phase diagram for a system composed of Mg and Si.

**Description**: Explains the steps to determine work and outlet conditions for an irreversible steam turbine.

**Description**: Explanation of state functions and state variables and their application to a chemical reaction.

**Description**: Explains the temperature-entropy and the pressure-enthalpy diagrams.

**Description**: Explains what the critical point is and shows constant volume process at the critical volume, includes a demo.

**Description**: Introduces the van der Waals equation of state (EOS), which is cubic, and explains its three roots.

Click here to see a playlist of other interactive screencasts on YouTube.