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Penn State  CHE 220
 Penn State
 PROF. MARANNAS
 Thermodynamics: An Engineering Approach with Student Resource DVD, Fundamentals of Fluid Mechanics, Thermodynamic Cycles: ComputerAided Design and Optimization (Chemical Industries), Avid Liquid 7 for Windows: Visual QuickPro Guide, Apple Pro Training Series: Compressor 3 QuickReference Guide

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School: Penn State
Course: THERMODYNAMICS
CHE 220 Introduction to Chemical Engineering Thermodynamics Lecture 23: Systems in Steady Flow The first law for open systems Steady state energy balance Steady state vs. equilibrium examples 1 Chemical plants have mass flow across boundaries. What

Lecture_16
School: Penn State
Course: THERMODYNAMICS
Lecture 16  Internal energy For a system of a single component, U must be a function of T, P (or T, v or P, v), since there are only two independent state functions Expand the differential of this state function, then, in T and v: dU = (U/T )V dT +

Lecture_17
School: Penn State
Course: THERMODYNAMICS
Lecture 17  1 step model processes Many "real" thermodynamic processes (apart from irreversibility) can be modeled as composed of a succession of "onestep" processes. Important examples of these buildingblock processes are: workfree (no change in

Lecture_18
School: Penn State
Course: THERMODYNAMICS
Part VI  Heat effects from property changes Lecture 18  Enthalpy Example: cooling at constant pressure. Suppose we cool isobutylene at 80bar and 752.2K to 500K. a) Compute the work done. W = P V = P (v2  v1 ). To compute initial and final v, nee

Lecture_19
School: Penn State
Course: THERMODYNAMICS
Lecture 19  Isenthalpic expansion JouleThomson process: Model for expansion of a gas through a small hole. Consider a insulated cylinder, with two opposing pistons, held with pressures P1 and P2 < P1 , and with a third, porous piston between the ot

Lecture_20
School: Penn State
Course: THERMODYNAMICS
Lecture 20  Sensible and latent heat Addition and removal of heat is a very important process in chemical engineering. For example: Chemical reaction rates typically depend exponentially on temperature, so yield depends on heating/cooling; Reactio

Lecture_21
School: Penn State
Course: THERMODYNAMICS
Lecture 21  Multistep processes w/o phase change. Haile analyzes an example process, that of compressing and heating CO2 from 25C and 1bar, to 500C and 10bar. He considers four different processes to carry out the required state change. (sketch) You

Lecture_28
School: Penn State
Course: THERMODYNAMICS
Part VIII  2nd law Lecture 28  Carnot cycles The main results of classical thermodynamics were developed in the beginning of the 19th century, during the second industrial revolution. The "second" industrial revolution refers to the development of

Lecture_29
School: Penn State
Course: THERMODYNAMICS
Lecture 29  Limits to efficiency. Now one might expect that there should be some limitations on the efficiency of a Carnot engine, beyond the constraints of conservation of energy. For example, you might or might not be persuaded that the following

Lecture_6
School: Penn State
Course: THERMODYNAMICS
Lecture 6  Changing the State Recall "equation of state": for pure systems, only two independent properties, so a third may be given in terms of the other two. For example, v = f (T, p). How does v change when we change T and p? Recall that vt is a

Lecture_5
School: Penn State
Course: THERMODYNAMICS
Lecture 5  States on P T and P V diagrams It's easier to visualize slices of the P V T surface. P T , P V , and V T diagrams. Each have their uses. P V diagram A projection of the full P V T diagram onto the P V plane. ("Look down the T axis with o

Lecture_24after
School: Penn State
Course: THERMODYNAMICS
CHE 220 Introduction to Chemical Engineering Thermodynamics Lecture 24:examples of open system energy balances Flow calorimetry Mixing Adiabatic turbine Sudden expansion 1 Example 1: a flow calorimeter operates at steady state and conditions noted

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School: Penn State
Course: THERMODYNAMICS
CHE 220 Introduction to Chemical Engineering Thermodynamics Lecture 8: Virial Equations Taylor series expansion Expansion for Z in density Virial coefficients Expansion for Z in pressure 1 The Taylor series expansion is used to estimate the value

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School: Penn State
Course: THERMODYNAMICS
CHE 220 Introduction to Chemical Engineering Thermodynamics Lecture 1: What is thermodynamics? Thermodynamics and its role in chemical engineering Difference between 220 and 320 Work as energy chemical engineering has three main components. Che 33

Che_220_lecture_2_after
School: Penn State
Course: THERMODYNAMICS
CHE 220 Introduction to Chemical Engineering Thermodynamics Lecture 2: The NittyGritty Concepts in thermodynamics Interactions of boundaries Properties and processes Choosing the system is an important step in solving problems in thermodynamics. S

Lecture_4
School: Penn State
Course: THERMODYNAMICS
Part 2  States of Pure Substances in Terms of Measurables Lecture 4  PvT surfaces for pure components Gibbs phase rule: We seek the number N of independent properties needed to specify a state with P coexisting phases, with C total components prese

Lectures_1213
School: Penn State
Course: THERMODYNAMICS
Part IV  Work Lecture 12  PV work Recall the notion of a thermodynamic process: change of state via some external intervention. Common processes include: Adding or removing heat Expanding or compressing the system Often, the process involves requ