Interrelations



Chapter Exercise point A to B Interrelation Explanation
2 Unit Conversions1 atm = ? psi1 atm / 14.7 psiincludes a g-mole to lb-mole example
2Using Given Relations5000 gal. oil = ? airplanesuse given conversionsairplane problem
3Pressure Topics3 psig = ? psia Pabs=Patm + PgaugeStatic Pressure, Manometers
3Temperature ConversionsTemp. change of 37C = ? FΔ T(F)=1.8*Δ T(C)Temperature Formulas
3
Density
Solids and Liquids
SG&Ref or mass&vol of Cu = ? ρ of Cuρ(Cu)=ρ(Ref)*SG(Cu) or ρ(Cu)=m(Cu)/V(Cu) Concise Explanations
3Concentrations1g salt in 1cup of water = ? (mol fraction)mol fraction = mol salt / mol solutionMolarity, Mass/Mole Fractions, ppm, and ppb
3/4Flow Rates2 gal. H2O in 3 min. = ? m-dot (g/s)m-dot = mass/timewhat is m-dot? why do we use it?
2/3ReviewT, P, ρ, xA, yA, m-dotmake a study guideInterrelations Review
4
Material Balance
Intro
given material stream info => desired answerread prob, write flow chart, solveKey points and terms
4
Material Balance
Without Reactors
given flow rates => write balances, solvehere, in=out for all components
Includes
Recyle and Bypass
4
Material Balances
Reactive Systems
given flow rates => write balances, solveUse mole balances via extents of reactionIncludes some key interrelations
4
Material Balances
Review
Material Balance Test => desired resultsKnow the algorithms (see review), lots of practiceReview
5Ideal GasSTP of O2(gas) => ? density ρ = P*MW / R*TSTP, Molar Volume, and More
5Gas Mixturesair @ 1atm, 78% O2 => ? atm O2Pi = yi*PDalton's Law and Amagat's Law
6
Gas-Liquid/Solid
Intro, Laws
air is .1 %H2O at 40C => ? P* H2Odirect relation of P* & TRaoult's Law, Saturation Formulas, and More
6
Gas-Liquid/Solid
Diagrams
air is .1 %H2O at 40C => ? PH2O Pi = xi*Pi*(T)Pxy/Txy Diagrams and Phase Diagrams
6Solids in Liquids add solid to a pure liquid => ? raise or lower P*lower P*3 Colligative Properties
6
Liquid Mixtures
35% H2O, 30% Acetone, MIBK balance => separates how?Use Ternary Phase DiagramConcise Explanation
7
Energy Balance
Intro
2 ton truck @ 65mph
=> ? Ek & Ep
Ek = 1/2*m*u2
Ep = m*g*h
Several Key Interrelations
7
Energy Balance
Closed Systems
Given a Closed System, Where do you start? ΔU + ΔEk + ΔEp = Q - WExplanation of the Equation
7
Energy Balance
Open Systems
Given a Open System, Where do you start?ΔH + ΔEk + Δ Ep = Q - WsExplanation of the Equation
7
Energy Balance
Mechanical Systems
Given a Mechanical System, Where do you start?(m-dot * ΔP / ρ + ΔEk + ΔEp = WsExplanation of the Equation
8
Energy Balance
Change in T or P
Cu is raised from 25C to 400C => ? ΔH
ΔH =
Integral(Cp) | T1 to T2
Enthalpy Changes
8
Energy Balance
Changes of State
Cu melts => ΔHΔH tablePaths for Finding Energies
9
Energy Balance
Reactive Systems
Given reaction conditions => ΔHΔ Hrxn =
Σ(vi*ΔHfi)products
- Σ(vi*Δ Hfi)reactants
Examples Using All Materials in Course
7-9
Energy Balance
Review
Energy Balance problemWrite E-bal, ?determine Δ H?Review



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