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Session 3.2.
Cc tin chca HYSYS
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Revise
Cut Phnmole
C1 0.0724
C2 0.1288
C3 0.2765
i-C4 0.1895
n-C4 0.1145
i-C5 0.0648
n-C5 0.0548
C6 0.0329
C7+ 0.0658
Nhp cc thnh phn ca dng
Molar Flow: 100 kgmol/h
Name: Feed
Bn tham s cn khai bo cho dng nguyn liu l:Composition
Flowrate
Hai trong s cc tham s sau:TemperaturePressure
Vapor/phase fraction
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Tnh ton Flash
Tnh ton thng s th 3: Nhp thnh phn ca dng Nhp hai trong s cc thng s l nhit
, p sut hoc phn hi Tnh ton nhit hay p sut im
sng(dew point): t, P Phn hi (Vapour Fraction) = 1.0 Nhp p sut hay nhit ca dng tnh ton nhit im bt hay p
sut im bt(bubble point) Phn hi l 0.0
Nhp p sut hay nhit ca dngCh mu ch ca cc gi tr trong Hysys
Mu xanh: do ngi nhp,
Mu en do chng trnh t tnh ton,
Mu : nhng gi tr do Hysys mc nh v c th
thay i bi ngi dng
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Tnh ton Flash
P = 4000 kPa, nhit im bt (bubble point) = ?
P = 4000 kPa, nhit im sng (dew point) = ?
P = 4000 kPa, T = 1000C, phn hi (vapour fraction)= ?
Dng chut resize li ca s xem tnh cht ca dng
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Cc tin ch km theo
Phng php Thc hin
S dng thanh
Menu
T mc Tools trn thanh Menu, la chn
UtilitiesHocnCtrl U.Cashinthcc tinch sxuthin.
T ca s hin th
tnh chtdng
1.Mcashinthtnh chtdng.
2.Trn mcAttachments, kch vo mcUtilities.3.Kch vo nt Create.Cashinthcc tinch sxuthin.
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Tin ch Envelope
Mc ch:kim tra cc mi quan h gia cc i lng cng vi lng khuch (P, V, T, H, S). Tin ch Envelope c th a rac th ca cc mi quan h sau:
p sut nhit (P-T)
p sut th tch (P-V)p sut Enthalpy (P-H)p sut Entropy (P-S)Nhit Th tch (P-V)Nhit Enthalpy (T-H)Nhit Entropy (T-S)
Yu cu: s dng c tin ch ny, yu cu ti thiu l phi bitc thnh phn ca dng, k c khi dng ch c mt thnh phn
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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others
Tin ch Envelope
Cch truy cp vo tin ch:Utilities (Ctrl+U):La chn Envelope. Kchvo nt Add Utility. Ca s hin th tin chEnvelope xut hin. Chn dng Feed trong
mc Select StreamMc Design s ch ra cc gi tr ti hn vcc gi tr ln nht cho envelope.
Nhit v p sut ti hn Tc, Pc (cr i t ical temperature and pressure)cho dng Feed l bao nhiu?
Nhit v p sut ln nht (Cr icondentherm and Cr icon denbar)cho dng Feed l bao nhiu?
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Gin P-V cho h mt cu t
Nhit ti hnl nhit mti khi tng p sut ln dngkh khng th b ha lng
Ti im ti hn C(Tc, Pc), kh rtm c nhng cha phi l lngMi cht c mt im ti hn ring.T Tc, Pcta c th tnh c nhit rt gn Trv p sut rt gn Pr theocng thc:
C
LV
R
C
LV
R
P
PP
TTT
Vi mt cht tinh khit
C: im ti hnT: im 3 pha
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Gin P-V cho h mt cu t
T = constant
Liquid & gas
Gas
G (Bubble point): im mti lng kh cn nhrt nh v bt u chuynsang trng thi lng
F (Dew point): im m ti lng lng cn nh rtnh v bt u chuynsang trng thi kh
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Gin P-V cho h hai cu t
Khi nim v im ti hndng cho h mt cu tkhng p dng c vih nhiu cu t. Trong hhai cu t, pha lng v kh
c th cng tn ti ti psut v nhit trn imti hn.Vi h nhiu cu t, imti hn c nh ngha lim m ti tt c cc
tnh cht ca lng v kh lging nhau
Liquid
Gas
Pm
Tm
Pm: cricondenbar
Tm: cricondentherm
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Tin ch Envelope
Chuyn sang mcPerformancehin th envelope.
Kch vo mcTablehinth
dliuenvelope dngbng.(Cc gi trdng s c th ccopy t Hysys sang MicrosoftExcel bng vic s dng lnhcopy, Ctrl C, v sau s dnglnhdn, Ctrl V.
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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others
Nhit im bt (bubble point) 4000 kPa?
Nhit im sng (dew point) 4000 kPa?
Nhit ca dng Feed vi 50% lng cht phahi (50% quality) 5000 kPa?
Nhit kt tinh nc (hydrate) 5000 kPa?
Tin ch Envelope
Phng php ni suy???So snh kt qu bubble point v dew point vikt qu tnh ton phn trc
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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others
Tin ch Property TableMc ch: Tin ch cabng tnh cht l cho phpchng ta kim tra cc ditnh cht trn mt khongiukintheo cdngbng
v dng th. Tin ch nys tnh ton cc bin phthuc nu ngi s dngcho bitcc khonghay ccgi trcabinclp.
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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others
Tin ch Property Table1. Utilities (Ctrl+U):chn Property Table>Add2. Kch vo nt Select Stream v la chn dng
Feed>OK
3. The first Independent Variable: Pressure
Thay i phng thc bin i p sut l State,tc l cc gi tr c cho trc.
Trong khung nhp cc gi tr 2500, 5000, 7500, v9000 kPa.
4. The second Independent Variable: Temperature
Thay i bin di v bin trn ln lt l 00C(320F) v 1000C (2120F). S lng cc im tngmc nh l 10 im.
4. Chuyn sang mc Dep. Prop>Add v chn lnlt cc tnh cht sau: Mass Density, ThermalConductivity, Specific Gravity
5. Kch vo nt Caculate to ra bng tnh cht.6. Kim tra kt qu ca bng tnh cht theo c dng
th v dng bng trong mc Performance.
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Phn tch kt qu dng
Kch p vo dng Feed, ko bng rng ra cho n khi nhn ctt c cc phaCc thng tin chi tit ca dng c th thy mc Conditions,Properties
M Workbook bng biu tng c trn thanh Toolbar. RC>Setup
Material stream>add>Stream Rename thnh Other props Variable: delete ht cc bin mc nh, thm Cp/Cv, Nhit bay hi
khi lng (Mass Heat of Vapourization), Enthalpy phn t gamth tch (Molar Enthalpy)
ng ca s ny khi chng ta hon thnh v quay tr liWorkbook.
Workbook by gi s bao gm c mc Other Prop.Mc ny ch ra cc gi tr ca Cp/Cv, Nhit bay hi khi lng, vEnthalpy phn t gam th tch.
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Cp/Cv
Nhit dung ring(Specific heat)l lng nhit cn thit unnng mt mol cht ln 1 Nhit dung ring ng tch CvNhit dung ring ng p Cp
Cp/Cv, k, specific heat ratio
k = Enthalpy H/Internal energy UEnthalpy H = Cp * TInternal energy U = Cv * TSpecific heat ratio(k) k = Cp/Cv
Specific heat and Gas constantRR = Cp - Cv
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Mass Heat of Vapourization
Nhit bay hi khi lng (Mass Heat ofVapourization) l lng nhit cn thit chuynha 1g lng thnh kh
VD: Nhit bay hi khi lng ca nc l: 2260J/g
Bit c i lng ny ta c th tnh ton xem cnbao nhiu lng nhit ha hi hon ton mtkhi lng nc bit trc
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Molar Enthalpy Hm
Molar Enthalpy l lng nhit chuyn ha trongphn ng trn mt mol
n
CHm
C: specific heat
AQdU
)()( 1122 pVUpVUQp
12 HH
Nguyn l 1:
T suy ra:
U: ni nng ca hQ: nhit sinh ra khithc hin mt cng A
H: th nng ca hH: bin thinEnthalpy: din t s binthin th nng nhit ngca h, thng c dng tnh cng c chca mt"h nhit ng kn" di mt
p sut khng i.
U, H: hm trng thiQ, A: hm qu trnh
http://vi.wikipedia.org/wiki/C%C3%B4nghttp://vi.wikipedia.org/wiki/C%C3%B4ng8/11/2019 s3 1 Bat Dau Voi Hysys 2
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In d liu ca dngv ca Workbook
Trong Hysys chng ta c kh nng in cc d liu ca dng, cc qu trnhhot ng, v cc Workbook.
In cc d liu trong Workbook
1. M Workbook
2. Kch chut phi trn thanh tiu ca Workbook.3. La chn Print Datasheet. Ca s ta la chn cc khi d liu
cn in s xut hin.
4. T danh sch chng ta c th in, hoc xem trc bn in ca bt kd liu no.
In mt d liu dng ring bit in d liu cho mt dng ring bit, chng ta phi nhp chut philn thanh tiu ca dng cn in trong Workbook, cc bc cn lithc hin nh i vi vic in Workbook trnh by trn.
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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others
Task 3.2.1
Nhm:
c v dch ti liu 3.2.1. Utilities
Yu cu: mi tnh cht cn phi a ra cnh ngha, mc ch cc thng s m chngtrnh a ra (Wh-question: what, how)
Hn np:
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Learning outcome in
session 3.2
Thnh tho cc thao tc thm dng, nhpthnh phn ca dng
Hiu c cch thm mt Utilities, thc hnhmt s cc tin ch tnh ton tnh cht chodng: phase envelope, table property
n li mt s kin thc c s Ha L Phn tch v la chn in kt qu ca dng v
workbook
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Homework
Hy thc hin tnh ton flash P-T cho dng GasWell2. t p sut l 7500 kPav nhit l 100C. Phn hi l bao nhiu?Thc hin mt tnh ton im sng cho dng GasWell2. t p sut l 7500kPa. Nhit im sng l bao nhiu?
Thc hin mt tnh ton im bt cho dng GasWell2. Nhp p sut l 7500kPa. Nhit im bt l bao nhiu?S dng tin ch Envelope xc nh Tc, Pc, Tr, Pr cho dng GasWell2. T tnh h s Z ca dng (h s nn dc trng cho kh thc). Hin th d liuenvelope di dng bng trong Excel.
Tr, Pr (nhit v p sut rt gn, reduced)Tr = T lm vic/TcPr = P lm vic/Pc
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Homework
SdngEnvelopePhasetm cc imsau:imtihncho GasWell1:p suttihncho GasWell1:Nhitimbtcho GasWell3 6000 kPa:Nhitimsngcho GasWell1 4000 kPa:NhitcaGasWell1 vi50% lngchtpha hi8000 kPa:Nhitkttinh nccho GasWell2 7500 kPa
SdngWorkbook tm cc gi trsau:Nhitimbtcho GasWell3 6000 kPaNhitimsngcho GasWell1 4000 kPaNhitcaGasWell1 vi50% lngchtpha hi8000 kPaSdngtinch HydrateFormationtm nhitkttinh nccho GasWell1 v GasWell2
Dng p sut,kPa (psia) Nhitkttinh nc
GasWell1 5000 (725) 21.1253
GasWell1 7500 (1090) 23.0292
GasWell2 5000 (725) 20.6811
GasWell2 7500 (1090) 22.6107