heater 1 tipe HE Shell n Tubefungsi untuk memanaskan aliran dari 313,5 ke 413 K
423.15 K 423.15 K 1. Delta T LMTDTh 423.15Tc 313.5
109.65delta T LMTD41.80989 K
313.5 K 413 K 2. Neraca Energialiran dingin Fin 103468.46043
40.5 Cpin 7241.9149999150 Q 749309.79563
aliran Panas delta H 2745.4laju steam 10439.102685
3. T LMTD koreksiR 0S 0.9074327405Ft 1delta LMTD75.257799899
4. average temperaturHot Cold
Hight 302 283.73Low 302 104.63Tav 302 Ftav 194.18 F
5. luas permukaan perpanmiu campu 8.110007138Ud 100--500Q 28659512.513delta T LM 75.257799899A 1804.7280951
6. dimensi designtube
asumsiOD 1
Nt A/(a"L) pitch 1.25lenght 16
Nt tabel 432 Nt 430.84608841Ud correction 199.46578167 BWG 16
tebakan Ud benar passes 4
7. perhitungan shell n tube
shella. Flow areC'flow area 0.4583333333
mass velocity2.204623
WGa
Reamiu steam 141.80464406
0.14180464410.3431672386
Dea 0.990.0825
Rea 12071.579928
jH fig 2860
c Tav34.49337 J/mol K
c 0.4577000478k 0.029329803(c miu/k )^(1/3)2.100565
ho/psio 25.888804543
tube Wall temptw255.7572 F
miu pada wall131.5048 mkro poise0.131505 cP0.318242 lb/ft h
psi o 1.0106128509corrected ho26.16356
clean over all
Uc 12.773931461Ud 199.46578167Rd0.073271
pressure dropshellRea 12071.579928f 0.002s 1.002004008De 2.75N+1 19.2delta P 0.0018316328
K F 423.15423.15 302 302 0
413 363.25 104.63 283.73 179.110.15 197.37 18.27 179.1
delta T LMTD75.2578 F
Cp 276987.909096Kg/jam Fout 103468.5 Kg/jam Qin QoutJ/kg K Cpout 284229.8 j/KgK Fin Cpin delta T Fout Cpout delta TKJ/jam Qout 29408822 Kj/Kg 28659512.512771 28659512.51
Qou-Qin 28659513 Kj/jam m 10439.10269Kj/KgKg/jam
F
5. luas permukaan perpancP aquos >2 cPsay 200 1 KJ 0.947817 BtuKj/jam 27163973.1713 Btu/hFft2 karena A>200ft2maka dipilih shell n tube
shellin ID 33 in tabel 9in triangular B 10 inft passes 2
tabel 9
7. perhitungan shell n tube
tube4/L 0.25 in a. Flow areaft2 a' 0.594
flow area 0.444310029aliran panassteam b. Mass velocity23014.28 lb/h w 228108.908450212.98 lb/h ft2 Gt 513400.3145
Retmikro pois yaws miu stream 8.110007138cP 19.62621727lb/ft h D 0.87in fig 28 0.0725ft Ret 1896.52047
L/D220.6896551724
jH fig 24423.15 K 4
1916.299 j/Kg Kbtu/lb F c 0.741976393W/m K 0.0169464468 btu ft/hFft2 k 0.067550665
(c miu/k)^(1/3) 5.996056089hi/psii
22.3469008216
hio/psi19.4418037148
398.3725 K
miu pada walll shell1.361145 cP
psi i 1.283856127corrected hio 24.96047883
btu/hft2F
tubes 0.7246676126
fig 29 Ret 1896.5204695238f 0.00045 fig 26
ft delta Pt 2.155961637 psiV^2/2g' 0.03 fig 27
psi delta Pr 0.6623726405 psidelta P total2.818334 Psi
Fout Cpout delta T
untuk menghitung Nt butuh data a"a" 0.2618 ft/ft2 tabel 10 kernuntuk baffle adaBmax = ID shell 33 dipilih 10 inBmin = ID shell*0, 6.6
persamaan 11.3
in2 tabel 10ft2
lb/hlb/h ft2
cPlb/ft hin tabel 10ft
pati Tctav 363.25 K Mrfraksi Cp k Pc
btu/lb h butanol 0.667791 2320.332 0.021841 lamdabtu ft/hFft2air 0.152881 4184.6 0.668622 Tr
pati 0.171991 5200.955 0.00061 kptsa 0.004697 1919.94 0.000226impuritis 0.00264 5200.955 0.00061total 3106.507 j/kg K 0.116912 W/m K
3.293971 lb/ft h
437.2101 K pTSA Tc 441.8914162 Mr 190.22
3816.706832 kpa Pc 4425.8543.120501615 lamda 3.068978
0.8308362501 Tr 0.8220340.0006102947 W/m K k 0.000226 w/mK
cooler 1 tipe HE Shell n Tubefungsi untuk mendinginkan aliran dari 413 ke 343 K
333 K 303 K 1. Delta T LMTDTh 413Tc 333
80delta T LMTD
57.7078 K
413 K 343 K 2. Neraca Energialiran dingFin 29427.68996
Cpin 293825.5643Q 8646607.61
aliran Panadelta H -125.4laju steam 46705.93164
3. T LMTD koreksiR 2.333333333S 0.272727273Ft 0.880794695delta LMTD 91.49170592
4. average temperaturHot Cold
Hight 283.73 139.73Low 157.73 85.73Tav 220.73 Ftav 112.73 F
5. luas permukaan perpanmiu campu 0.914253447
Ud koreksi Ud 50-12569.64011 Q 5856923.828
delta T LM 91.49170592A 866.7909579
6. dimensi designtube
asumsiOD 1pitch 1.25lenght 16Nt 206.9306145BWG 16passes 2
7. perhitungan shell n tube
shella. Flow areC'flow area 0.322916667
mass velocity
WGa
Reamiu steam
0.9142534472.212493342
Dea 0.990.0825
Rea 7491.428543
jH fig 2850
c TavCp
c 0.687333496k 77.63920221(c miu/k )^(1/3)0.141304
ho/psio 46159.21274
tube Wall temptw219.4451 F
miu pada wall0.012094 0.9890530.016516 0.002966 0.935193 cP0.962108 0.95 2.263168 lb/ft h0.009281 0.989053 psi o 0.9968346350.935193 corrected ho
46013.1
clean over all
Uc 549.5061931Ud 250Rd
-0.00218
pressure dropshellRea 7491.428543f 0.002s 0.991357761De 1.9375N+1 19.2delta P 0.030046405
K F 423.15343 283.73 157.73 126303 139.73 85.73 54
40 144 72 72delta T LMTD103.874043 F
Kg/jam Fout 29427.69 Kg/jamJ/kg K Cpout 94797.9194 j/KgKKJ/jam Qout 2789683.78 Kj/Kg
Qou-Qin -5856923.8 Kj/jamKj/KgKg/jam
F
Tav 220.73fraksi denitas
pati 0.012094 1686.7825. luas permukaan perpan ptsa 0.016516 1388.889
cP medium organic BG 0.962108 990say 70 impuritis 0.009281 1388.889Kj/jam 5551292.839 Btu/h total 1008.718Fft2 karena A>200maka dipilih shell n tube
shell untuk menghitung Nt butuh data a"in ID 23.25 23.25 tabel 9 a"in squar B 10 in untuk baffle adaft passes 1 Bmax
Bmin
tabel 9
7. perhitungan shell n tube
tube4/L 0.25 in a. Flow areaft2 a' 0.594 in2
flow area 0.426794 ft2aliran panas
b. Mass velocity64875.86 lb/h w 102969 lb/h200905.9 lb/h ft2 Gt 241261.3 lb/h ft2
Ret tav 318miu stream 0.605111 cP
cP 1.464369 lb/ft hlb/ft h D 0.87 inin fig 28 0.0725 ftft Ret 11944.69
L/D220.6896552
jH fig 24377.85 K 80
2877.728 j/Kg Kbtu/lb F c 0.997872 btu/lb hW/m K 539btu ft/hFft2 k 0.3644 btu ft/hFft2
(c miu/k)^(1/3) 1.588726hi/psii638.8214266
hio/psi555.7746411
318.2598 K
miu pada walll shell0.602216135 cP 1.457363
psi i 1.000672corrected hio 556.1479
btu/hft2F
tubes 1.002004008
fig 29 Ret 11944.69393f 0.0002 fig 26
ft delta Pt 0.098171539 psiV^2/2g' 0.042 fig 27
psi delta Pr 0.335328 psidelta P total
0.4335 Psi
104.85 377.85F pati Tc 437.2101 Kviskositas Cp k Mr 1620.018697 5754.207 128.9652 Pc 3816.707 kpa0.000961 2022.442 106.6236 lamda 3.120502
0.95 2828.501 76.00129 Tr 0.864230.000961 5754.207 128.9652 k 128.9652 W/m K0.914253 2877.728 77.6392
untuk menghitung Nt butuh data a"0.2618 ft/ft2 tabel 10 kern
untuk baffle ada= ID shell 23.25 dipilih 10 in= ID shell/5 4.65persamaan 11.3
tabel 10
tabel 10
75.20201 4177.889 J/Kg Kbtu ft/hFft2 0.63068 W/m K
lb/ft h
pTSA Tc 441.8914 BG Tc 441.8914Mr 190.22 Mr 263Pc 4425.854 Pc 4425.854lamda 3.068978 lamda 3.60864Tr 0.855074 Tr 0.855074k 106.6236 w/mK k 76.00129
