DOUBLE PIPE HEAT EXCHANGER (COUN

Fluida Panas Fluida Dingin

h (cm) t (s) V (ml) Q (ml/s) Qrat (ml/s) h (cm) t (s) V (ml) Q (ml/s)
1.5 6.24 470 75.3205128205 1.3 5.03 250 49.7017892644
5.49 410 74.6812386157 75.8677207903 6.33 320 50.5529225908
5.67 440 77.6014109347 6.68 350 52.3952095808

Fluida Dingin Fluida Panas

h (cm) Q (ml/menit) Tci (c ) Tco (c) h (cm) Q (ml/menit) Thi (c ) Tho (c) t (menit)
2.15 80 30 30 -1.85 90 50 50 0
2.15 80 31 33 -1.85 90 50 44 4
2.15 80 31 35 -1.85 90 50 46 8
2.15 80 31 34 -1.85 90 50 48 12
2.15 80 31 34 -1.85 90 50 48 16
2.15 80 31 35 -1.85 90 50 47 20

Keterangan
Temperatur Cold 30 c
Temperatur Hot 50 c

Sehingga persamaan garis untuk :

a. Fluida dingin
y = 18.96x + 39.09
pada Q = 80 ml/s
dh 2.15
b. Fluida Panas
y = 11.33x + 111
pada Q = 90 ml/s
dh -1.85
CHANGER (COUNTER CURRENT)
Fluida Dingin Fluida Panas
Qrat (ml/s) h (cm) Qrat h (cm) Qrat
1.5 75.86772079 1 50.88330715
50.8833071454

GRAFIK h vs Q (FLUIDA DINGIN)

80
f(x) = + 75.8677207903
60 R = 0

40 Column M
Q (ml/s) Linear (Column M)
20

0
1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3

h (cm)

GRAFIK h vs Q (FLUIDA PANAS)

60
50
f(x) = + 50.8833071454
40 R = 0
30 Column O
Q (ml/s) 20 Linear (Column O)
10
0
0.8 1 1.2 1.4 1.6 1.8 2
 f(x) = + 50.8833071454
40 R = 0
30 Column O
Q (ml/s) 20 Linear (Column O)
10
0
0.8 1 1.2 1.4 1.6 1.8 2

h (cm)
Nilai T lmtd

t fluida dingin fluida panas TLMTD

(Sekon) Tin (0C) Tout (0C) Tin (0C) Tout (0C) 0 (0C) (K)
0 34 34 53 53 0 273
5.31 34 38.5 53 51 15.7168754878 288.7168754878
10.66 34 38.5 53 51 15.7168754878 288.7168754878
16.01 34 38 53 51 15.9791449208 288.9791449208

Nilai Cp, , dan k untuk aliran Fluida Dingin

Qc (ml/s) t (Sekon) Tc av (0C) (kg/m) Cp (kj/kg.K) (kg/m.s) k (W/m.K)

31.62 0
31.62 5.31 36.25 993.53625 4.181 0.0007051125 0.6255806878
31.62 10.66 36.25 993.53625 4.181 0.0007051125 0.6255806878
31.62 16.01 36 993.622 4.181 0.0007085 0.6251904762

Nilai Cp, , dan k untuk aliran Fluida Panas

Qh (ml/s) t (menit) Th av (0C) (kg/m) Cp (kj/kg.K) (kg/m.s) k (W/m.K)
39.35 0
39.35 5.31 52 987.104 4.1838 0.0005315 0.6413045045
39.35 10.66 52 987.104 4.1838 0.0005315 0.6413045045
39.35 16.01 52 987.104 4.1838 0.0005315 0.6413045045
Nilai qc dan qh

t (menit) qc (kJ/s) qh (kJ/s)

0
5.31 0.5910691115 0.3250188578
10.66 0.5910691115 0.3250188578
16.01 0.5254401115 0.3250188578

Nilai Uo (exp), Ui (exp) dan U (exp)

Keterangan : perhitungan nilai A ada didata laporan.
t Uo(exp) Ui(exp) U(exp)
T lmtd (K)
(menit) (W/m2.K) (W/m2.K) (W/m2.K)
0 273
5.31 288.7168754878 5.3669837466 12.2553244903 17.6223082369
10.66 288.7168754878 5.3669837466 12.2553244903 17.6223082369
16.01 288.9791449208 5.3621128214 10.8846743731 16.2467871946

Nilai NREi dan NREo

t (menit) NREi NREo

0
5.31 7131.1504133445 2787.0130784444
10.66 7131.1504133445 2787.0130784444
16.01 7097.6672893957 2787.0130784444
Nilai Npri dan Npro

t (menit) Npri Npro

0
5.31 4.7125421548 3.4674474986
10.66 4.7125421548 3.4674474986
16.01 4.7381375961 3.4674474986

Nilai hi dan ho

t (menit) hi (W/m2.K) ho (W/m2.K)

0
5.31 1371.4227216424 78.4373281708
10.66 1371.4227216424 78.4373281708
16.01 1367.8595035796 78.4373281708

Nilai Konduktifitas Termal untuk Carbon Steel 1%

Keterangan : nilai kcc dan kch diperoleh dari App A.2-10 Geankoplish
t (menit) Tc av (0C) kcc (W/m.K) Th av (C) kch (w/m.K)
0
5.31 36.25 0.6259 52 0.6459
10.66 36.25 0.6259 52 0.6459
16.01 36 0.6255 52 0.6459
Nilai U

t hi 1/hi ho 1/ho
Xw/kcc Xw/kch
(menit) (W/m2.K) (m2.K/W) (W/m2.K) (m2.K/W)
0
5.31 1371.4227216424 0.0007291698 78.4373 0.0127490319 0.0108643553 0.0105279455
10.66 1371.4227216424 0.0007291698 78.4373281708 0.0127490319 0.0108643553 0.0105279455
16.01 1367.8595035796 0.0007310692 78.4373281708 0.0127490319 0.010871303 0.0105279455

Nilai Ui (theo), Uo (theo) dan Utot (theo)

t Ui (theo) Uo (theo) Utot (theo)

(menit) (w/m2.K) (w/m2.K) (w/m2.K)
0
5.31 48.6438648221 78.4500158701 127.0938806922
10.66 48.6438648221 78.4500158701 127.0938806922
16.01 48.6247378644 78.4500182552 127.0747561195

Tabel Efisiensi dan Efektifitas HE dengan aliran counter current

t (menit) (%) rata-rata rata-rata

0
5.31 13.8655835678 13.1084099162
13.5054623943 13.1084099162
10.66 13.8655835678 13.1084099162
16.01 12.7852200474 13.1084099162
Nilai Rd

t Ud Uc Rd Rd
(menit) (W/m2.K) (W/m2.K) (m2.K/W) Rata -rata
0
5.31 17.6223082369 74.1938741551 0.0432680535
10.66 17.6223082369 74.1938741551 0.0432680535 0.0448688789
16.01 16.2467871946 74.1834196263 0.0480705296

Nilai P Fluida Dingin

t f fc V Ft P
(menit)
0
5.31 0.0409239049 0.0006089397 0.0569288659 0.005809068 0.0064180076
10.66 0.0409239049 0.0006089397 0.0569288659 0.005809068 0.0064180076
16.01 0.0409356261 0.0006091141 0.0569288659 0.005809068 0.0064181821

Nilai P Fluida Panas

t f fh V Ft P
(menit)
0
5.31 0.0444329068 0.000017984 0.0073850878 5.5652573E-006 2.354929777E-005
10.66 0.0444329068 0.000017984 0.0073850878 5.5652573E-006 2.354929777E-005
16.01 0.0444329068 0.000017984 0.0073850878 5.5652573E-006 2.354929777E-005

t Ptot
(menit) (psi)
0
5.31 0.0064415569
10.66 0.0064415569
16.01 0.0064417314
 Gc (kg/m.s)

56.5608919666
56.5608919666
56.5657736168

Gh (kg/m.s)

7.2898496614
7.2898496614
7.2898496614
 Diketahui
di/dL di/do do/dL do/di

0.890525611 0.79640719 1.11817877 1.2556391

0.890525611 0.79640719 1.11817877 1.2556391
0.890525611 0.79640719 1.11817877 1.2556391
di = 1,049 in = 0,0266 m
do = 1,315 in = 0,0334 m
 0.055 1589.2838232751 0.000763
16.710597 0.144033
0.0005783 0.002117
0.0154426117 0.042245
3.2697137941518E-005

0.0168909245
2.91125847760068E-005
0.8970681839

16591.182
0.0079591846