laporan fbd kel 4 - pengamatan, perhitungan

LAMPIRAN A

DATA PENGAMATAN

A.1 Data Alat Fluidized Bed Dryer

Diameter bawah = 17 cm

Diameter atas = 30 cm

Berat Fluidized Bed Dryer kosong = 9,5 kg

A.2 Data Pengukuran Densitas Beras

Volume piknometer = 25 ml

Berat piknometer kosong = 33,1205 gr

Berat piknometer + air = 58,4363 gr

Berat piknometer + air + beras = 63,683 gr

Temperatur air = 25,5 °C

A.2 Data Pengamatan Run 1

Berat beras = 0,75 kg

Suhu unggun awal = 26°C

Tinggi unggun awal = 4 cm

Berat Fluidized Bed Dryer + Beras basah = 10,42 kg

Waktu

(menit)

Tinggi

Unggun

(cm)

Udara Masuk Udara Keluar

Temperatur (°C) Laju

(m/s)


(m/s)Basah Kering Inlet Basah Kering Exhaust

0 3.5 3.5 24 30 30.2 1.6 28 39 32

10 6.8 6.8 23.5 29.5 45.5 3.2 26 40 34

20 7 7 23.5 29 58.5 3.6 26.5 45 36

30 7.15 7.15 24 29 60.6 3.9 28 49 43

40 7.2 7 23.5 29.5 63.8 4.2 29 51 46

50 76.9 7.2 23.5 29.5 67.1 4.6 29 54 48

60 6 5 25 31 68.9 4.9 28 50 51

Waktu Volume Suhu Kondensat

(menit) Kondensat (ml) (°C)

0 0

56.5

10 55

20 50

30 50

40 60

50 45

60 30

Berat Fluidized Bed Dryer + Beras kering = 10,20 kg

Suhu unggun akhir = 48°C




Tinggi unggun awal = 3,5 cm


Waktu

(menit)

Tinggi

Unggun

(cm)



(m/s)



0 5.7 23.5 28 51.5 1.3 26 33 40 1.6

10 6.5 23 27 45.2 1.5 25.5 33 42 1.8

20 8.4 23 28 48.2 2.3 26 32 44 1.9

30 8.4 24 28 45.5 2.6 26.5 35 42 1.6

40 8.4 25 28.5 46.7 3.1 26.5 34 42 1.7

50 8 24 27.5 46.8 4.6 27 34 42 1.8

Waktu

(menit)

Volume

Kondensat (ml)

Suhu Kondensat

(°C)

0 0 56.5

10 55

20 50

30 50

40 60

50 45






Tinggi unggun awal = 1,2 cm


Waktu

(menit)

Tinggi

Unggun

(cm)



(m/s)



0 2.4 25 29 45.2 2.5 30 48 40 1.9

10 3.6 24 30 48.2 3.4 30 52 44 1.8

20 4 25 32 46.7 3.75 29 54 42 1.8

30 3.5 25 31 49.9 3.8 29 54 48 2

Waktu

(menit)

Volume

Kondensat (ml)

Suhu Kondensat

(°C)

0 0

58.510 60

20 55

30 50



LAMPIRAN B

PENGOLAHAN DATA

B.1 Rumus yang Digunakan

B.2 Perhitungan Densitas Beras

Densitasberas=(63,683−58,4363 )gr

25ml=0,2098

grml

=2098kg

m3

B.3 Perhitungan Luas Area Fluidized Bed Dryer

Luas=πr 2

Luas=3,14× (0,085m)2

Luas=0 ,022687m2

B.4 Perhitungan Run 1

B.4.1 Perhitungan RH, Enthalpy (H), Densitas (ρ) dan Berat Udara (y0)

Waktu

(menit)

Udara Masuk

T Basah

(°C)

T Kering

(°C)

RH

(%)

Enthalpy, H1

(kJ/kg)

ρ udara

(kg/m3)

y0 (kg

air/kg UK)

0 24 30 61.4 72.2 1.153 0.0164

10 23.5 29.5 61.1 70.2 1.155 0.0159

20 23.5 29 63.7 70.2 1.157 0.0161

30 24 29 66.7 72.2 1.157 0.0168

40 23.5 29.5 61.1 70.2 1.155 0.0159

50 23.5 29.5 61.1 70.2 1.155 0.0159

60 25 31 62.1 76.3 1.148 0.0176

Waktu

(menit)

Udara Keluar

T Basah

(°C)

T Kering

(°C)

RH

(%)

Enthalpy, H2

(kJ/kg)

ρ udara

(kg/m3)

y (kg

air/kg UK)

0 28 39 44.3 89.7 1.118 0.0196

10 26 40 33.7 80.6 1.117 0.0181

20 26.5 45 24.7 83.7 1.1 0.0189

30 28 49 21.1 89.7 1.086 0.0198

40 29 51 20.4 94.6 1.078 0.0187

50 29 54 16.4 94.6 1.069 0.0191

60 28 50 19.6 89.7 1.082 0.0235

B.4.2 Perhitungan Porositas (Ɛ), Perbedaan Tekanan (ΔP), dan Energi Dalam (U)

Waktu

(menit)

Tinggi

Unggun, L (m)

Volume

(m3)

Porositas,

Ɛ

Perbedaan

Tekanan, ΔPLog ΔP

0 0.035 0.00079 0.3 503.60495 2.70209

10 0.068 0.00154 -0.36 1900.95451 3.27897

20 0.07 0.00159 -0.4 2014.41979 3.30415

30 0.0715 0.00162 -0.43 2101.67706 3.32257

40 0.07 0.00159 -0.4 2014.41979 3.30415

50 0.072 0.00163 -0.44 2131.17392 3.32862

60 0.05 0.00113 0 1027.76520 3.01189

Waktu

(menit)

Luas Permukaan

(m2)

Laju Alir,

v (m/s)

Debit, Q

(liter/s)

U

(kg.jam)Log U

0 0.022687 1.6 36.2984 1600 3.20412

10 0.022687 3.2 72.5968 3200 3.50515

20 0.022687 3.6 81.6714 3600 3.55630

30 0.022687 3.9 88.47735 3900 3.59106

40 0.022687 4.2 95.2833 4200 3.62325

50 0.022687 4.6 104.3579 4600 3.66276

60 0.022687 4.9 111.16385 4900 3.69020

B.4.3 Kurva Antara Log U dan Log ΔP

3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.800.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

log U

log

ΔP

B.4.4 Perhitungan Penyerapan Panas

Waktu

(menit)

T Kering

(°C)

Debit, Q

(m3/menit)

y (kg

air/kg

UK)

y0 (kg

air/kg

UK)

Gu

(kg/menit)F (kg)

0 30 2.17790 0.0196 0.0164 1.26965 0.00000

10 29.5 4.35581 0.0181 0.0159 2.53929 201.11184

20 29 4.90028 0.0189 0.0161 2.85670 575.91117

30 29 5.30864 0.0198 0.0168 3.09476 1002.70248

40 29.5 5.71700 0.0187 0.0159 3.33282 1343.79273

50 29.5 6.26147 0.0191 0.0159 3.65023 2102.53284

60 31 6.66983 0.0235 0.0176 3.88829 4955.23569

m1 (kg/

menit)

m2 (kg/

menit)

m3 (kg/

menit)Hg Hf Hfg Q1 (kJ/kg)

0.00406 3.06 -3.0559 2555.55 125.734 2429.816 15255.21996

0.00559 3.06 -3.0544 2554.64 123.644 2430.996 15256.04616

0.00800 3.06 -3.0520 2553.74 121.544 2432.196 15256.96416

0.00928 3.06 -3.0507 2553.74 121.544 2432.196 15256.96416

0.00933 3.06 -3.0507 2554.64 123.644 2430.996 15256.04616

0.01168 3.06 -3.0483 2554.64 123.644 2430.996 15256.04616

0.02294 3.06 -3.0371 2417.27 129.91 2287.36 14396.16780

B.4.5 Perhitungan Efisiensi Steam

Waktu

(menit)


Q

(m3/mnt)

Densitas,

ρ

(kg/ m3)

Laju Alir,

v (kg/jam)

Q

(m3/mnt)

Densitas,

ρ

(kg/ m3)

Laju Alir,

v (kg/jam)

0 2.17790 1.153 150.66740 6.39773 1.118 429.16000

10 4.35581 1.155 301.85749 6.12549 1.117 410.53034

20 4.90028 1.157 340.17772 5.71712 1.1 377.33018

30 5.30864 1.157 368.52586 5.85325 1.086 381.39751

40 5.71700 1.155 396.18796 6.12549 1.078 396.19669

50 6.26147 1.155 433.92015 6.12549 1.069 392.88893

60 6.66983 1.148 459.41796 6.94222 1.082 450.68905

Waktu

(menit)

U1

(kg/jam)

U2

(kg/jam)

Enthalpy,

H1

(kJ/kg)

Enthalpy,

H2

(kJ/kg)

k1 Q2 (kJ/kg)

0 150.6674 429.16000 72.2 89.7 2602.9 364554.70661

10 301.8575 410.53034 70.2 80.6 2602.9 773806.52289

20 340.1777 377.33018 70.2 83.7 2602.9 877746.51431

30 368.5259 381.39751 72.2 89.7 2602.9 951632.16673

40 396.188 396.19669 70.2 94.6 2602.9 1021569.83244

50 433.9201 392.88893 70.2 94.6 2602.9 1122744.65551

60 459.418 450.68905 76.3 89.7 2602.9 1190445.78852

Waktu (menit) Q1 (kJ/kg) Q2 (kJ/kg) Efisiensi, η (%)

0 15255.21996 364554.70661 95.81538

10 15256.04616 773806.52289 98.02844

20 15256.96416 877746.51431 98.26180

30 15256.96416 951632.16673 98.39676

40 15256.04616 1021569.83244 98.50661

50 15256.04616 1122744.65551 98.64118

60 14396.16780 1190445.78852 98.79069



Waktu Udara Masuk

(menit)T Basah

(°C)

T Kering

(°C)

RH

(%)

Enthalpy, H1

(kJ/kg)

ρ udara

(kg/m3)

y0 (kg

air/kg UK)

0 23.5 28 100 70.2 1.177 0.0183

10 23 27 100 68.3 1.179 0.0177

20 23 28 100 68.3 1.179 0.0177

30 24 28 100 72.2 1.175 0.0189

40 25 28.5 100 76.3 1.17 0.0201

50 24 27.5 100 72.2 1.175 0.0189

Waktu

(menit)

Udara Keluar

T Basah

(°C)

T Kering

(°C)

RH

(%)

Enthalpy, H2

(kJ/kg)

ρ udara

(kg/m3)

y (kg

air/kg UK)

0 26 33 100 80.6 1.165 0.0214

10 25.5 33 100 78.4 1.168 0.0207

20 26 32 100 80.6 1.165 0.0214

30 26.5 35 100 82.8 1.163 0.022

40 26.5 34 100 82.8 1.163 0.022

50 27 34 100 85 1.16 0.0227


Waktu

(menit)

Tinggi

Unggun, L (m)

Volume

(m3)

Porositas,

Ɛ

Perbedaan

Tekanan, ΔPLog ΔP

0 0.0057 0.00013 0.2875 83.48023 1.92158

10 0.0065 0.00015 0.1875 108.55770 2.03566

20 0.0084 0.00019 -0.05 181.29778 2.25839

30 0.0084 0.00019 -0.05 181.29778 2.25839

40 0.0084 0.00019 -0.05 181.29778 2.25839

50 0.008 0.00018 0 164.44243 2.21601

Waktu

(menit)

Luas Permukaan

(m2)

Laju Alir,

v (m/s)

Debit, Q

(liter/s)

U

(kg.jam)Log U

0 0.022687 1.3 29.49245 1300 3.11394

10 0.022687 1.6 36.2984 1600 3.20412

20 0.022687 2.3 52.17895 2300 3.36173

30 0.022687 2.8 63.5222 2800 3.44716

40 0.022687 3.1 70.32815 3100 3.49136

50 0.022687 4.6 104.3579 4600 3.66276


3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.701.70

1.80

1.90

2.00

2.10

2.20

2.30

log U

log

ΔP


Waktu

(menit)

T

Kering

(°C)

Debit, Q

(m3/menit)

y (kg

air/kg

UK)

y0 (kg

air/kg

UK)

Gu

(kg/menit)F (kg)

0 28 1.76955 0.0214 0.0183 1.03159 0

10 27 2.04179 0.0207 0.0177 1.19029 128.5516

20 28 3.13074 0.0214 0.0177 1.82512 486.2107

30 28 3.53909 0.022 0.0189 2.06317 690.7506

40 28.5 4.21969 0.022 0.0201 2.45994 673.039

50 27.5 6.26147 0.0227 0.0189 3.65023 2496.758

m1 (kg/

menit)

m2 (kg/

menit)

m3 (kg/


0.00320 3.06 -3.056802 2551.93 117.373 2434.557 15258.65022

0.00357 3.06 -3.056429 2550.13 113.192 2436.938 15260.42808

0.00675 3.06 -3.053247 2551.93 117.373 2434.557 15258.65022

0.00640 3.06 -3.053604 2551.93 117.373 2434.557 15258.65022

0.00467 3.06 -3.055326 2552.84 119.463 2433.377 15257.82402

0.01387 3.06 -3.046129 2511.03 115.283 2395.747 15014.73762


Waktu

(menit)


Q

(m3/mnt)

Densitas,

ρ

(kg/ m3)

Laju Alir,

v (kg/jam)

Q

(m3/mnt)

Densitas,

ρ

(kg/ m3)

Laju Alir,

v (kg/jam)

0 1.76955 1.177 124.96541 2.17795 1.165 152.23884

10 2.04179 1.179 144.43587 2.45020 1.168 171.70974

20 3.13074 1.179 221.46834 2.58632 1.165 180.78363

30 3.53909 1.175 249.50613 2.17795 1.163 151.97749

40 4.21969 1.17 296.22217 2.31407 1.163 161.47608

50 6.26147 1.175 441.43392 2.45020 1.16 170.53364

Waktu

(menit)

U1

(kg/jam)

U2

(kg/jam)

H1

(kJ/kg)

H2

(kJ/kg)k1 Q2 (kJ/kg)

0 124.96541 152.23884 72.2 89.7 2602.9 320639.14161

10 144.43587 171.70974 70.2 80.6 2602.9 372251.72181

20 221.46834 180.78363 70.2 83.7 2602.9 576875.41762

30 249.50613 151.97749 72.2 89.7 2602.9 653821.45943

40 296.22217 161.47608 70.2 94.6 2602.9 776555.83923

50 441.43392 170.53364 70.2 94.6 2602.9 1163864.52104


0 15258.65022 320639.14161 95.24118

10 15260.42808 372251.72181 95.90051

20 15258.65022 576875.41762 97.35495

30 15258.65022 653821.45943 97.66624

40 15257.82402 776555.83923 98.03519

50 15014.73762 1163864.52104 98.70992



Waktu Udara Masuk

(menit) T Basah

(°C)

T Kering

(°C)

RH

(%)

Enthalpy, H1

(kJ/kg)

ρ udara

(kg/m3)

y0 (kg

air/kg UK)

0 25 29 100 76.3 1.17 0.0201

10 24 30 100 72.2 1.175 0.0189

20 25 32 100 76.3 1.17 0.0201

30 25 31 100 76.3 1.17 0.0201

Waktu

(menit)

Udara Keluar

T Basah

(°C)

T Kering

(°C)

RH

(%)

Enthalpy, H2

(kJ/kg)

ρ udara

(kg/m3)

y (kg

air/kg UK)

0 30 48 100 99.7 1.146 0.0272

10 30 52 100 99.7 1.146 0.0272

20 29 54 100 94.6 1.151 0.0256

30 29 54 100 94.6 1.151 0.0256


Waktu

(menit)

Tinggi

Unggun, L (m)Volume (m3)

Porositas,

Ɛ

Perbedaan

Tekanan, ΔPLog ΔP

0 0.0024 5.44476 x 10-5 0.31429 33.82816 1.52928

10 0.0036 8.16714 x 10-5 -0.02857 76.11335 1.88146

20 0.004 0.000090746 -0.14286 93.96710 1.97298

30 0.0035 7.94028 x 10-5 0 71.94356 1.85699

Waktu

(menit)

Luas Permukaan

(m2)

Laju Alir,

v (m/s)

Debit, Q

(liter/s)

U

(kg.jam)Log U

0 0.022687 2.5 56.71625 2500 3.39794

10 0.022687 3.4 77.1341 3400 3.53148

20 0.022687 3.75 85.074375 3750 3.57403

30 0.022687 3.8 86.2087 3800 3.57978


3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.800.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

log U

log

ΔP


Waktu

(menit)

T Kering

(°C)

Debit, Q

(m3/menit)

y (kg

air/kg

UK)

y0 (kg

air/kg

UK)

Gu

(kg/menit)F (kg)

0 29 1.76955 0.0272 0.0201 1.03159 0

10 30 2.04179 0.0272 0.0189 1.19029 355.6594

20 32 3.13074 0.0256 0.0201 1.82512 722.7457

30 31 3.53909 0.0256 0.0201 2.06317 1225.525

m1 (kg/

menit)

m2 (kg/

menit)

m3 (kg/


0.007324 3.06 -3.05268 2553.74 121.554 2432.186 15256.93356

0.009879 3.06 -3.05012 2555.55 125.734 2429.816 15255.21996

0.010038 3.06 -3.04996 2559.15 134.094 2425.056 15251.67036

0.011347 3.06 -3.04865 2557.35 129.914 2427.436 15253.44516


Waktu

(menit)


Q

(m3/mnt)

Densitas,

ρ

(kg/ m3)

Laju Alir,

v (kg/jam)

Q

(m3/mnt)

Densitas,

ρ

(kg/ m3)

Laju Alir,

v (kg/jam)

0 1.769547 1.17 124.2222 2.58632 1.146 177.83523

10 2.041785 1.175 143.9458 2.45020 1.146 168.47548

20 3.130737 1.17 219.7777 2.45020 1.151 169.21054

30 3.539094 1.17 248.4444 2.72244 1.151 188.01171

Waktu

(menit)

U1

(kg/jam)

U2

(kg/jam)

H1

(kJ/kg)

H2

(kJ/kg)k1 Q2 (kJ/kg)

0 124.2222 177.8352 72.2 89.7 2606.22 316767.4036

10 143.9458 168.4755 70.2 80.6 2606.22 371680.4083

20 219.7777 169.2105 70.2 83.7 2606.22 574054.6101

30 248.4444 188.0117 72.2 89.7 2606.22 648573.7966


0 15256.93356 316767.4036 95.18355

10 15255.21996 371680.4083 95.89561

20 15251.67036 574054.6101 97.34317

30 15253.44516 648573.7966 97.64816

laporan fbd kel 4 - pengamatan, perhitungan

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