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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)
Temperatur (°C) Laju
(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
A.3 Data Pengamatan Run 2
Berat beras = 0,5 kg
Suhu unggun awal = 26°C
Tinggi unggun awal = 3,5 cm
Berat Fluidized Bed Dryer + Beras basah = 10,14 kg
Waktu
(menit)
Tinggi
Unggun
(cm)
Udara Masuk Udara Keluar
Temperatur (°C) Laju
(m/s)
Temperatur (°C) Laju
(m/s)Basah Kering Inlet Basah Kering Exhaust
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
Berat Fluidized Bed Dryer + Beras kering = 9,96 kg
Suhu unggun akhir = 48°C
A.4 Data Pengamatan Run 3
Berat beras = 0,25 kg
Suhu unggun awal = 32°C
Tinggi unggun awal = 1,2 cm
Berat Fluidized Bed Dryer + Beras basah = 9,82 kg
Waktu
(menit)
Tinggi
Unggun
(cm)
Udara Masuk Udara Keluar
Temperatur (°C) Laju
(m/s)
Temperatur (°C) Laju
(m/s)Basah Kering Inlet Basah Kering Exhaust
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
Berat Fluidized Bed Dryer + Beras kering = 9,72 kg
Suhu unggun akhir = 48°C
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)
Udara Masuk Udara Keluar
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
B.5 Perhitungan Run 2
B.5.1 Perhitungan RH, Enthalpy (H), Densitas (ρ) dan Berat Udara (y0)
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
B.5.2 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 0.0057 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
B.5.3 Kurva Antara Log U dan Log ΔP
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
B.5.4 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 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/
menit)Hg Hf Hfg Q1 (kJ/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
B.5.5 Perhitungan Efisiensi Steam
Waktu
(menit)
Udara Masuk Udara Keluar
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
Waktu (menit) Q1 (kJ/kg) Q2 (kJ/kg) Efisiensi, η (%)
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
B.6 Perhitungan Run 3
B.6.1 Perhitungan RH, Enthalpy (H), Densitas (ρ) dan Berat Udara (y0)
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
B.6.2 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 0.0024 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
B.6.3 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.6.4 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 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/
menit)Hg Hf Hfg Q1 (kJ/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
B.6.5 Perhitungan Efisiensi Steam
Waktu
(menit)
Udara Masuk Udara Keluar
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
Waktu (menit) Q1 (kJ/kg) Q2 (kJ/kg) Efisiensi, η (%)
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