1. hasil pengamataneprints.undip.ac.id/76797/13/16._lampiran.pdf1.3 tabel 11. hasil pengamatan cake...
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LAMPIRAN
1. Hasil Pengamatan
1.1 Tabel 9. Hasil Pengamatan Densitas dan Viskositas
Variabel Pengamatan
Berat
Kopi
(gr)
Volume air
( L)
Waktu
Filtrasi
(menit)
Filtrat ke Densitas
(gr/ml)
Viskositas
(cp)
500 40 50 1 1,048 1,310
2 1,047 1,288
3 1,045 1,244
4 1,044 1,211
5 1,042 1,073
1000 40 50 1 1,089 1,503
2 1,083 1,354
3 1,088 1,479
4 1,082 1,277
5 1,082 1,215
1.2 Tabel 10. Hasil Volume Filtrat
Variabel Pengamatan Valve pengambilan filtrate
Waktu
(menit) Air
Massa
(gr)
Waktu
(menit) I II III IV V
50 40 L 500 gr 10 2050 1700 1600 1325 1230
20 2700 2450 2300 2075 2000
30 3575 3400 3250 2900 2500
40 4100 3550 3420 3250 2750
50 4450 4200 4000 3550 3150
50 40 L 1000 gr 10 1400 1230 1190 1150 700
20 1950 2000 1575 1500 815
30 2475 2550 2260 2135 1075
40 2900 2800 2420 2300 1200
50 3350 3250 2900 2650 1400
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1.3 Tabel 11. Hasil Pengamatan Cake Basah dan Cake Kering
Variabel Pengamatan
Variabel Lama Pengovenan
(jam)
Plate ke Cake
Basah (gr)
Cake
Kering
(gr)
500 gr 2 1 185,900 143,230
2 77,540 52,700
3 39,470 20,560
4 23,710 9,470
1000 gr 2 1 219,600 128,650
2 173,600 93,320
3 157,850 87,170
4 153,480 85,310
2. Perhitungan
2.1 Densitas Variabel 1 (500 gr)
Rumus densitas :
π = πππ π π ππππππππ‘ππ ππ π β πππ π π ππππππππ‘ππ πππ πππ
π£πππ’ππ ππππππππ‘ππ
Filtrat 1
π ml
gr
25
)04.2723,53(
= 1,048 gr/ml
Filtrat 2
π ml
gr
25
)04.2722,53(
= 1,047 gr/ml
Filtrat 3
π ml
gr
25
)04.2717,53(
= 1,045 gr/ml
Filtrat 4
π ml
gr
25
)04.2713,53(
= 1,044 gr/ml
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Filtrat 5
π ml
gr
25
)04.2709,53(
= 1,042 gr/ml
2.2 Viskositas Variabel 1 (500 gr)
Rumus Viskositas :
Β΅ = π‘π₯ Γ Οx
π‘0 Γ Ο0 Γ ΞΌ0
Filtrat 1
Β΅ =
1,25 π Γ 1,048 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,310 cp
Filtrat 2
Β΅ =
1,23 π Γ 1,047 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,288 cp
Filtrat 3
Β΅ =
1,19 π Γ 1,045 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,244 cp
Filtrat 4
Β΅ =
1,16 π Γ 1,044 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,211 cp
Filtrat 5
Β΅ = 1,03 π Γ 1,042 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,073 cp
2.3 Massa Cake Basah, Cake Kering dan % Kadar Air yang Menguap Variabel 1
2.3.1 Cake Basah
π΅ππππ‘ π΅ππ πβ = πΆπππ π΅ππ πβ β π΅ππππ‘ πππ€ππ ππππ ππππ πππ πππ
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Plate 1
Cake basah = (224.67-38.77) gr
= 185,900 gr
Plate 2
Cake basah = (128.69-51.15) gr
= 77,540 gr
Plate 3
Cake basah = (84.25-44.78) gr
= 39,470 gr
Plate 4
Cake basah = (67.36-43.65) gr
= 23,710 gr
2.3.2 Cake Kering
π΅ππππ‘ ππππππ = πΆπππ ππππππ β π΅ππππ‘ πππ€ππ ππππ ππππ πππ πππ
Plate 1
Cake kering = (182-38.77) gr
= 143,230 gr
Plate 2
Cake kering = (103.85-51.15) gr
= 52,700 gr
Plate 3
Cake kering = (65.34-44.78) gr
= 20,560 gr
Plate 4
Cake kering = (53.12-43.65) gr
= 9,470 gr
2.4 Densitas Variabel 2 (1000 gr)
Rumus densitas :
π = πππ π π ππππππππ‘ππ ππ π β πππ π π ππππππππ‘ππ πππ πππ
π£πππ’ππ ππππππππ‘ππ
Filtrat 1
π ml
gr
25
)04.2726,54(
= 1,089 gr/ml
Filtrat 2
π ml
gr
25
)04.2712,54(
= 1,083 gr/ml
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Filtrat 3
π ml
gr
25
)04.2723,54(
= 1,088 gr/ml
Filtrat 4
π ml
gr
25
)04.2709,54(
= 1,082 gr/ml
Filtrat 5
π ml
gr
25
)04.2717,54(
= 1,085 gr/ml
2.5 Viskositas Variabel 2 (1000 gr)
Rumus Viskositas :
Β΅ = π‘π₯ Γ Οx
π‘0 Γ Ο0 Γ ΞΌ0
Filtrat 1
Β΅ =
1,38 π Γ 1,089 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,503 cp
Filtrat 2
Β΅ =
1,25 π Γ 1,083 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,354 cp
Filtrat 3
Β΅ =
1,36 π Γ 1,088 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,479 cp
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Filtrat 4
Β΅ =
1,18 π Γ 1,082 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,277 cp
Filtrat 5
Β΅ = 1,12 π Γ 1,085 gr/ml
1 π Γ 1 gr/ml Γ 1 cp
= 1,215 cp
2.6 Massa Cake Basah, Cake Kering dan % Kadar Air yang Menguap Variabel 2
2.6.1 Cake Basah
π΅ππππ‘ π΅ππ πβ = πΆπππ π΅ππ πβ β π΅ππππ‘ πππ€ππ ππππ ππππ πππ πππ
Plate 1
Cake basah = (258.67-39.07) gr
= 219,600 gr
Plate 2
Cake basah = (217.23-43.63) gr
= 173,600 gr
Plate 3
Cake basah = (201.68-43.83) gr
= 157,850 gr
Plate 4
Cake basah = (202.35-48.87) gr
= 153,480 gr
2.6.2 Cake Kering
π΅ππππ‘ ππππππ = πΆπππ ππππππ β π΅ππππ‘ πππ€ππ ππππ ππππ πππ πππ
Plate 1
Cake kering = (167.72-39.07) gr
= 128,650 gr
Plate 2
Cake kering = (136.95-43.63) gr
= 93,320 gr
Plate 3
Cake kering = (127-39.83) gr
= 87,170 gr
Plate 4
Cake kering = (134.18-48.87) gr
= 85,310 gr
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3. Lampiran Foto Hasil Percobaan
Alat Filtrasi Menghitung Viskositas Menghitung Densitas
Pengovenan cake selama 2 jam Proses desikator
Kopi dieng
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3.1 Variabel 1 (500 gr)
Menit ke 10
Filtrat 1,2,3,4,5
Menit ke 20
Filtrat 1,2,3,4,5
Menit ke 30
Filtrat 1,2,3,4,5
Menit ke 40
Filtrat 1,2,3,4,5
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Menit ke 50
Filtrat 1,2,3,4,5
Cake basah
Plate 1,2,3,4
3.2 Variabel 2 (1000 gr)
Menit ke 10
Filtrat 1,2,3,4,5
Menit ke 20
Filtrat 1,2,3,4,5
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Menit ke 30
Filtrat 1,2,3,4,5
Menit ke 40
Filtrat 1,2,3,4,5
Menit ke 50
Filtrat 1,2,3,4,5
Cake basah
Plate 1,2,3,4