Neraca Luas Permukaan

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LAMPIRAN PERHITUNGAN 1. Neraca Massa A. Larutan gula 10% Total feed = berat sampel & wadah awal – berat wadah = 331,74 – 127,14 = 204,6 gr Liquid = Total feed – solid = 204,6 – 20 = 184,6 gr 15 menit Total produk = berat sampel & wadah sesudah evaporasi – berat wadah = 295,14 – 127,14 = 169 gr Liquid = Total produk – solid = 169 - 20 = 149 gr Berat uap air = berat sampel & wadah awal – berat sampel & wadah sesudah evaporasi = 331,74 gr – 295,14 gr = 35,6 gr Konsentrasi produk =

= = 17,50% 30 menit Total produk = 262,00 – 127,14 = 134,86 gr Liquid = 134,86 - 20 = 114,86 gr

Berat uap air = 331,74 gr – 262 gr = 69,74 gr Konsentrasi produk = = 14,8% 45 menit Total produk = 227,52 – 127,14 = 100,38 gr Liquid = 100,38 - 20 = 80,38 gr Berat uap air = 331,74 gr – 227,52 gr = 104,22 gr Konsentrasi produk = = 19,92% B. Larutan gula 15% Total feed = 332,05 – 125,83 = 176,22 gr Liquid = 176,22 – 30 = 146,22 gr 15 menit Total produk = 296,75 – 125,83 = 170,92 gr Liquid = 170,92 - 30 = 140,92 gr Berat uap air = 332,05 gr – 296,75 gr = 35,3 gr Konsentrasi produk =

= 17,50% 30 menit Total produk = 260,93 – 125,83 = 135,1 gr Liquid = 135,1 - 30 = 105,1 gr Berat uap air = 332,05 gr - 260,93 gr = 71,12 gr Konsentrasi produk = = 22,20% 45 menit Total produk = 222,49 – 125,83 = 96,66 gr Liquid = 96,66 - 30 = 66,66 gr Berat uap air = 332,05 gr – 222,49 gr = 109,56 gr Konsentrasi produk = = 28,94% C. Larutan garam 10% Total feed = 308,33 – 99,57 = 208,76 gr Liquid = 208,76 – 20 = 188,76 gr 15 menit Total produk = 273,78 – 99,57 = 174,21 gr Liquid = 174,21 - 20

= 154,21 gr Berat uap air = 308,33 gr – 273,78 gr = 34,55 gr Konsentrasi produk = = 11,48% 30 menit Total produk = 245,70 – 99,57 = 146,31gr Liquid = 146,31 - 20 = 126,31 gr Berat uap air = 308,33 gr – 245,70 gr = 62,63 gr Konsentrasi produk = = 13,68% 45 menit Total produk = 215,1 – 99,57 = 115,53 gr Liquid = 115,53 - 20 = 95,53 gr Berat uap air = 308,33 gr – 215,1 gr = 93,23 gr Konsentrasi produk = = 17,31% D. Larutan garam 15% Total feed = 320,34 – 107,38 = 212,96 gr Liquid = 212,96 – 30

= 182,96 gr 15 menit Total produk = 292,36 – 107,38 = 184,98 gr Liquid = 184,98 - 30 = 154,98 gr Berat uap air = 320,34 gr – 292,36 gr = 27,98 gr Konsentrasi produk = = 16,21% 30 menit Total produk = 267,85 – 99,57 = 115,53 gr Liquid = 115,53 - 20 = 95,53 gr Berat uap air = 320,34 gr – 267,85 gr = 52,49 gr Konsentrasi produk = = 18,69% 45 menit Berat uap air = 320,34 gr – 235,15 gr = 85,19 gr Konsentrasi produk = = 23,47% E. Larutan susu 10% Total feed = 327,79 – 127,13

= 200,66 gr Liquid = 200,66 – 20 = 180,66 gr 15 menit Total produk = 312,43 – 127,13 = 185,3 gr Liquid = 185,3 - 20 = 165,3 gr Berat uap air = 327,79 gr – 312,43 gr = 15,36 gr Konsentrasi produk = = 10,79% 30 menit Total produk = 283,22 – 127,13 = 166,09 gr Liquid = 166,09 - 20 = 146,09 gr Berat uap air = 327,79 gr – 283,22 gr = 44,57 gr Konsentrasi produk = = 12,81% 45 menit Total produk = 261,12 – 127,13 = 133,99 gr Liquid = 133,99 - 20 = 113,99 gr Berat uap air = 327,79 gr – 261,12 gr = 66,67 gr

Konsentrasi produk = = 14,93% F. Larutan susu 15% Total feed = 320,37 – 125,91 = 194,46 gr Liquid = 194,96 – 30 = 164,46 gr 15 menit Total produk = 304,23 – 125,91 = 178,32 gr Liquid = 178,32 - 30 = 148,32 gr Berat uap air = 320,37 gr – 304,23 gr = 16,14 gr Konsentrasi produk = = 16,82% 30 menit Total produk = 276,19 – 125,91 = 150,28 gr Liquid = 150,28 - 30 = 120,28 gr Berat uap air = 320,37 gr – 276,19 gr = 44,18 gr Konsentrasi produk = = 19,96% 45 menit Total produk = 253,02 – 125,91

= 127,11 gr Liquid = 127,11 - 30 = 97,11 gr Berat uap air = 320,37 gr – 253,02 gr = 67,35 gr Konsentrasi produk = = 23,6% 2. Luas Permukaan A. Beaker glass 150 mL Luas permukaan =

=

π

D

3,14

5,2 cm

= 4,082 cm2 Berat air awal = berat beaker glass & air awal – berat beaker glass = 166,42 gr – 67,28 gr = 99,14 gr Berat air setelah penguapan (15 menit) = berat beaker glass & air akhir – berat beaker glass = 136,27 gr – 67,28 gr = 68,99 gr Kecepatan penguapan =

= = 2,078 gr/menit B. Beaker glass 250 mL

Luas permukaan =

3,14

6,4 cm

= 5,024 cm2 Berat air awal = berat beaker glass & air awal – berat beaker glass = 225,81 gr – 126,61 gr = 99,2 gr Berat air setelah penguapan (15 menit) = berat beaker glass & air akhir – berat beaker glass = 179,83 gr – 126,61 gr = 50,22 gr Kecepatan penguapan = = 3,26 gr/menit

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