13. Hidrocyclone
T = 30 C
-Air T = 30
C -Cangkang
-Kernel T = 36
C -Kernel
-Air 25
26 29
27 28
T = 28,5 C
-Kernel -Cangkang
T = 30 C
-Air
Hidrocyclone
Panas masuk :
Alur 25 :
Q Kernel = 3.209,36 kg x 20,354 kJkg K x 5 K
= 326.616,567
kJ Q Cangkang = 850,038 kg x 11,6084 kJkg K x 5 K
= 49.337,905
kJ
Alur 26 :
Q Air = 3.815,834 kg x 4,1774 kJkg K x 5 K
= 79.701,325
kJ Total Panas masuk
= 455.655,797 kJ Panas keluar :
Alur 27 :
Q Air = 18,267 kg x 4,1774 kJkg K x 5 K
= 1.859,033
kJ
Alur 28 :
Q Kernel = 18,267 kg x 20,354 kJkg K x 5 K
= 1859,033
kJ Q Cangkang = 1808,462 kg x 11,6084 kJkg K x 5 K
= 104.966,751
kJ
Alur 29 :
Q Kernel = 1925,677 kg x 20,354 kJkg K x 5 K
= 195.976,148
kJ Q Air
= 306,992 kg x 4,1774 kJkg K x 5 K =
6.412,142 kJ
Universitas Sumatera Utara
Total Panas keluar = 388.915,399 kJ Panas masuk = Panas keluar + panas hilang
Panas hilang = Panas masuk – Panas keluar = 455.655,797 – 388.915,399
= 66.740,398
kJ
Tabel LB.13 Neraca Panas pada Hidrocyclone
Panas masuk kJ Panas keluar kJ
Komposisi Alur 25
Alur 26 Alur 28
Alur 29 Alur 27
Kernel Cangkang
Air 326.616,567
49.337,905 -
- -
79.701,325 1.859,033
104.966,751 -
195.976,148 -
6.412,142 -
- 79.701,325
Jumlah 2.631.681,309 79.701,325 106.825,784
202.388,29 79.701,325 Panas hilang
- 66.740,398
Total 455.655,797 455.655,797
15. Kernel Drayer
30 31
29
90 C
Kernel Drayer
T = 60 C
Air T = 60
C
-
Air T = 30
C Kernel
-Air
-Kernel
Panas masuk : Alur 29 :
Q Kernel = 1.925,677 kg x 20,354 kJkg K x 5 K
= 195.976,148
kJ Q Air
= 306,992 kg x 4,1774 kJkg K x 5 K =
6.412,142 kJ
Panas keluar : Alur 30 :
Q Air = 309,225 kg x 4,1774 kJkg K x 35 K
Universitas Sumatera Utara
= 45.211,478
kJ Total Panas Keluar
= 45.211,478 kJ Panas penguapan air dihitung dengan korelasi Watson :
0,38 11
12 1
2
Tr 1
Tr 1
ΔH ΔH
Tr1 = 3
, 647
273 80
= 0,545
Tr2 = 3
, 647
273 80
= 0,545
H1 = Panas penguapan pada titik didih air = 2676 kJkg Hv12 = 2676 x
38 ,
576 ,
1 545
, 1
= 2748,7257 kJkg Panas penguapan
= m x Hv
= 309,225 x 2748 kJ =
849.750,3
Alur 31 :
Q Kernel = 1.923,444 kg x 20,354 kJkg K x 35 K
= 1.370.242,271
kJ Panas masuk + Panas dibutuhkan = Panas keluar + Panas penguapan
202.388,29 + Panas dibutuhkan = 1.415.453,749 + 849.750,3 Panas dibutuhkan
= 2.062.815,73 kJ Entalphi steam pada 70,11 kPa, T 90
C = 2.283,2 kJkg K Saturated steam Maka Steam yang dibutuhkan :
m =
λ dQ
=
kJkg 2.283,2
kJ 73
, 815
. 062
. 2
= 903,475 kg
Universitas Sumatera Utara
Tabel LB.14 Neraca Panas pada Kernel Drayer
Panas masuk kJ Panas keluar kJ
Komposisi Alur 29
Alur 30 Alur 31
Kernel Air
Panas penguapan Panas dibutuhkan
195.976,148 6.412,142
- 2.062.815,73
- 45.211,478
849.750,3 -
1.370.242,271 -
- -
Jumlah 2.265.204,049 894.961,778 1.370.242,271
Total 2.265.204,049 2.265.204,049
Universitas Sumatera Utara
LAMPIRAN C PERHITUNGAN SPESIFIKASI PERALATAN
1. Penimbunan Buah Loading Ramp
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