53
B. Ulangan 2
Tabel massa dan suhu bahan Ulangan 2.
Air dingin1
Air panas Arang
sekam Air
dingin2 m kg
0.05067 0.05011
0.002 0.05027
T0
o
C
14.2 63.4
30.5 12.5
Tabel suhu air dingin dan air panas Ulangan 2. Tabel suhu air dingin dan sampel Ulangan 2.
ts T
o
C ts
T
o
C
15.5 15
5 16.1
5 16.4
10 16.6
10 17.1
15 16.9
15 17.5
20 17.2
20 18
25 17.5
25 18.4
30 17.6
30 18.7
35 17.7
35 19
40 38.4
40 19.2
45 37
45 19.3
50 36.3
50 19.5
55 35.9
55 19.6
60 35.6
60 19.8
65 35.3
65 20
70 35.1
70 20.1
75 35
75 20.2
80 34.8
80 20.6
85 34.7
85 20.7
90 34.6
90 20.8
95 20.9
Keterangan: = Tw
= Te
54
Pengolahan data Ulangan 2: 1.
Penentuan Cc
Mw Cpw Te - Tw =
Mwh Cpw Twh - Te + Cc Tc - Te 0.05067 x 4.2 38.4
– 17.7 =
0.05011 x 4.2 63.4 – 38.4 + Cc 17.7 – 38.4
4.41 =
5.26-20.70Cc Cc
= 0.041kJkg
o
C
2. Penentuan Cps
Mw Cpw Te – Tw
= Ms Cps Ts
–Te + Cc Tc – Te 0.05027 x 4.2 20.6
– 20.2 =
0.002 x Cps 30.5 – 20.6 + 0.041 20.2 – 20.6
0.08 =
0.02Cps -0.02 Cps
= 5.101kJkg
o
C
55
C. Ulangan 3
Tabel massa dan suhu bahan Ulangan 3.
Air dingin1
Air panas Arang
sekam Air
dingin2 m kg
0.05067 0.05002
0.00205 0.05035
T0
o
C
10.9 54.1
30.5 13.9
Tabel suhu air dingin dan air panas Ulangan 3. Tabel suhu air dingin dan sampel Ulangan 3.
ts T
o
C ts
T
o
C
13.4 15.8
5 14.3
5 16.7
10 14.9
10 17.4
15 15.2
15 17.8
20 15.6
20 18
25 15.8
25 18.2
30 16
30 18.6
35 16.1
35 18.8
40 16.4
40 19
45 16.5
45 19.1
50 16.7
50 19.3
55 16.8
55 19.4
60 17
60 19.6
65 17.1
65 19.7
70 17.3
70 19.8
75 17.4
75 20.1
80 17.5
80 20.4
85 33.8
85 20.5
90 33.1
90 20.6
95 32.5
100 32.2
Keterangan: 105
32 = Tw
110 31.8
= Te 115
31.5 120
31.5 125
31.4 130
31.3
56
Pengolahan data Ulangan 3: 1.
Penentuan Cc
Mw Cpw Te - Tw =
Mwh Cpw Twh - Te + Cc Tc - Te 0.05067 x 4.2 33.8
– 17.5 =
0.05002 x 4.2 54.1 – 33.8 + Cc 17.5 – 33.8
3.469 =
4.265-16.300Cc Cc
= 0.049kJkg
o
C
2. Penentuan Cps
Mw Cpw Te – Tw
= Ms Cps Ts
–Te + Cc Tc – Te 0.05035 x 4.2 19.8
– 20.1 =
0.00205 x Cps 30.5 – 20.1 + 0.049 19.8 – 20.1
0.063 =
0.021Cps -0.015 Cps
= 3.663kJkg
o
C = 0.0527kJkg
o
C = 3.853 k kJkg
o
C
57
Lampiran 7. Perhitungan pressure drop pada arang sekam
A. Arang sekam di dalam polybag kecil
Q m
3
s k cms
A cm
2
nkgcm.s dLcm
dPatm 0.1
9.14E-03 298.65
1.78E-07 20
-1.30E-07 0.2
9.14E-03 298.65
1.78E-07 20
-2.61E-07 0.3
9.14E-03 298.65
1.78E-07 20
-3.91E-07 0.4
9.14E-03 298.65
1.78E-07 20
-5.22E-07 0.5
9.14E-03 298.65
1.78E-07 20
-6.52E-07
B. Arang sekam di dalam polybag besar
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