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Housing sample Pemanas air Housing sample II
Cooler
Thermocouple l
Pump ll
Pump l
Thermocouple ll
Graphic panel
Flow meter
9000 8500
8000
7500 7000
6500
6000 5500 C
ondu
ctiv
ity (:s
/cm
)
0 10 20 30 40 50 60 Time (min)
Without citric acid
Citric acid 5 ppm
Citric acid 10 ppm
Citric acid 20 ppm
90 80 70 60 50 40 30 20 10 0
Mas
s sc
ale
(mg)
30°C 40°C 50°C 60°C
13
28
49
80
Temperature
30
25
20
15
10
5
0
Mas
s sc
ale
(mg)
Without additive
Citric acid 5 ppm
Citric acid 10 ppm
Citric acid 20 ppm
13 10
6 4
(a)
(b)
(c)
(d)
Inte
nsity
V C
V
C
V C C V
V V
0 10 20 30 40 50 60 70 80 90 100 22(o)
(a) (b)
(c) (d)
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