BAB V - Perhitungan.doc

BAB V

PERHITUNGAN

1. Inherent Moisture

ASTM

Diketahui : m2 = 15,2589 g (simplo) 12,3573 g (duplo)

m1 = 14,2591 g (simplo) 11,3572 g (duplo)

m3 = 15,2425 g (simplo) 12,3406 g (duplo)

Rumus:

Perhitungan:

66

67

ISO


m1 = 13,7815 g (simplo) 12,6573 g (duplo)

m3 = 14,7659 g (simplo) 13,6412 g (duplo)

Rumus:

Perhitungan:

68

2. Ash Content

ASTM

Diketahui : m2 = 20,8718 (simplo) 24,4694 g (duplo)

m1 = 19,8717 (simplo) 23,4699 g (duplo)

m3 = 19,9767 (simplo) 23,5746 g (duplo)

Rumus :

69

ISO

Diketahui : m2 = 20,1922 (simplo) 21,2822 g (duplo)

m1 = 19,1922 (simplo) 20,2824 g (duplo)

m3 = 19,2971 (simplo) 28,3866 g (duplo)

Rumus :

70

3. Volatile Matter

ASTM


m1 = 16,0491 g (simplo) 16,7390 g (duplo)

m3 = 16,8354 g (simplo) 17,5182 g (duplo)

Rumus :

Perhitungan:

Mean %VM = % berat yang hilang - % IM = 21,39 % - 1,66 % = 19,73 %

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ISO


m1 = 12,6235 g (simplo) 14,8082 g (duplo)

m3 = 13,4108 g (simplo) 15,5953 g (duplo)

Rumus :

Perhitungan:

Mean %VM = % berat yang hilang - % IM = 21,28 % - 1,6 % = 19,7 %

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4. Fixed Carbon

(db)

ASTM

Diketahui : % IM = 1,66 %

% Ash = 10,67 %

% VM = 20,06 %

Rumus : FC = 100 – (% IM + % Ash + % VM)

Perhitungan :

FC = 100 – (% IM + % Ash + % VM)

FC = 100 – (1,66 + 10,67 + 20,06)

FC = 100 – (32,39)

FC = 67,61 %

ISO

Diketahui : % IM = 1.6%

% Ash = 10.6 %

% VM = 20,0 %

Rumus : FC = 100 – (% IM + % Ash + % VM)

Perhitungan :

FC = 100 – (% IM + % Ash + % VM)

FC = 100 – (1.6 + 10.6 + 20.0)

FC = 100 – (32.2)

FC = 67.8 %

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5. Total Sulfur

Diketahui : V1 = 3,40 ml (simplo) V1 = 3,45 ml (duplo)

V2 = 0.05 ml (simplo) V2 = 0,05 ml (duplo)

m = 0,50000 g m = 0,5001 g

f = 1,0161

Rumus :

Perhitungan :

74

6. Calorific Value

Diketahui : Gross Calorific Value = 1.0000 (simplo), 1.0000 (duplo)

Total Sulfur of Coal = 0.55

Rumus :

CV= (GCV - (%TS x 0.0942 x 238.8461) kal/g

Perhitungan :

BAB V - Perhitungan.doc

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