AFR yang Dihasilkan Bahan Bakar Biogas

Tabel 4.13 AFR hasil pengujian dengan bahan bakar premium P re miu m Parameter Performansi Jumlah Lampu Tiap Lampu 100 Watt 1 2 3 4 5 Putaran rpm 4049,5 4148 4229 4370 4458,5 Daya Watt 114,1 207,495 315,635 415,405 517,635 ṁf kgjam 0,54 0,6 0,648 0,696 0,744 ṁa kgjam 10,087 10,087 10,087 10,087 10,087 AFR 18,679 16,812 15,566 14,493 13,558

4.5.2 AFR yang Dihasilkan Bahan Bakar Biogas

• P = 107,25 watt = 0,10725 kW ⇒ n= 4188,5 rpm ṁf = 1,72 kgjam V d : 95 × 10 −6 � 3 V c : 10 × 10 −6 � 3 P i = 85 kPa R = 0,287 kJkg.K T i = 333 K � � = � � � � + � � �. � � � � = 8595 × 10 −6 + 10 × 10 −6 0,287 × 333 � � = 0,0000934 �� ��� − ����� Maka: ṁ � = �0,0000934 �� ��� − ������ 1 ��� � 3600 ��� 60 ��� � � 1 ����� 2 ��� � Universitas Sumatera Utara ṁ � = 0,002802 ����� ṁ � = 10,087 ����� Sehingga: ��� = ṁ � ṁ � ��� = 10,087 ����� 1,72 ����� ��� = 5,86 • P = 207,46 watt = 0,20746 kW ⇒ n= 4238,5 rpm ṁf = 1,86 kgjam V d : 95 × 10 −6 � 3 V c : 10 × 10 −6 � 3 P i = 85 kPa R = 0,287 kJkg.K T i = 333 K � � = � � � � + � � �. � � � � = 8595 × 10 −6 + 10 × 10 −6 0,287 × 333 � � = 0,0000934 �� ��� − ����� Maka: ṁ � = �0,0000934 �� ��� − ������ 1 ��� � 3600 ��� 60 ��� � � 1 ����� 2 ��� � ṁ � = 0,002802 ����� ṁ � = 10,087 ����� Universitas Sumatera Utara Sehingga: ��� = ṁ � ṁ � ��� = 10,087 ����� 1,86 ����� ��� = 5,42 • P = 310,5 watt = 0,3105 kW ⇒ n= 4358 rpm ṁf = 2,01 kgjam V d : 95 × 10 −6 � 3 V c : 10 × 10 −6 � 3 P i = 85 kPa R = 0,287 kJkg.K T i = 333 K � � = � � � � + � � �. � � � � = 8595 × 10 −6 + 10 × 10 −6 0,287 × 333 � � = 0,0000934 �� ��� − ����� Maka: ṁ � = �0,0000934 �� ��� − ������ 1 ��� � 3600 ��� 60 ��� � � 1 ����� 2 ��� � ṁ � = 0,002802 ����� ṁ � = 10,087 ����� Sehingga: ��� = ṁ � ṁ � Universitas Sumatera Utara ��� = 10,087 ����� 2,01 ����� ��� = 5,02 • P = 407,79 watt = 0,40779 kW ⇒ n= 4428,5 rpm ṁf = 2,13 kgjam V d : 95 × 10 −6 � 3 V c : 10 × 10 −6 � 3 P i = 85 kPa R = 0,287 kJkg.K T i = 333 K � � = � � � � + � � �. � � � � = 8595 × 10 −6 + 10 × 10 −6 0,287 × 333 � � = 0,0000934 �� ��� − ����� Maka: ṁ � = �0,0000934 �� ��� − ������ 1 ��� � 3600 ��� 60 ��� � � 1 ����� 2 ��� � ṁ � = 0,002802 ����� ṁ � = 10,087 ����� Sehingga: ��� = ṁ � ṁ � ��� = 10,087 ����� 2,13 ����� ��� = 4,74 Universitas Sumatera Utara • P = 424,74 watt = 0,42474 kW ⇒ n= 3898,5 rpm ṁf = 2,24 kgjam V d : 95 × 10 −6 � 3 V c : 10 × 10 −6 � 3 P i = 85 kPa R = 0,287 kJkg.K T i = 333 K � � = � � � � + � � �. � � � � = 8595 × 10 −6 + 10 × 10 −6 0,287 × 333 � � = 0,0000934 �� ��� − ����� Maka: ṁ � = �0,0000934 �� ��� − ������ 1 ��� � 3600 ��� 60 ��� � � 1 ����� 2 ��� � ṁ � = 0,002802 ����� ṁ � = 10,087 ����� Sehingga: ��� = ṁ � ṁ � ��� = 10,087 ����� 2,24 ����� ��� = 4,5 Tabel 4.14 AFR hasil pengujian denganbahan bakar Biogas Universitas Sumatera Utara B iog as Parameter Uji Jumlah Lampu Tiap Lampu 100 Watt 1 2 3 4 5 Putaran rpm 4188,5 4238,5 4358 4428,5 3898,5 Daya Watt 107,25 207,495 310,495 407,79 424,74 ṁf kgjam 1,72 1,86 2,01 2,13 2,24 ṁa kgjam 10,087 10,087 10,087 10,087 10,087 AFR 5,864535 5,423118 5,018408 4,735681 4,503125

4.5.3 Perbandingan AFR yang Dihasilkan Bahan Bakar Premium dengan Biogas