Uji Variasi Ukuran Diameter Pipa Kondensor pada Pirolisator Sistem Multiple Condenser Biomassa Kulit Buah Nipah (Nypa fruticans W.)

Abstract

Indonesia has abundant energy resources, one of which is nypa fruit husk biomass (Nypa fruticans W.) that can be utilized as a raw material for renewable energy production. This study aimed to examine the effect of condenser pipe diameter variation on a multiple-condenser pyrolyzer system using nypa fruit husk biomass. The research was conducted using a factorial Completely Randomized Design (CRD) with two factors, namely condenser pipe diameter (3/8 inch; 4/8 inch; and 5/8 inch) and pyrolysis temperature (300°C, 350°C, and 400°C), with three replications for each treatment. The observed parameters included effective capacity of the tool, energy consumption, yield, and economic analysis consisting of production cost of liquid smoke, Break Even Point (BEP), Net Present Value (NPV), and Internal Rate of Return (IRR). The results showed that the 4/8 inch condenser pipe diameter at 400°C was the most optimal treatment, producing an effective capacity of 0.68 liters/hour and a yield of 68%. The highest energy consumption was obtained at the 5/8 inch condenser pipe diameter and 400°C, amounting to 276,672.8 kJ/kg. The economic analysis indicated a liquid smoke production cost of IDR 40,485.03 per liter and a BEP of 371.62 liters/year. The NPV value reached IDR 318,206,840/year and the IRR was 44.93%, indicating that the equipment was feasible to operate and remains profitable.