Uji Eksperimental Performansi Mesin Diesel Stasioner Menggunakan Bahan Bakar Biodiesel Minyak Jelantah (WCO) dan Solar Konsentrasi B10 dan B20 dengan Variasi Putaran Mesin

Abstract

The objective of this research is to explore renewable energy sources as viable alternatives to fossil fuels, which are becoming increasingly scarce due to a 48% surge in global energy consumption projected for 2040. The primary motivation for this investigation stems from pressing environmental concerns, notably climate change and pollution. The study focuses on a comparative analysis between two fuel compositions: 90% diesel + 10% biodiesel (B10) and 80% diesel + 20% biodiesel (B20), aimed at assessing their feasibility and dependability as substitutes. To evaluate the performance, the research employed the Dongfeng R175 stationary engine with these fuel blends. Several fuel properties were scrutinized, including density, viscosity, flash point, cetane number, and heating value. The experimental setup used pure diesel, B10 biodiesel, and B20 biodiesel in the Dongfeng TG175A stationary diesel engine. Gas emission measurements were conducted for CO, O2, NOx, and CO2 utilizing a Flue Gas Analyzer E-4500 S. The research methodology primarily relied on experimental approaches. Results indicate that diesel exhibits the highest density, viscosity, and heating value, reaching 45418 kj/kg. Nevertheless, B20 experienced a 2.67% reduction in calorific value compared to pure diesel. Regarding engine performance, pure diesel demonstrated superior outcomes, whereas B20 biodiesel showcased reduced torque, power, and thermal efficiency. However, the use of B20 biodiesel exhibited a potential decrease in CO and NOx emissions while potentially increasing CO2 and O2 levels within an engine speed range of 1700 to 1850 rpm.