Energy efficiency of engine-generator set using biofuels under varied loads

摘要: Abstract The experiment was conducted at the Experimental Center in Agricultural Engineering (NEEA), State University of West Parana (UNIOESTE), Cascavel – Parana, with a totally randomized experimental design. Treatments used were petroleum diesel and three different types biodiesel: crambe (Crambe abyssinica Hochst), soybean (Glycine (L.) Merrill) waste frying oil. biodiesel its pure form (B100) binary mixtures B10, B20 B50. Resistive loads 1, 2, 3, 4, 5 kW for each type fuel, total five replications. Specific consumption (SC) energy efficiency (EE) evaluated. best SC levels achieved diesel, 349 g kW h−1 under load 5 kW, followed by CB20-2, 524 g kW h−1 CB50-3, 433 g kW h−1. Biodiesel presented values close to those as resistive increased, what indicates that use operations closer nominal capacity is more efficient. Among forms used, oil-based lower some did not present significant differences (Tukey 5%) from diesel's SC, such CB20-4, 383 g kW h−1 CB10-5, 367 g kW h−1. found DI-5 (25.6%), CB-100-5 (25.5%), CB50-5 (25.0%), SB100-5 (24.8%) WFOB100-5 (24.6%). Pure tends better EE than study. CB100 9.9%, 17.8%, 21.8%, 24.3% 25.5%, according respectively. Regarding biofuels assessed, diesel. higher 3 4 kW.