Performance of a diesel engine with blends of biodiesel (from a mixture of oils) and high-speed diesel

Abstract

Installation layout of wind turbines plays a prominent role in the design of every wind farm. Thus, the wind farm layout optimization problem is proposed to maximize the total power output with the minimum cost. In this research, Kahrizak region in Tehran province of Iran is selected as a windy region and its real wind speed data are gleaned. Three different scenarios are also considered, with various number of generations and populations for GA parameters, effective distances, and longitude and latitude distances of turbines from each other. Among these scenarios, the best result is obtained for the one in which the longitudinal distance between turbines is greater than the latitudinal distance. By observing the wind rose of Kahrizak region, it is observed that the dominant wind direction of the region is toward the east and south-east. Therefore, by increasing the longitudinal distance of the turbines from each other, the efficiency can be improved and the turbine layout becomes more realistic. In this case, the efficiency rate and normalized cost of turbines are 89.5% and 37.4, respectively, and also 56 turbines are needed. The amounts of efficiency and power output are very convenient for real wind speed data of a region.

Combustion, Performance, and Emission Evaluation of a Diesel Engine with Biodiesel Like Fuel Blends Derived From a Mixture of Pakistani Waste Canola and Waste Transformer Oils

“…The reason for the shorter ignition delay may be the higher cetane number of BLF blends and the higher oxygen content in biodiesel contents of the BLF fuel mixture. This is agreed by Chuah et al [31] who reported that a higher cetane number and higher oxygen content of biodiesel than diesel exhibits a shorter ignition delay time and allows for better combustion of the fuel. Figure 5 shows HRR (heat release rate) corresponding to every crank angle for BLF fuel blends and diesel at maximum engine load conditions.…”

“…BSFC was found to decrease with an increase of engine load conditions. This is attributed to the fact that the engine faces fewer amounts of heat losses at higher loads [31]. Figure 7 demonstrates the variations of the brake specific fuel consumption with engine load for petroleum diesel and the blends BLF15, BLF20, and BLF25.…”

“…BSFC was found to decrease with an increase of engine load conditions. This is attributed to the fact that the engine faces fewer amounts of heat losses at higher loads [31]. …”

Effect of Butanol Blends on Nano Particle Emissions from a Stationary Conventional Diesel Engine

“…However, these fuels are not suitable for compression ignition (CI) engines due to their lower cetane number. Several studies (Ramadhas et al, 2006;Raheman and Ghadge, 2008;Rounce et al, 2012;Ye and Boehman, 2012;Raheman et al, 2013;Dhar and Agarwal, 2014) summarized that biodiesel can be used as alternative fuel in CI engines and it also lower the emissions.…”

Performance and Emission Characteristics of an IDI Diesel Engine Fuelled Biodiesel (Rubber Seed Oil and Palm Oil Mix) Diesel Blends

“…They claimed that BTE improved, smoke opacity; THC and carbon monoxide were reduced. Raheman et al [12] tested soot, performance and emission on a single cylinder diesel engine using biodiesel blends, B10 and B20 obtained from a mixture of mahua and simarouba oils at 50:50 blend ratio with high speed diesel. The results indicated that BSFC and NOx were increased while BTE, CO and HC decreased.…”