Usage of plastics has been ever increasing and now poses a tremendous threat to the environment. Millions of tons of plastics are produced annually worldwide, and the waste products have become a common feature at overflowing bins and landfills. The process of converting waste plastic into value-added fuels finds a feasible solution for recycling of plastics. Thus, two universal problems such as problems of waste plastic management and problems of fuel shortage are being tackled simultaneously. Converting waste plastics into fuel holds great promise for both the environmental and economic scenarios. In order to carry out the study on plastic wastes, the pyrolysis process was used. Pyrolysis runs without oxygen and in high temperature of about 250-300 °C. The fuel obtained from plastics is blended with B20 algae oil, which is a biodiesel obtained from microalgae. For conducting the various experiments, a 10-HP single-cylinder four-stroke direct-injection water-cooled diesel engine is employed. The engine is made to run at 1500 rpm and the load is varied gradually from 0 to 100 %. The performance, emission and combustion characteristics are observed. The BTE was observed to be higher with respect to diesel for plastic-biodiesel blend and biodiesel blend by 15.7 and 12.9 %, respectively, at full load. For plastic-biodiesel blend, the emission of UBHC and CO decreases with a slight increase in NO x as compared to diesel. It reveals that fuel properties are comparable with petroleum products. Also, the process of converting plastic waste to fuel has now turned the problems into an opportunity to make wealth from waste.
This study is an attempt at achieving diesel fuel equivalent performance from diesel engines with maximum substitution of diesel with renewable fuels. In this context the study has been designed to analyze the influence of B20 algae biodiesel as a pilot fuel in a biodiesel biogas dual fuel engine, and results are compared to those of biodiesel and diesel operation at identical engine settings. Experiments were performed at various loads from 0 to 100 % of maximum load at a constant speed of 1500 rpm. In general, B20 algae biodiesel is compatible with diesel in terms of performance and combustion characteristics. Dual fuel mode operation displays lower thermal efficiency and higher fuel consumption than for other fuel modes of the test run across the range of engine loads. Dual fuel mode displayed lower emissions of NOx and Smoke opacity while HC and CO concentrations were considerably higher as compared to other fuels. In dual fuel mode peak pressure and heat release rate were slightly higher compared to diesel and biodiesel mode of operation for all engine loads.
Bio-fuel is a clean burning fuel made from natural renewable energy resource; it operates in C. I. engine similar to the petroleum diesel. The rising cost of diesel and the danger caused to the environment has led to an intensive and desperate search for alternative fuels. Among them, animal fats like the fish oil have proven to be a promising substitute to diesel. In this experimental study, A computerized 4-stroke, single cylinder, constant speed, direct injection diesel engine was operated on fish oil-biodiesel of different blends. Three different blends of 10, 20, and 30 % by volume were used for this study. Various engine performance, combustion and emission parameters such as Brake Thermal Efficiency, Brake Specific Fuel Consumption, Heat Release Rate, Peak Pressure, Exhaust Gas Temperature, etc. were recorded from the acquired data. The data was recorded with the help of an engine analysis software. The recorded parameters were studied for varying loads and their corresponding graphs have been plotted for comparison purposes. Petroleum Diesel has been used as the reference. From the properties and engine test results it has been established that fish oil biodiesel is a better replacement for diesel without any engine modification.
Environmental concerns and reduction in the availability of petroleum fuels have driven interest in the search for alternative fuels for IC engines. In order to overcome the problems associated with the use of petroleum based diesel fuels, a renewable and eco-friendly biofuel can be used for partial replacement of diesel fuels. Hence in this work, feasibility of using fish oil biodiesel was investigated. The important fuel properties were evaluated. Experimental tests were carried out to evaluate the performance, emissions and combustion characteristics. A single cylinder 10 HP, constant speed, water cooled diesel engine was used for experimentation with B20 fish diesel as fuel. This study expanded to achieve diesel equivalent performance from diesel engines with maximum replacement of diesel with renewable fuels. In this context the study analysed the influence of B20 fish biodiesel as a pilot fuel in a biodiesel biogas dual fuel engine. The results of dualfuel mode operation study are compared to those for B20 diesel operation at identical engine settings. Further for baseline comparison, the results of biodiesel and dual fuel mode of operation are compared to those of standard diesel run. Experiments were performed at various load conditions from 0 to 100% of maximum load at a constant speed of 1500 rpm. In general, B20 fish biodiesel is compatible with diesel in terms of performance and combustion characteristics. The exhaust emissions like CO and HC were significantly less, and NO x is slightly higher, than diesel fuel at all engine load conditions. Dual fuel mode of operations shows lower thermal efficiency and higher fuel consumption for other fuel mode of test run at all ranges of engine loads. Significantly lower in NO x and smoke capacity and HC, CO concentrations were considerably higher for dual fuel mode as compared to other fuels. In dual fuel mode, peak pressure and heat release rate were slightly higher compared to diesel and biodiesel mode of operation for all engine loads.
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