Investigation on the Performance and Emissions of Aloevera Blends with EGR System
International Journal of Innovative Research in Science Engineering and Technology
With the enormous energy demand and environmental concern the interest on the alternate fuels to the diesel engine has been increased. This simulated the world wide search for the renewable, less pollutant and agricultural based alternate fuel. In our country majority of the people lives in the villages and depends on the agriculture. Further, if this alternate fuel is prepared by the farmers, they become independent for their needs. Among all the crops, aloevera is best based on its
... d on its properties. In the diesel engines much amount of heat is lost in exhaust. This heat can be utilized with exhaust gas recirculation system. The present experimental work is focused on the performance and emissions of the aloevera and diesel blends with EGR system. Here the EGR is maintained at constant (5%). The experiment conducted on single cylinder, four stroke, constant speed, water cooled, electric loaded, D.I Diesel Engine. The acquired data is analyzed for various blends of aloevera and diesel blends and the same is presented Preparation of Aloevera biodiesel: Aloevera is a very short stemmed succulent plant growing to 60-100 cm tall, spreading by offsets. The leaves are thick and fleshy, green to grey green with some varieties showing white flecks on the upper and lower stem surfaces. The aloevera plant is shown in the following figure 1 aloevera gel is shown in the following figure 2. the BTE is increased initially but at rated load it is decreased due to the lower calorific value which reduces the thermal efficiency. Hence it is observed that, at rated load the η bth for B20 is 27.93%. The η bth for B10, B30 and B40 are decreased by 15%, 0.5% and 1% respectively compared with B20. For B10 the CO 2 is increased by 8.9%. For B30, B40 the CO 2 is decreased by 2.2%, 4.1% respectively compared with B20. Graph 5: Brake Power vs Hydro Carbons Graph 5 shows the variation of HC for various blends of aloevera with the BP. It is observed that, the HC levels are reduced when compared to diesel while the compositions of aloevera blends are increased due to the oxygen supplementary are higher in biodiesel. Hence it is observed that, at rated load the HC for B20 is 22.45 ppm. For B10 the HC is increased by 0.4%. For B30, B40 the HC is decreased by 1.3%, 2.8% respectively compared with B20. Graph 7: Brake Power vs Nitrogen Oxide Graph 7 shows the variation of NO X for various blends of aloevera with the BP. It is observed that, the NO X is reduced when compared to diesel while the compositions of aloevera blends are increased due to increasing the specific heat in the combustion chamber. So it reduces the higher flame temperatures at rated load. Hence it is observed that, at rated load the NO X for B20 is 116.5. For B10 the NO X is increased by 1.3%. For B30, B40 the NO X is decreased by 9.4%, 18% respectively compared with B20. III. CONCLUSION The conclusions are given below after the analysis of Performance and Emissions parameters of aloevera and diesel blend on C.I engine with exhaust gas re-circulation. The BSFC for diesel is increased by 5% compared with B20 aloevera. The η bth for B20 aloevera is 27.93%. The η bth for diesel is decreased by14% compared with B20 aloevera. The η vol for B20 aloevera is 54.57%. The η vol for diesel is increased by 3% to B20 aloevera. The CO 2 for B20 aloevera is 1.34. The CO 2 for diesel is increased by 25% compared with B20 aloevera. The HC for B20 aloevera is 22.45 ppm. The HC for diesel is almost similar compared with B20 aloevera. The O 2 for B20 aloevera is 19.82. The O 2 for diesel is increased by 1% compared with B20 aloevera. The NO X for B20 aloevera is 116.5. The NO X for diesel is increased by 8.5% compared with B20 aloevera. Hence it is proved experimentally, for B20 aloevera the Performance is more and Emissions are reduced greatly.