Producing and using renewable fuels for transportation is one approach for sustainable energy future for the world. With ever growing concerns on environmental pollution, energy security, and future oil supplies, the global community is seeking non petroleum based alternative fuels, along with more advanced energy technologies (e.g., fuel cells) to increase the efficiency of energy use. The most promising alternative fuel will be the fuel that has the greatest impact on society. The major impact areas include well-to-wheel greenhouse gas emissions; non-petroleum feed stocks, well-to-wheel efficiencies, fuel versatility, infrastructure, availability, economics, safety. During the past year, a systematic experimental study of various oxygenated molecules on engine performance was carried out using oxygenates from the main functional families: ethers, esters, aldehydes, alcohols and ketones. Diethyl ether appears as a considerable choice among many available oxygenates as a supplementary fuel of choice for eliminating dependency on petroleum. DEE is also recently reported as a renewable fuel and to a low emission high quality diesel fuel replacement.
[...] The use of Diethyl ether (DEE) as oxygenated additives to the diesel or biodiesel fuel engine appears to be promising approach to reduce soot and particulate emission because it contain about 21% oxygen by weight. Also this fuel can be produced from biological feedstock which is generally considered as renewable. Among the alternative fuels, biodiesel and ethanol are most widely studied biofuels for diesel engine and have received considerable attention in recent years. Ethanol, however, is not a high quality compression ignition fuel. [...]
[...] The properties of the test fuels are given in Table 4.1 & Diesel C8 to C20 ~ 40- (mm2/s) 55-58 Biodiesel - Diethyl ether C2H5OC2H > Flammability limits, rich Flammability limits, lean Calorific value (KJ/kg) Ester content (wt Flash point Oxygen by wt) Sulfur content (wt ppm) Ash (wt Cloud Point Pour Point 9.5 TABLE 4.1 PROPERTIES OF DIESEL, BIO DIESEL AND THEIR BLENDS 5 RESULTS AND DISCUSSION 5.1 FOR TEST FUEL DEE AND DIESEL BLENDS 5.1 .1Brake Specific fuel Consumption Figure 2 show the brake specific fuel consumption (BSFC) variation for the Diesel, Diesel-DEE blends with respect to Brake power. [...]
[...] Due to lower HC emission in exhaust leads the better combustion and hence smoke density is reduced even at higher load by addition of DEE in diesel For test fuel DEE & Biodiesel Blends: Brake Specific Fuel Consumption The variation of Brake specific consumption in case of various blends of DEE and BioDiesel shown in fig 3. It has been found that fuel consumption is reduced with increased in load. It was least for the 90% Biodiesel+10% DEE. The value is 235.71 gm/kwhr. [...]
[...] However in case of a biodiesel brake specific consumption is slight higher than diesel with 10% DEE and Biodiesel blend due to lower heating value of biodiesel. Due to higher oxygen content of DEE it helps in enhancement of premixed combustion and improvement in diffusion combustion the brake thermal efficiency increased by with blend of DEE and Diesel. In case of a biodiesel blends brake thermal efficiency is only higher at higher load in blend of 10% DEE and BioDiesel. The exhaust gas temperature was almost remains lower as compared to diesel in all blends of DEE and Diesel as well as BioDiesel. [...]
[...] CO emission is reduced with increased in BP due to high oxygen content in mixture but again it increased steeply at further higher loading. In case of DEE blends with Diesel it is 0.2 ppm which is almost less than diesel fuel Smoke density Fig 12 show the variation of Smoke density with respect to BP for DEE and diesel blends. There were lower smoke in all blends than base fuel. It was found reduction in DEE blend with Diesel than the base fuel. [...]
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