Performance and emission characteristics of micro gasifier based cook stove using solid biomass Melia dubia and Casuarina

2021 ◽  
Author(s):  
Omsakthivel U ◽  
Lakshmanan T ◽  
Sekar S ◽  
Stalin B
Keyword(s):  
Carbon Monoxide ◽  
Particulate Matter ◽  
Thermal Efficiency ◽  
Large Scale ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Particulate Matter Emission ◽  
Water Boiling Test ◽  
Melia Dubia ◽  
Solid Biomass

Many large-scale improved cooking stove systems has been introduced in various developing countries to replace existing obsolete conventional biomass cooking stoves. Improved cooker stoves are one with higher performance and lower emissions. In this work, two solid biomass fuels such as Melia dubia and Casuarina are investigated on dry basis in a regular forced stove micro-gasifier. The effect of the Melia dubia and Casuarina fuel on thermal efficiency and emission reduction of the forced stove micro-gasifier is analysed using Water Boiling Test-4.2.3. The experimental results revealed that the thermal efficiency of the micro-gasifier stove for the fuel Melia dubia and Casuarina is 42% and 40% respectively. The fuel consumption of the micro-gasifier stove is estimated for the fuel Melia dubia is 86 g/l and Casuarina 90 g/l. The carbon monoxide and particulate matter emission Melia dubia is slightly lesser compared to the Casuarina. Emissions of carbon monoxide and particulate matter are detected for Melia dubia at 22 ppm and 0.05 mg/m3 and for Casuarina at 25 ppm and 0.07 mg/m3. Efficiency and emission values for selected fuels Melia dubia and Casuarina have shown promising results for the selected micro-gasifier.

Exergy and Energy Analysis of α-Fe2O3-Doped Al2O3 Nanocatalyst-Based Biodiesel Blends—Performance and Emission Characteristics

2021 ◽  
Vol 143 (12) ◽  
Author(s):  
A. Anderson ◽  
Amal M. Al-Mohaimeed ◽  
Mohamed Soliman Elshikh ◽  
T. R. Praveenkumar ◽  
M. Sekar
Keyword(s):  
Carbon Monoxide ◽  
Energy Analysis ◽  
Unsaturated Fatty Acids ◽  
Engine Performance ◽  
Volume Ratio ◽  
Emission Characteristics ◽  
Biodiesel Blends ◽  
Performance And Emission ◽  
High Area ◽  
Load Conditions

Abstract The current study emphasis on the engine performance and emission characteristics of rapeseed and soya biodiesel dispersion on a novel nanocatalyst at different concentrations of 25 ppm and 50 ppm. The results of this study were compared with those of conventional diesel at varying load conditions on a combustion ignition engine. An α-Fe2O3-doped Al2O3 was mixed with rapeseed biodiesel and soya biodiesel using an ultrasonicator at a frequency of 25 kHz. This study revealed that the incorporation of nanoparticles in biodiesel enhanced the performance of the blends by reducing the content of lignin and other unsaturated fatty acids. The improvement in the performance of the engine is mainly attributed to the high area-to-volume ratio of the nanocatalyst. Emissions of NOx. hydrocarbon and carbon monoxide during the combustion reaction increased significantly when nanoparticles were added at higher concentrations. Contrastingly, the emission of NOx in pure biodiesel was higher than that in conventional diesel. The addition of nanoparticles reduced CO emissions due to the presence of extra oxygen molecules and converted carbon monoxide into carbon dioxide. Soya seed biodiesel blends with 50 ppm nanoparticles showed better engine performance and emission characteristics as compared with all other blends.

Effect of Intake Charge Preheating and Equivalence Ratio in a Dual Fuel Diesel Engine Run on Biogas and Ethanol-Blended Diesel

2017 ◽  
Vol 140 (4) ◽  
Author(s):  
Achinta Sarkar ◽  
Ujjwal K. Saha
Keyword(s):  
Carbon Monoxide ◽  
Equivalence Ratio ◽  
Dual Fuel ◽  
Emission Characteristics ◽  
Maximum Torque ◽  
Brake Thermal Efficiency ◽  
Performance And Emission ◽  
Gaseous Fuels ◽  
Efficient Combustion ◽  
Overall Performance

Dual fuel diesel (DFD) engines have been gaining popularity due to the flexibility of using both bio and fossil liquid and gaseous fuels. Further, the efficient combustion in DFD mode with bio liquid and gaseous fuel can greatly reduce the greenhouse gas emissions as well as the dependency on fossil diesel. In recent times, a host of investigation has been done in normal dual fuel diesel (nDFD) mode with pure diesel and biogas. However, the engines with ethanol blended with diesel and intake charge (biogas–air mixture) with preheating have not been studied. In the present study, 5% ethanol blended with diesel (E5) and biogas with preheating are used in dual fuel engine (DFD-E5) to find their performance and emission characteristics. In order to have a direct comparison of performances, an engine with pure diesel (E0) and biogas with preheating is also tested in dual fuel mode (DFD-E0). In all the cases, the effect of total equivalence ratio on engine overall performance has also been investigated. In DFD-E5 mode, and at the maximum torque of 21.78 N·m, the brake thermal efficiency (BTE) increases by 2.98% as compared to nDFD mode. At the same torque, there is no trace of carbon monoxide (CO), whereas there is a reduction of hydrocarbon (HC) emission by 62.22% with respect to pure diesel (PD) mode. The nitrogen of oxides (NOx) is found to decrease in DFD modes in contrast to PD mode.

CO-PM Modeling for Particulate Matter Emission of Diesel Engines

2003 ◽  
Author(s):  
Pi-Qiang Tan ◽  
Jia-Xiang Lu ◽  
Kang-Yao Deng
Keyword(s):  
Experimental Data ◽  
Carbon Monoxide ◽  
Particulate Matter ◽  
Diesel Engines ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Formation Mechanisms ◽  
Electronic Control ◽  
Particulate Matter Emission ◽  
Good Agreement

In this study, a phenomenological model, that predicts the particulate matter emission (PM) of diesel engines, has been formulated. The CO-PM model is based on the formation mechanisms of PM and carbon monoxide (CO) of diesel engines. It can predict the emission concentration of PM via the emission concentration of CO. The calculation method of the model is simple and quick. To validate the model, experiments were carried out in two research diesel engines. Comparisons of the model results with the experimental data show good agreement. The model is useful for computer simulations of electronically controlled diesel engines, as well as electronic control unit (ECU) designs for diesel engines.

scholarly journals Experimental Evalution of Palmyra Oil Blends in VCR Diesel Engine by using EGR Systems.

2019 ◽  
Vol 8 (11) ◽  
pp. 2727-2734
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Compression Ratio ◽  
Thermal Efficiency ◽  
Power Efficiency ◽  
Alternative Fuels ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
Process Step ◽  
Performance And Emission

In present days industries are growing at a rapid rate and so as the usage of the diesel. The fossil fuels are limited in nature, the increased usage of diesel is resulting in the depletion of its reserves this gives rise to the need of alternative fuels. Due to low specific fuel consumption and supreme power efficiency it has vast applications compared to other fuels but NOX and smoke has seriously causing problem to environment. For this the Palmyra oil has same properties of diesel with varying compression ratios effects the performance and emission characteristics are evaluated. In this process step wise increase of CRs from 16 initially .Then increases EGRs of 0%,5% and 10% and studied performance and emission characteristics. There is improvement in engine efficiency during EGR increment and at low load .There is simultanesly decrease in NOX emissions . The single cylinder four stroke variable compression performance and emissions can be varied.. when fuel is pure diesel,b15and b35 of Palmyra oil is examined and bear with standard automobile usable diesel was conducted at compression ratio of 16:1 at the degrees of 19 and 23 degrees. The influence of Palmyra oil like compression ratio on fuel consumption ,brake thermal efficiency and exhaust gas emissions like NOx and hc has been investigated .the overall optimum is found to be b15 biodiesel –diesel blended for compression ratio of 16 at different exhaust gas recirculation such as 0, 5 and 10. The same experimentation is done for other blends B15 and B35 with palmyra oil. All the values are compared with each other. The configuration which achieved highest Break thermal efficiency is compared to the common diesel engine configuration used and the advantages and the disadvantages are listed out

scholarly journals Performance and Emission Characteristics of CI Engine with Modification in Fuel Injector

2020 ◽  
Vol 9 (3) ◽  
pp. 1604-1607
Keyword(s):  
Diesel Engine ◽  
Thermal Efficiency ◽  
Engine Performance ◽  
Injection Pressure ◽  
Emission Characteristics ◽  
Compression Ignition ◽  
Fuel Injector ◽  
Performance And Emission ◽  
Toxic Emission ◽  
Ci Engine

Work has been carried out using four stroke single cylinder diesel engine with retrofit attached with fuel injector and at optimum injection pressure 210 bar and 230 BTDC. The main purpose of using retrofit is to achieve HCCI (Homogeneous charge compression ignition) with which emissions can be reduced. Four Variants of retrofits were used and with V-cut type retrofit it was found that there is reduction in toxic emission like CO and NO but there was slight increase in HC emission when compared with normal fuel injector. Engine performance was compared with normal injector and injector with V-cut and it was found that Break thermal efficiency was increased by 0.25% at full load and 1.53% at 80% load and specific fuel consumption decreased by 0.01%.

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