A comparative analysis of flame temperature, radiation behaviors and NOx emission of an oil burner fueled with nano biodiesel blend fuel containing suspended energetic and non-energetic metal nanoparticles

2021 ◽  
pp. 1-16
Author(s):  
S.H. Poorhoseini ◽  
Maryam Ghodrat
Keyword(s):  
Experimental Approach ◽  
Flame Temperature ◽  
Nucleation And Growth ◽  
Nox Emission ◽  
Upstream Region ◽  
Soot Particles ◽  
Fuel Droplets ◽  
Biodiesel Blend ◽  
Temperature Radiation ◽  
Blend Fuel

Abstract This study presents a comparative experimental approach to analyze flame temperature, emissions and radiation behaviors of an oil furnace fueled with nano biodiesel blend fuel containing suspended energetic and non-energetic nanoparticles (NPs). Iron NPs were used as energetic nanoparticles and alumina (Al2O3) was selected as non-energetic NPs. A dilute homogeneous mixture (500 ppm) was provided from each NPs in B20 blend fuel. The fuels were burned in an oil burner subsequently and Infrared Radiation (IR) images of flame, profiles of flame temperature, luminous and total radiation and NOx and CO emissions were gauged and compared. Measurements showed that both NPs improve the evaporation rate of fuel droplets and displace the peak of flame temperature to the flame upstream region. Moreover, nano biodiesel blend fuel containing energetic iron NPs elevates flame temperature while the non-energetic alumina NPs reduce the peak of flame temperature. In Addition, both NPs strengthen the nucleation and growth of intermediate soot particles. These fuels containing suspended particles, also lead to an increase in the intermediate soot particles content of flame and flame emissivity. This increases IR, luminous and total flame radiation. The improvement of average flame radiative flux for nano biodiesel blend fuel containing energetic iron NPs and non-energetic alumina NPs are as high as 25% and 10%, respectively. Also, using energetic iron NPs and non-energetic alumina NPs in B20 fuel reduces the NOx emission by 13% and 11%, respectively.

Determination of Size of Fuel Droplets and Soot Particles in a Diesel Engine by Broadband Extinction and Scattering Spectroscopy

2001 ◽  
Vol 18 (5/6) ◽  
pp. 235-242 ◽  
Author(s):  
Simona Silvia Merola ◽  
Bianca M. Vaglieco ◽  
Silvano Consales ◽  
Felice E. Corcione ◽  
Giuseppe Formisano
Keyword(s):  
Diesel Engine ◽  
Soot Particles ◽  
Fuel Droplets

Effect of Cetane Number Improver on Emission Characteristics of Methanol/Diesel Blend Fuel

2012 ◽  
Vol 512-515 ◽  
pp. 1888-1891
Author(s):  
Jia Yi Du ◽  
Wei Xun Zhang ◽  
Deng Pan Zhang ◽  
Zhen Yu Sun
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Cetane Number ◽  
Nox Emission ◽  
Fuel Load ◽  
Emission Characteristics ◽  
Soot Emission ◽  
Maximum Torque ◽  
Blend Fuel ◽  
Co Emission

The influence of cetane number improver on emission characteristics of diesel engine fueled with methanol/diesel blend fuel was investigated. Methanol/diesel blend fuel was prepared, in which the methanol content is 10%, different mass fraction (0%，0.5%) of cetane number improver were added to the blend fuel. Load characteristic experiments at maximum torque speed of the engine were carried out on 4B26 direct injection diesel engine. The results show that, compared with the engine fueled with diesel, the CO emission increases under low loads and reduces under medium and high loads, the HC emission increases, the NOx emission decreases under medium and low loads and increases under high loads, the soot emission reduces significantly when the diesel engine fueled with blends. When cetane number improver was added to blends, the CO and NOx emission reduces, the HC emission decreases, the soot emission increases to some extent compared with the methanol/dieselblend fuel without cetane number improver.

COMPUTATIONAL STUDY ON COMBUSTION AND EMISSION CHARACTERISTIC OF PILOTED FLAMES BY VARYING COMPOSITION CO2 OF SIMULATED BIOGAS

2017 ◽  
Vol 79 (7-3) ◽  
Author(s):  
Khor Chin Keat ◽  
M. F. Mohd Yasin ◽  
M. A. Wahid ◽  
A. Saat ◽  
A. S. Md Yudin
Keyword(s):  
Computational Study ◽  
Flame Temperature ◽  
Dilution Effect ◽  
Co2 Concentration ◽  
Nox Emission ◽  
Combustion Model ◽  
Emission Characteristic ◽  
Measured Temperature ◽  
Flamelet Model ◽  
Detailed Chemistry

This study investigates the performance of flamelet model technique in predicting the behavior of piloted flame.A non-premixed methane flame of a piloted burner is simulated in OpenFOAM. A detailed chemistry of methane oxidation is integrated with the flamelet combustion model using probability density function (pdf) approach. The turbulence modelling adopts Reynolds Average Navier Stokes (RANS) framework with standard k-ε model. A comparison with experimental data demonstrates good agreement between the predicted and the measured temperature profiles in axial and radial directions. Recently, one of major concern with combustion system is the emission of pollution specially NOx emission. Reduction of the pollutions can be achieved by varying the composition of CO2 in biogas. In addition, the effect of the composition of biogas on NOx emission of piloted burner is still not understood. Therefore, understanding the behavior composition of CO2 in biogas is important that could affect the emission of pollution. In the present study, the use of biogas with composition of 10 to 30 percent of CO2 is simulated to study the effects of biogas composition on NOx emission. The comparison between biogas and pure methane are done based on the distribution of NOx, CO2, CH4, and temperature at different height above the burner. At varying composition of CO2 in biogas, the NOx emission for biogas with 30 percent CO2 is greatly reduced compared to that of 10 percent CO2. This is due to the reduction of the post flame temperature that is produced by the dilution effect at high CO2 concentration.  

Transmission of trace metals from fuels to soot particles: An ICP-MS and soot nanostructural disorder study using diesel and diesel/Karanja biodiesel blend

Fuel ◽  
2020 ◽  
Vol 280 ◽  
pp. 118631 ◽  
Author(s):  
Pranay P. Morajkar ◽  
Moataz K. Abdrabou ◽  
Abhijeet Raj ◽  
Mirella Elkadi ◽  
Sasi Stephen ◽  
...  
Keyword(s):  
Trace Metals ◽  
Soot Particles ◽  
Icp Ms ◽  
Biodiesel Blend

Effects of the biodiesel blend fuel on aldehyde emissions from diesel engine exhaust

2008 ◽  
Vol 42 (5) ◽  
pp. 906-915 ◽  
Author(s):  
Chiung-Yu Peng ◽  
Hsi-Hsien Yang ◽  
Cheng-Hang Lan ◽  
Shu-Mei Chien
Keyword(s):  
Diesel Engine ◽  
Engine Exhaust ◽  
Diesel Engine Exhaust ◽  
Biodiesel Blend ◽  
Blend Fuel

Control-Oriented Physics-Based NOX Emission Model for a Diesel Engine With Exhaust Gas Recirculation

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Saravanan Duraiarasan ◽  
Rasoul Salehi ◽  
Anna Stefanopoulou ◽  
Siddharth Mahesh ◽  
Marc Allain
Keyword(s):  
Diesel Engine ◽  
Test Procedure ◽  
Flame Temperature ◽  
Exhaust Gas Recirculation ◽  
Nox Emission ◽  
Injection Timing ◽  
Exhaust Gas ◽  
Engine Control ◽  
Gas Recirculation ◽  
The Impact

Abstract Stringent NOX emission norm for heavy duty vehicles motivates the use of predictive models to reduce emissions of diesel engines by coordinating engine parameters and aftertreatment. In this paper, a physics-based control-oriented NOX model is presented to estimate the feedgas NOX for a diesel engine. This cycle-averaged NOX model is able to capture the impact of all major diesel engine control variables including the fuel injection timing, injection pressure, and injection rate, as well as the effect of cylinder charge dilution and intake pressure on the emissions. The impact of the cylinder charge dilution controlled by the engine exhaust gas recirculation (EGR) in the highly diluted diesel engine of this work is modeled using an adiabatic flame temperature predictor. The model structure is developed such that it can be embedded in an engine control unit without any need for an in-cylinder pressure sensor. In addition, details of this physics-based NOX model are presented along with a step-by-step model parameter identification procedure and experimental validation at both steady-state and transient conditions. Over a complete federal test procedure (FTP) cycle, on a cumulative basis the model prediction was more than 93% accurate.

Effect of Fuel Staged Proportion on NOX Emission Performance of Centrally Staged Combustor

2013 ◽  
Author(s):  
Fuqiang Liu ◽  
Yong Mu ◽  
Cunxi Liu ◽  
Jinhu Yang ◽  
Yanhui Mao ◽  
...  
Keyword(s):  
Equivalence Ratio ◽  
Flow Reactor ◽  
Flame Temperature ◽  
Plug Flow ◽  
Combustion Process ◽  
Chemical Reactor ◽  
Nox Emission ◽  
Wide Range ◽  
Pilot Fuel ◽  
Pollution Emissions

The low NOX emission technology has become an important feature of advanced aviation engine. A wide range of applications attempt to take advantage of the fact that staged combustion operating under lean-premixed-prevaporized (LPP) conditions can significantly decrease pollution emissions and improve combustion efficiency. In this paper a scheme with fuel centrally staged and multi-point injection is proposed. The mixing of fuel and air is improved, and the flame temperature is typically low in combustion zone, minimizing the formation of nitrogen oxides (NOX), especially thermal NOX. In terms of the field distribution of equivalence ratio and temperature obtained from Computational Fluid Dynamics (CFD), a chemical reactor network (CRN), including several different ideal reactor, namely perfectly stirred reactor (PSR) and plug flow reactor (PFR), is constructed to simulate the combustion process. The influences of the pilot equivalence ratio and percentage of pilot/main fuel on NOX and carbon monoxide (CO) emissions were studied by Chemical CRN model. Then the NOX emission in the staged combustor was researched experimentally. The effects of the amount of pilot fuel and primary fuel on pollution emissions were obtained by using gas analyzer. Finally, the effects of pilot fuel proportion on NOX emission were discussed in detail by comparing predicts of CRN and experimental results.

scholarly journals NOx Emission Characteristics of a Catalytic Combustor Under High-Temperature Conditions

1995 ◽  
Author(s):  
Martin Valk ◽  
Nicolas Vortmeyer ◽  
Günter Kappler
Keyword(s):  
High Temperature ◽  
Flame Temperature ◽  
Plug Flow ◽  
Nox Emission ◽  
Thermal Reactor ◽  
Emission Characteristics ◽  
Nox Emissions ◽  
Temperature Conditions ◽  
Conversion Rates ◽  
Catalytic Combustor

A catalytic combustor concept with short catalyst segments and a thermal reactor is investigated with regard to NOx production of this concept under high-temperature conditions. The maximum combustor exit temperature was more than 1800 K with catalyst temperatures below 1300 K. For combustion of iso-octane, NOx emissions of 4 ppm (dry, 15% O2) at a flame temperature of 1800 K were measured. No significant influence of catalyst length, reference velocity and overall residence time on NOx emissions was observed. Additionally, the test combustor was fuelled with commercial diesel and kerosene (Jet-A). In this case, NOx emissions were noticeable higher due to fuel-bound nitrogen. The emissions measured were for diesel, 12 ppm, and for kerosene, 7 ppm, (each dry, 15% O2), again at a flame temperature of 1800 K. To evaluate the conversion ratio of fuel-bound nitrogen to NOx iso-octane was doped with various amounts of ammonia and metyhlamine. The conversion rates were 70 to 90%, with a slight tendency to lower values (50%) for nitrogen mass fractions above 0.1%. Considering the NOx emission level of actual premix burners, the lower emission value of the presented catalytic combustor results from a perfect premixed plug-flow combustion system incorporating a catalyst herein and not from a specific advantage of the principle of catalytic combustion itself. Again similar to a premix-combustor are the NOx emission characteristics in the case of lean combustion of nitrogen bound fuels, which yield very high conversion rates.

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