Carbon monoxide in dwellings and other premises and the combustion performance of gas-fired appliances

Syngas from biomass residues is an alternative fuel to address the ever-increasing fossil fuel supply problem and the issue of releasing toxic gases from the fossil fuel burning process. Syngas is also a renewable fuel and features environmentally friendly fuel. This study was conducted to investigate the performance of the syngas produced from oil palm shells (PKS) using fluidized bed gasifier. In this study, the produced syngas was tested for its combustion performance from the aspect of gas combustion temperature and resulting emission concentrations such as nitrogen oxide (NOx), carbon monoxide (CO) and sulfur dioxide (SO2). The resulting syngas was studied at different ratio of air velocities to fuels. From the test, the ratio of velocity of air to fuel affects the gas combustion temperature and emission emission concentration. By increasing the air velocity to fuel ratio during the gasification process produces more positive effects primarily in improving the temperature of the gas burner combustion and reducing carbon monoxide (CO) emissions. However, the concentration of sulfur dioxide release (SO2) and nitrogen oxide (NOx) increase.

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KESAN PEMBAKARAN PADA KEADAAN NISBAH KESETARAAN ɸ=0.8333 MENGGUNAKAN DWI PEMUSAR ALIRAN JEJARIAN

Jurnal Teknologi ◽

10.11113/jt.v79.9855 ◽

2017 ◽

Vol 79 (2) ◽

Author(s):

Muhammad Roslan Rahim ◽

Mohammad Nazri Mohd Jaafar

Keyword(s):

Carbon Monoxide ◽

Nitrogen Oxide ◽

Equivalence Ratio ◽

The Other ◽

Combustion Performance ◽

Hot Air ◽

Unburned Hydrocarbons

Formation of nitrogen oxide (NOx), carbon monoxide (CO) and other emissions is increasing dramatically in the atmosphere. Due to this pressing issue, a study on combustion performance was conducted using a double radial swirler. In this study, a weak swirler with an angle of 30º is set as a primary swirler and strong swirlers each with an angle of 40º, 50º and 60º are set as secondary swirler. Combinations of these swirlers have increased internal recirculation of hot air and help to complete the mixing of fuel and air during combustion. Results show that the combination of 30º/60º swirler produced the best, more stable and shorter flame than the other combinations. Formation of NOX from the 30º/60º swirlers at equivalence ratio of 0.8333 is 27.3% lower than that from the combined 30º/40º swirlers. Other emissions such as CO, CO2 and UHC (Unburned Hydrocarbons) also show a reduction of 12.71%, 10.6% and 5.3%, respectively in the 30º/60º swirlers compared to those from the 30º/40º swirlers.

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Experimental investigation on combustion, performance, and emissions characteristics of butanol as an oxygenate in a spark ignition engine

Advances in Mechanical Engineering ◽

10.1177/1687814016688848 ◽

2017 ◽

Vol 9 (2) ◽

pp. 168781401668884 ◽

Cited By ~ 4

Author(s):

Yu Li ◽

Jinke Gong ◽

Wenhua Yuan ◽

Jun Fu ◽

Bin Zhang ◽

...

Keyword(s):

Carbon Monoxide ◽

Nitrogen Oxides ◽

Thermal Efficiency ◽

Alternative Fuel ◽

Spark Ignition ◽

Spark Ignition Engine ◽

Brake Thermal Efficiency ◽

Combustion Performance ◽

Performance And Emissions ◽

Unburned Hydrocarbons

Ethanol is known as the most widely used alternative fuel for spark-ignition engines. Compared to it, butanol has proved to be a very promising renewable fuel in recent years for desirable properties. The conjoint analysis on combustion, performance, and emissions characteristics of a port fuel injection spark-ignition engine fueled with butanol–gasoline blends was carried out. In comparison with butanol–gasoline blends with various butanol ratio (0–60 vol% referred as G100~B60) and conventional alcohol alternative fuels (methanol, ethanol, and butanol)–gasoline blends, it shows that B30 performs well in engine performance and emissions, including brake thermal efficiency, brake-specific fuel consumption, carbon monoxide, unburned hydrocarbons, and nitrogen oxides. Then, B30 was compared with G100 under various equivalence ratios ( Φ = 0.83–1.25) and engine loads (3 and 5-bar brake mean effective pressure). In summary, B30 presents an advanced combustion phasing, which leads to a 0.3%–2.8% lower brake thermal efficiency than G100 as the engine was running at the spark timing of gasoline’s maximum brake torque (MBT). Therefore, the sparking timing should be postponed when fueled with butanol–gasoline blends. For emissions, the lower carbon monoxide (2.3%–8.7%), unburned hydrocarbons (12.4%–27.5%), and nitrogen oxides (2.8%–19.6%) were shown for B30 compared with G100. Therefore, butanol could be a good alternative fuel to gasoline for its potential to improve combustion efficiency and reduce pollutant emissions.

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