The objective of this research is to study the combustion characteristic of a low-pressure vertical port burner using computational fluid dynamics (CFD). The simulation model was created using Fluent 6.3 in 3D-model of the same size of the burner. The CFD results were verified by measuring the temperature around the burner head and a vessel. Moreover the results of conventional vertical port burner having the swirl angle of 90o and the inclination angle of 90o (CB-S90I90) and two swirl port burners (SB) being SB-S90I13 and SB-S30I90 were compared. The temperatures obtained from CFD and experiments were similar which the error was less than 9%. From the CFD’s results the temperature and heat flux of the SB-S90I13 burner were higher than those of the CB-S90I90 burner. The maximum temperature and heat flux of SB-S90I13 burner were 1445 K and 5291 W/m2 respectively. It was implied that the combustion characteristic and heat transfer to the vessel of SB-S90I13 burner was better than that of CB-S90I90 burner. It was resulted that the thermal efficiency of SB-S90I13 burner was better than that of CB-S90I90 burner which was the percentage energy saving of 6.93%.

This research aimed to study powe generation from heat loss strove by thermoelectric generator unit. As cooking with a gas stove can cause heat loss between the stove and the cookware this heat loss from gas stove can be converted into the electricity. For the experiment the researcher used a gas stove model KB5 installed with thermoelectric plate model TEG1-241-1.4-1.2 connected in a series to the power of 4 modules. Then experimental conditions of the gas pressure in the gas strove were set at 0.1 0.2 0.3 0.4 0.5 and 0.6 kg/cm2 respectively while the amount of mixed air was constant during the experiment. The results showed that when the gas pressure was at 0.6 kg2 the temperatures of the hot side and cold side of the thermoelectric generator was equal 250.5oC and 65.5oC respectively. Lt also generated the highest electric power of 53.3 watts. The power conversion efficiency was 5.3% at 38.1 Volts with 1.4 Amperes. In addition when electric was connected to a thermoelectric generator unit with 12 VDC 7-watt LED bulb the gas pressure in the gas stove were set at 0.3 0.4 0.5 and 0.6 kg/cm2 respectively was affected by the difference between the heating temperature and the cold temperature in the range of 185o C that could lighten up LED bulb.