Ditthaphat Tanpradit | Rajamangala University of Technology Krungthep (original) (raw)
Address: Bangkok, Krung Thep, Thailand
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FEAT Journal, 2020
This research is to experimentally study the performance of a porous burner (PB) and the results ... more This research is to experimentally study the performance of a porous burner (PB) and the results are compared with those obtained from the conventional burner (CB). The porous burner consists of two co-concentric cylindrical tubes as a shell and tube heat exchanger. The inside of a tube fills up with spherical ceramics with a diameter of 1.5 cm for forming the porous chamber, which is wrapped around by a larger cylindrical tube as a shell. The shell contains water and serves as a water container. The LPG is used as a fuel and a heat-load condition is set as the gas flow rate of LPG, which is varied in a range of 1 to 7 LPM. Air entrainment is controlled for the excess oxygen between 6-7% in the exhaust. Also, the porosity is a constant of 0.5 and the gas pressure keeps constant at 0.4 bar. Through analysis and discussion of this study, the interesting findings can be drawn as follows: 1) the combustion temperature of the PB is 30% higher than that of the CB on average, while the exhaust gas temperature of the PB is 19% lower than that of the CB on average. 2) Based on the efficiency evaluation, the latent energy, the rate of vaporization, and thermal efficiency obtained by the PB are higher than those obtained by the CB with a value of 46%, 56%, and 48.7% respectively. 3) The maximum energy saving of the PB is higher than that of the CB as much as 21%. 4) very low CO emissions are noticed for both types at high loads, while the NOx emission of the PB is 75% lower than that of the CB and the NOx emission of the PB is lower a 20-ppm limit for all load conditions.
วารสารวิชาการและวิจัย มทร.พระนคร, 12(1) : 92-101This research aimed to study powe generation from... more วารสารวิชาการและวิจัย มทร.พระนคร, 12(1) : 92-101This 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 addit...
FEAT Journal, 2020
This research is to experimentally study the performance of a porous burner (PB) and the results ... more This research is to experimentally study the performance of a porous burner (PB) and the results are compared with those obtained from the conventional burner (CB). The porous burner consists of two co-concentric cylindrical tubes as a shell and tube heat exchanger. The inside of a tube fills up with spherical ceramics with a diameter of 1.5 cm for forming the porous chamber, which is wrapped around by a larger cylindrical tube as a shell. The shell contains water and serves as a water container. The LPG is used as a fuel and a heat-load condition is set as the gas flow rate of LPG, which is varied in a range of 1 to 7 LPM. Air entrainment is controlled for the excess oxygen between 6-7% in the exhaust. Also, the porosity is a constant of 0.5 and the gas pressure keeps constant at 0.4 bar. Through analysis and discussion of this study, the interesting findings can be drawn as follows: 1) the combustion temperature of the PB is 30% higher than that of the CB on average, while the exhaust gas temperature of the PB is 19% lower than that of the CB on average. 2) Based on the efficiency evaluation, the latent energy, the rate of vaporization, and thermal efficiency obtained by the PB are higher than those obtained by the CB with a value of 46%, 56%, and 48.7% respectively. 3) The maximum energy saving of the PB is higher than that of the CB as much as 21%. 4) very low CO emissions are noticed for both types at high loads, while the NOx emission of the PB is 75% lower than that of the CB and the NOx emission of the PB is lower a 20-ppm limit for all load conditions.
วารสารวิชาการและวิจัย มทร.พระนคร, 12(1) : 92-101This research aimed to study powe generation from... more วารสารวิชาการและวิจัย มทร.พระนคร, 12(1) : 92-101This 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 addit...