Thermal Efficiency of Domestic Cooking-Gas Burner Using Open-Cellular Porous Media in the Case of Varied Outlet Diameter of Mixing Tube

Abstract:

The domestic cooking-gas burner consumed the highest amount of Liquefied Petroleum Gas (LPG) not over 5.78 kW ( 280 mmH₂O) based on Thailand Industrial Standard (TIS 2312-2549) is modified by using the open-cellular porous media. The Nickel-Chrome (Ni-Cr) with pores per inch (PPI) of 8.5 and porosity (ε) of 0.92 is selected as porous media. To investigate the performance of a new cooking-gas porous burner, three outlet diameters of mixing tube (D_out) between primary air and LPG, i.e., 27, 35 and 43 mm., are examined. The temperatures at bottom vessel (T_V) and water (T_W) are monitored. The exhaust gas (CO and NO_X) is also observed. Thermal efficiency (η) of three modified burners are estimated in accordance with TIS 2312-2549. From the experiment, the T_V is increased with D_out leading to the boiling time (t) of T_W for reaching to about 99°C (depend on TIS 2312-2549) in the case of D_out = 43 mm gives the fastest. The CO and NO_X of all burners are not difference and are in relative low level: CO is in the range of 140 to 180 ppm and NO_X is not over 70 ppm. The η_th is raised with increasing D_out in which yield as 47.53, 52.86 and 54.77% for D_out of 27, 35 and 43 mm., respectively.

• Periodical: Key Engineering Materials (Volume 801)
• Pages: 357-362
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.801.357
• Online since: May 2019
• Authors: Bundit Krittacom*, Suradech Sinjapo
• Keywords: Cooking-Gas Burner, Liquefied Petroleum Gas, Mixing Tube, Open-Cellular

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