Investigation of Partially Premixed Combustion in Household LPG Cook Stove Burner with Modification

Abstract

In this paper, a novel design of LPG (Liquefied Petroleum Gas) cook stove has been proposed along with the study of its effect on thermal performance. LPG cook stove is a common household appliance for cooking and heating purposes because of its higher heat content and also produces lower emissions than the other traditional fuels. They have significant share in global energy consumption of the World. Therefore, a small improvement in existing cook stove burner would results in a large saving of the energy consumption and reduces the resource activity. In the present work, the thermal performance of a traditional LPG cook stove has been numerically studied and effort has also been done to change the design of burner for improving the thermal efficiency. The numerical study simulates the cook stove burner in a threedimensional flow field with species transport of gases. In the modified design of cook stove, an extra hole provided on the top surface of burner cap to improve to thermal efficiency, which also improves the residence time of hot combustible gases between the burner cap and bottom surface of vessel. The thermal efficiency of modified cook stove has been found to be 71%, which is 2.5% more efficient than conventional burner reported in literature