Research and Development of a Dual-Fuel Radiant Burner for Diverse Applications: Utilizing of Liquefied Petroleum Gas and Bio-Ethanol

DOI: 10.14416/j.ind.tech.2024.08.005

Abstract

In this article, a dual-fuel radiant burner was developed and tested for home and restaurant cooking. It uses liquefied petroleum gas (LPG) and bioethanol with the aim of reducing reliance on fossil fuels, a primary source of greenhouse gas emissions. Bioethanol, as a renewable fuel, shows great promise in replacing LPG. It results in net zero carbon emissions because it can be domestically produced from agricultural waste and products. The burner head comprises lightweight, highly porous ceramic foam made of silicon carbide and incorporates a single conventional gas injector for supplying both fuels. The results showed that the burner provided relatively high stable combustion of both LPG and bioethanol with low calorific value. This is due to the advantage of internal heat circulation of combustion within a porous medium burner. The combustion temperature increases with the firing rate. Increasing primary air has a positive effect on LPG combustion, leading to reduced carbon monoxide (CO) emissions. However, it has the opposite effect on bioethanol combustion, resulting in increased CO emissions with higher primary air entrainments. Firing LPG yields higher combustion efficiency compared to bioethanol. Nevertheless, at a firing rate of 5.50 kW of bioethanol, the maximum temperature reached is similar to that of LPG at the same firing rate, representing the optimal condition for this developed burner using bioethanol as fuel.