Description of a new compact premixed gas burner

Some general characteristics of a compact and efficient gas burner are described (1-5 kW). The heat source is a premixed flat flame stabilized on a 100 cm2 grid fed by a stoichiometric mixture of air and natural stainless steel gas. A circulating water heat exchanger made of brass can be approached to the flame as close as 7 mm above the burner surface. The temperature of the inlet gas mixture, the flow rate, and the position of the heat exchanger have been varied. The best working conditions are given as well as the temperature through the fresh gaseous mixture, the temperature profiles of the flame and the temperature of the fumes. From heat transfer calculations a simple model is presented.