ECN Forum Forums Photo Discussion Forums Photos for General Discussion Experimental Oil Burner : Part One:

All images and information submitted by ECN Member Alan Belson:



















Through a nozzle, a gear pump delivers a measured quantity of high-pressure oil, as a cone of micro-droplets, into a blast tube past electric ignition arcs. An air blower delivers all the combustion air to the blast tube. The process is sequenced by a Danfoss LOA 24 type Burner Controller. For #2 oil, the air and fuel are usually delivered at ambient temperature - other fuels may need to be pre-heated and supplied with heated air. Note: As oil pressure increases, droplet size reduces. As oil viscosity increases, both droplet size and, counter-intuitively, the flow rate both increase. As temperature of oil increases the viscosity reduces, as does the flow . These changes are not linear, for instance doubling the pump pressure does not double the flow rate.

This burner has 2 tandem electric air-heaters mounted inside an insulated copper-sheet muffle, inserted between the blower and the blast tube and carried in a welded steel support frame. Thermal-break gaskets are fitted at both ends. This allows the fuel and air to be heated to preset temperatures for trials. Oil is heated as the oil line is in the hot air stream.