Pulse fire technology was originally developed in Europe
in the 1970s. It is a method of firing burners to increase efficiency and uniformity. There are two basic methods of pulsing a burner, On-Off and High-Low. The On-Off method is
typically found in kilns that operate above 1400o F. Top fired tunnel kilns utilizing stick burners are a good example. The High-Low method is typically used in lower temperature zones
and periodic kilns/furnaces. It may be more appropriate for pulsing individual burners. Each method has its advantages and disadvantages. When utilized appropriately, pulse fire can
provide quantitative fuel savings as well as increased uniformity. However, pulse fire alone will not guarantee these results. Hi Temp System, Inc. created ThrustFire to be flexible enough to
handle any furnace/kiln. Just a few of the available options include cycle time, burner on max & min times, burner order, user defined zones, individual burner bias, individual burner control based on uniformity requirements,
individual flame timers for NFPA requirements. The video below shows Eclipse Thermjets pulsing high-Low. Notice that low fire is set such that the flame remains inside the nozzle.