Eclipse Inc. introduced the TJSR v5 self-recuperative burner for direct-fired furnace heating applications. The advanced burner design combines a high-velocity flame with fuel-saving recuperation. A space-saving integral eductor pulls the furnace exhaust through an internal ceramic recuperator. The recuperator preheats the incoming combustion air to very high levels, which improves furnace operating efficiency to reduce fuel usage by as much as 50% over typical ambient air burners. The TJSR v5 design eliminates the need for the hot air ductwork required by external recuperators, providing savings in hardware and installation. The internally insulated heat exchanger section and exhaust housing hold heat in the recuperative section, adding to the heat recovery efficiency. This also keeps external temperatures very low, providing better operator comfort and reduced thermal wear on associated equipment outside the furnace shell. The integrated gas and air orifices simplify burner piping, set-up, and adjustment. The TJSR V5 can be fired on natural gas, propane, or butane and is available in three sizes, with a maximum capacity ranging from 200,000 to 600,000 Btu/hr (60 to 175 kW). (