Single Ended Recuperative Burner SER SER v 3

Single Ended Recuperative Burner (SER) SER v. 3 Sales Presentation

Product Features l Tube Fired Burner l Higher Efficiency than TFB – Burner and recuperator in one product l Internal Flue Gas Recirculation – Lower NOx Emissions SER v. 3 Sales Presentation

Product History l Mature product l SER v. 1, 2 vs. SER v. 3 – Single inner tube vs. velocity combustor and ceramic inner tube sections – v. 3 includes air and gas orifices, TJ nozzle and Flame-rod option SER v. 3 Sales Presentation

Design Features SER v. 3 Sales Presentation

Re-circulating Design Benefits l NOx cut at least in Half l CO generally low l Improved Temperature Uniformity l No diminished efficiency for additional Benefits SER v. 3 Sales Presentation

Product Options l 3 models – 450, 600, 750 – Models based on outer tube diameter l 2 Burner Lengths – 350 mm and 500 mm l Natural gas, Propane, Butane – Same nozzle for all fuels – Fuel orifice size changes l Metallic or Ceramic Outer Tube l Flame-safety options – UV, Flamerod, None SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

High Temperature Ranges l Metallic – 1000 o. C (1850 o. F) l Hybrid Alloys – 1150 o. C (2100 o. F) l Silicon Carbides – 1300 o. C (2400 o. F) SER v. 3 Sales Presentation

High Temperature Metallic Strengths l Cost (2/3 the cost of most Ceramics) l Workability for Fabrication l Durability in Handling l Repairable in Most Cases l Established and Available SER v. 3 Sales Presentation

High Temperature Metallic Weaknesses l Temperature Limited l Reactive to Some Corrosive Environments l Gradually Diminishing Strength SER v. 3 Sales Presentation

Ceramics Strengths l 20% Gain in Temperature Rating l Not Reactive to Most Corrosive Environments l Limited Diminished Strength over Time l Costs gradually Dropping Into Practical Ranges l New Manufacturing Techniques Boost Availability and Shape Design SER v. 3 Sales Presentation

Ceramic Weaknesses l Cost Premium l Fragility l Special Sealing Considerations l Generally Not Repairable l Lead Time SER v. 3 Sales Presentation

Metallic Tubes Process *Dissipation (Flux) Rate Temp. o. C (o. F) k. W/m 2 (BTU/hr/in 2) 850 (1560) 32 (77) 900 (1650) 31 (68) 950 (1750) 27 (60) 1000 (1830) 23 (50) 1050 (1920) 18 (40) *Dissipation rate is based on theoretical calculation considering no special environment. SER v. 3 Sales Presentation

Silicon Carbide Tubes Process *Dissipation (Flux) Rate Temp. o. C (o. F) k. W/m 2 (BTU/hr/in 2) 1000 (1832) 77 (170) 1050 (1922) 68 (150) 1100 (2012) 57 (125) 1150 (2102) 45 (100) 1200 (2192) 32 (70) *Dissipation rate is based on theoretical calculation considering no special environment. SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

Target Customers l OEM’s l Electric to gas conversions l Heat treat co. / captive heat-treat l Steel mills l Tin baths l Etc. SER v. 3 Sales Presentation

SER v. 3 Sales Presentation

SER burner sizing example Acme Steel Co. l Atmosphere Furnace with Vertical Tubes (free to radiate) l Chamber temp 925 o. C (1700 o. F), Natural Gas l Total heat required determined by heat balance 147 k. W (500, 000 BTU/hr) l Room for six 150 mm (6”) tubes l Hot Face to Hot Face Height 1650 mm (65”) l 300 mm (12”) Wall Thickness SER v. 3 Sales Presentation