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

2. SER v.3 Sales Presentation Product Features Tube Fired Burner Higher Efficiency than TFB –Burner and recuperator in one product Internal Flue Gas Recirculation –Lower NO x Emissions

3. SER v.3 Sales Presentation Product History Mature product 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

4. SER v.3 Sales Presentation Design Features

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

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

7. SER v.3 Sales Presentation

8. High Temperature Ranges Metallic – 1000 o C (1850 o F) Hybrid Alloys – 1150 o C (2100 o F) Silicon Carbides – 1300 o C (2400 o F)

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

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

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

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

13. SER v.3 Sales Presentation Metallic Tubes Process Temp. o C ( o F) *Dissipation (Flux) Rate kW/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.

14. SER v.3 Sales Presentation Silicon Carbide Tubes Process Temp. o C ( o F) *Dissipation (Flux) Rate kW/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.

15. SER v.3 Sales Presentation

20. Target Customers OEM’s Electric to gas conversions Heat treat co. / captive heat-treat Steel mills Tin baths Etc.

21. SER v.3 Sales Presentation

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