Single Ended Recuperative Burner (SER)

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Single Ended Recuperative Burner(SER)
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Product Features

• Tube Fired Burner
• Higher Efficiency than TFB
• Burner and recuperator in one product
• Internal Flue Gas Recirculation
• Lower NOx Emissions

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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

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Design Features
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Re-circulating Design Benefits

• NOx cut at least in Half
• CO generally low
• Improved Temperature Uniformity
• No diminished efficiency for additional Benefits

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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

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High Temperature Ranges

• Metallic 1000oC (1850oF)
• Hybrid Alloys 1150oC (2100oF)
• Silicon Carbides 1300oC (2400oF)

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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

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High Temperature MetallicWeaknesses

• Temperature Limited
• Reactive to Some Corrosive Environments
• Gradually Diminishing Strength

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CeramicsStrengths

• 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

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CeramicWeaknesses

• Cost Premium
• Fragility
• Special Sealing Considerations
• Generally Not Repairable
• Lead Time

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Metallic Tubes
Process Temp. oC (oF) Dissipation (Flux) Rate kW/m2 (BTU/hr/in2)
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. Dissipation rate is based on theoretical calculation considering no special environment.
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Silicon Carbide Tubes
Process Temp. oC (oF) Dissipation (Flux) Rate kW/m2 (BTU/hr/in2)
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. Dissipation rate is based on theoretical calculation considering no special environment.
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Target Customers

• OEMs
• Electric to gas conversions
• Heat treat co. / captive heat-treat
• Steel mills
• Tin baths
• Etc.

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SER burner sizing exampleAcme Steel Co.

• Atmosphere Furnace with Vertical Tubes (free to
  radiate)
• Chamber temp 925oC (1700oF), 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