Radiant burner BR – HT

natural gasgasglass

General description
Glass Service supplies complete air‑gas burner systems for glass melting and distributor applications. The supply scope includes burners and all complementary accessories: air and gas valves, flexible joints/connections, orifice plates for flow balancing and measurement, and thermally insulated pipework where preheated primary air is required.

Overview
The BR series covers nominal outputs from 145 to 1600 kW. Two flame types are available: luminous flame (LF) for the melting area and clear flame (NF) for distributor zones. Burners can be mounted with inlet pipework from above or below. The burner block may be provided by GLASS SERVICE or manufactured by the customer to GLASS SERVICE drawings. A high‑temperature variant, BR – HT, is rated for service up to 800 °C.

Design features
BR burners feature a low‑momentum flame path to prevent local peak temperatures on the furnace crown and related rat‑holes. Flame radiation is concentrated in the visible spectrum (improving radiative heat transfer to the glass). Key characteristics include:

• Low momentum flame path
• High radiation in the visible spectrum (500–2000 nm)
• Continuous external regulation of flame length for precise path adjustment (dual impulse model available)
• Maintenance‑friendly, easily removable components
• Compatible with natural gas or LPG
• Multiple sizes to match application requirements

Dual impulse model (BR-DI)
The BR‑DI incorporates a special nozzle design allowing flame length adjustment without changing the burner nozzle. Adjustment is performed via a manual valve on the burner lance. Dual impulse is available for high luminous flame burners only.

Product tables (models and technical data)
BR series – Models and nominal power
Model | Size (inch) | Nominal power (kW)
BR 3 | 3 | 145
BR 4 | 4 | 220
BR 5 | 5 | 290
BR 6 | 6 | 365
BR 8 | 8 | 730
BR 12 | 12 | 1600

BR series – Air / gas and flame data
Parameter | BR 3–4 | BR 5–6–8 | BR 12
Max. air temperature (°C) | 400 | 600 | 600
Air pressure (mbar) | 30 | 35 | 35
Gas pressure (mbar) | 25 | 30 | 30
Flame length (m) | 0.3–0.7 (smaller sizes) | 0.7–3 (mid sizes) | 1.5–4.5 (largest)

BR series – Inlet piping and dimensions
Gas inlet piping (A) | BR 3 | BR 4 | BR 5 | BR 6 | BR 8 | BR 12
Inch | 1" | 1"1/4 | 1"1/2 | 1"1/2 | 2" | 2"

Air inlet piping (B) | BR 3 | BR 4 | BR 5 | BR 6 | BR 8 | BR 12
Inch | 3" | 4" | 5" | 6" | 8" | 12"

Dimensions (mm) – Example (C / D / E / F) by model group:
BR 3: C 168, D 540, E 250, F 384
BR 4: C 219, D 550, E 250, F 435
BR 5: C 244, D 570, E 260, F 455
BR 6: C 273, D 920, E 320, F 480
BR 8: C 324, D 1020, E 370, F 570
BR 12: C 457, D 1063, E 365, F 700

BR-DI (Dual Impulse) series – Models and nominal power
Model | Size (inch) | Nominal power (kW)
BR DI 5 | 5 | 290
BR DI 6 | 6 | 365
BR DI 8 | 8 | 730
BR DI 12 | 12 | 1600

BR-DI – Typical data
Max. air temperature (°C) | 600
Air pressure (mbar) | 30
Gas pressure (mbar) | 30
Flame length (m) | 0.7–3 (depending on model)
Gas inlet piping A (inch) and Air inlet piping B (inch) mirror BR-series sizing depending on model.

Additional notes
Flame shape (luminous or clear) is selected by nozzle type. Flame length can be adjusted by nozzle size or, for BR‑DI models, via the manual valve. Orifice plates are used for flow control and pressure‑loss balancing. A high‑temperature version (BR – HT) is available up to 800 °C.

Technical specifications

• Manufacturer / Brand: GLASS SERVICE
• Commercial model name: BR – HT (high‑temperature version)
• Available models: BR 3, BR 4, BR 5, BR 6, BR 8, BR 12 and BR‑DI 5/6/8/12
• Nominal power range: 145 kW to 1600 kW
• Flame types: Luminous flame (LF) for melting area; Clear flame (NF) for distributor zone
• Flame radiation: concentrated in visible spectrum (500–2000 nm)
• Flame length: typical ranges 0.3 m up to 4.5 m depending on model
• Fuel compatibility: Natural gas or LPG
• Air inlet temperature options: standard and versions up to 600 °C (some sizes) and special version up to 800 °C (BR – HT)
• Control option: Dual impulse technology for external continuous flame length regulation (BR‑DI)
• Maintainability: Components designed to be easily removed for maintenance