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Sigma Thermal - Radiant-Convective Heater
A radiant–convective style heater is the most well-known and commonly used style of direct-fired heater. These heaters utilize a bare tube radiant zone in combination with a bare / finned convection section. Vertical cylindrical, A-frame, and cabin style are the most common configurations. Sigma Thermal offers all types of radiant–convective heater designs including API 560 compliant systems.
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- Direct Fired Design Flexibility: Careful radiant zone design and row by row convection coil design allow for optimal furnace configuration. Sigma Thermal has extensive experience in process coil design for multi-phase fluids, viscous hydrocarbons, suspended solids, and various gaseous mixtures.
- Fuel Source and Burner Flexibility: Standard or engineered burner configurations are available for use with both traditional and alternative fuel sources. Both natural draft and forced draft units available. Low emissions burners can be supplied to meet all emission requirements (e.g., Low NOx, Best Available Control Technology).
- Efficiency: Base efficiencies can exceed 90% (LHV Basis) depending on process inlet temperature, and with an optional economizer can exceed 93% (LHV basis).
- Advanced Control Systems: Complete control systems are engineered to optimize system safety and performance. Sigma thermal can supply simple and cost effective standard panels, as well as full process automation and PLC based combustion control / BMS.