Views: 0 Author: Site Editor Publish Time: 2026-10-14 Origin: Site
In utility boilers, biomass energy plants, and industrial furnaces, feeding cold ambient winter air directly into combustion chambers or main rotary air heaters causes cold-end sulfuric acid condensation, ash plugging, and lower flame temperatures.
At CSTHEATEXCHANGER, we engineer Heavy-Duty Finned Tube Radiators for Air Preheaters (Steam Coil Air Preheaters - SCAPH). Utilizing auxiliary low-pressure steam, extraction steam, or boiler hot water, our finned radiators preheat forced-draft combustion air to 60°C–120°C, preventing cold-end acid dew point corrosion and increasing overall boiler thermal efficiency.
Cold-End Acid Corrosion Protection: Pre-warms inlet air before it contacts main flue gas recuperators, maintaining metal temperatures safely above the sulfuric acid dew point (Tdew≈120∘CTdew≈120∘C).
High-Pressure Steam & Water Durability: Seamless SA106B carbon steel, 20G boiler steel, or 316L stainless steel tubes handle operating pressures up to 2.5 MPa.
Extruded Bimetallic & Welded Steel Fins: 100% metallurgical bonding guarantees zero thermal contact degradation over decades of heavy industrial duty.
Low Air-Side Static Resistance: Calibrated fin pitch (4 to 8 FPI) minimizes forced-draft (FD) fan static pressure loss.
Parameter | CSTHEATEXCHANGER APH Radiator Specs |
|---|---|
Operating Media | Saturated Steam (0.4–1.6 MPa), Boiler Hot Water (80°C–130°C) |
Air Temperature Rise | Warms ambient air from -20°C up to +60°C ~ +120°C |
Tube Metallurgy | Seamless Carbon Steel (SA106B/20G), SS304, SS316L |
Fin Options | Extruded Bimetal Al, High-Frequency Welded Steel Fins (4–8 FPI) |
Design Pressure | 1.6 MPa – 2.5 MPa (Hydro-tested to 1.5x) |
Protect your boiler air preheaters and boost thermal efficiency. Contact CSTHEATEXCHANGER today for SCAPH engineering sizing.
Website: www.cstheatexchanger.com
Email: info@cstheatexchanger.com
Phone / WhatsApp: +86 0519 8878 2189 / +86 181 3659 3690
Manufacturer: Changzhou Vrcoolertech Refrigeration Co., Ltd., Changzhou, Jiangsu, China
