From Forced Draft to Natural Draft: SLG Rethinks Air-Cooling with SNDACC

At the 2026 Power Plant Air-Cooling Technology & Intelligent All-Steel Cooling System Seminar, SLG shared its latest progress in SNDACC — Super Natural Draft Air-Cooled Condensing technology — integrated with all-steel cooling towers.

The concept is designed to simplify conventional air-cooling systems by eliminating large fan groups, surface condensers and circulating-water systems, while using natural draft to directly support steam condensation.

Key advantages include:

• Near-zero power consumption at the cooling end
• Lower initial investment and operating costs
• Fewer rotating components and reduced maintenance
• Improved back-pressure stability under challenging operating conditions
• Modular construction and shorter project schedules
• Strong adaptability to high-wind, cold-climate and complex site conditions

When combined with SLG’s all-steel cooling tower technology, SNDACC offers a more integrated, efficient and intelligent cooling solution for large-scale power generation projects.

The technology has already been applied and validated across multiple large power projects, and is now expanding toward more demanding operating environments.

SLG will continue to advance air-cooling innovation, helping power and industrial customers improve efficiency, reduce energy consumption and build more flexible, lower-carbon systems.