Indirect Steam Generators

Indirect Steam Generators

ENEVA indirect steam generators are systems that produce steam without direct combustion by utilizing an existing heat transfer fluid within the facility, such as thermal oil, high-pressure steam, or a similar medium. They provide a safe, efficient, and flexible alternative, especially for facilities with low-capacity or intermittent steam demand.

  • Steam generation without direct combustion
  • Thermal oil or steam-to-steam applications
  • Low capacity with high turndown ratio
  • Ideal solution for hygienic steam requirements
  • Engineering compliant with EN 12953 / PED

WHY INDIRECT STEAM SYSTEMS?

  • No need for natural gas lines, burners, or chimneys
  • High-efficiency steam production without flue gas losses
  • Adaptability to low and fluctuating steam demands
  • Flexible operation with high turndown capability
  • Clean and controlled steam production (suitable for hygienic applications)

These systems provide ideal solutions for auxiliary steam generation or process support applications.

In ENEVA indirect steam generators, the primary fluid (thermal oil or high-pressure steam) flows داخل a coil bundle. The secondary fluid, feedwater, is evaporated outside the coils to produce steam with the desired properties.

  • Indirect heat transfer, no direct combustion
  • Primary and secondary fluids do not mix
  • Sufficient water volume to balance sudden steam load changes
  • Dry steam generation with a large evaporation surface
  • Easy maintenance with flanged and removable coil bundle
  • Design optimized for pressure drop and thermal expansion calculations

Each system is designed using a project-based engineering approach, taking into account the facility’s existing energy infrastructure.

  • Food and beverage plants
  • Textile and process industries
  • Chemical and petrochemical plants
  • Hospitals and hygienic steam applications
  • Energy and utility facilities

Indirect Steam Generators – Technical Catalog (PDF)

Let’s Discuss the Right Solution for Indirect Steam Generation

If your facility has low or intermittent steam demand, we can design a safe and efficient system using ENEVA’s indirect steam generator solutions.

Let’s Evaluate Your Project
  • Thermal capacity: Up to approximately 10 MW
  • Operating pressure: Up to 30 barg
  • Steam type: Saturated or superheated steam
  • Heat source: Thermal oil, high-pressure steam, or hot water
  • Feedwater preheater integration (optional)
  • Carbon steel or fully stainless steel construction
  • Clean Steam Generator option for hygienic applications

CONTROL & SAFETY SYSTEMS

  • Proportional primary fluid control valves (2-way / 3-way)
  • Automatic surface and bottom blowdown systems
  • PLC-based control and monitoring
  • Safety equipment compliant with EN 12953 standards

REFERENCE APPLICATION (EXAMPLE)

Indirect steam generator with 2 t/h @ 5 barg design capacity
Heat source: Thermal oil / high-pressure steam
Application: Facility with low and intermittent steam demand