The Role of the Evaporation System in CSP

In a Concentrated Solar Power (CSP) plant, the evaporation system functions as the equivalent of a boiler in a coal-fired power station. High-temperature molten salt transfers heat through a heat exchanger, converting water into high-pressure, superheated steam. This steam then drives the turbine to generate clean electricity.
The reliability and efficiency of the CSP steam generation system directly determine the overall performance of the power plant.

BOOYO' s Core Equipment for CSP Evaporation Systems

BOOYO designs and manufactures complete solutions for CSP vaporization systems, including:

• Heat Exchangers and Evaporators

  • High-performance shell-and-tube design for efficient molten salt-to-water heat transfer.

  • Tube options include smooth tubes, spiral tubes, and finned tubes.

  • Materials such as SA-213, SA-210, 304/316L stainless steel ensure long-term operation under high temperature and corrosive molten salt conditions.

• Boiler Drum

  • Ensures steam-water separation and provides stable steam quality for turbines.

• Circulation Pump System

  • Hot Salt Circulation Pump: maintains molten salt circulation in the primary loop.

  • Temperature Control Pump: provides precise temperature regulation.

  • Evaporator Water Side Pump: ensures stable water/steam circulation for heat transfer.

• Auxiliary Equipment

  • Start-up Heater: guarantees safe start-up and shutdown.

  • Desuperheater: controls steam temperature to protect turbines.

  • Advanced automation and control integration with DCS systems.

Hairpin Heat Exchangers for CSP Applications

One of BOOYO' s flagship products is the Hairpin Heat Exchanger, which has proven to be highly efficient and reliable in CSP vaporization systems:

• High-Pressure Operation: The U-shaped tube design minimizes weld joints and reduces leakage risks.

• Compact and Efficient: Requires smaller footprint compared to conventional exchangers, suitable for both tower CSP plants and parabolic trough CSP plants.

• Modular Design: Single or multiple units can be combined to meet project requirements.

• Long-Term Durability: Built with advanced alloys and stainless steels for more than 20 years of continuous operation in high-temperature molten salt environments.

In many CSP power plants, BOOYO’s hairpin heat exchangers serve as the core molten salt-to-water vaporization equipment, working seamlessly with boiler drums and auxiliary systems to form a complete evaporation island.

Normal Auxiliary Systems

To support the evaporation system, BOOYO also provides standard auxiliary equipment, such as:

• High Pressure Feedwater Heaters

• Low Pressure Feedwater Heaters

• Deaerators

• Salt Drain Tanks and Salt Discharge Systems

• Custom-designed pressure vessels

These auxiliary systems help improve CSP plant efficiency and ensure reliable long-term performance.

Why Choose BOOYO for CSP Projects?

• ASME U & S Stamp Certification – Fully compliant with international CSP project requirements.

• Proven Manufacturing Expertise – Decades of experience in boilers, heat exchangers, and pressure vessels.

• Custom Engineering Solutions – Tailored designs for different CSP technologies (tower, trough) and thermal fluids (molten salt, thermal oil).

• Durability and High Performance – Products engineered for a 20+ year lifecycle in demanding CSP environments.

Global CSP Market Applications

BOOYO' s CSP evaporation systems and hairpin heat exchangers have been successfully applied in multiple large-scale projects across China, the Middle East, and North Africa. With the growing demand for renewable energy and thermal storage, BOOYO continues to provide efficient, reliable, and cost-effective solutions for solar thermal power plants worldwide.