150-Ton Hairpin Heat Exchanger Delivered for a 2×300MW Salt Cavern Compressed Air Energy Storage Project
Boyu Industry successfully completed the delivery of a large 150-ton hairpin heat exchanger for a 2×300MW salt cavern compressed air energy storage power station project, demonstrating strong manufacturing capability for large-scale heat exchange equipment used in advanced energy storage systems.

Project Overview
Boyu Industry recently delivered a 150-ton hairpin heat exchanger for a 2×300MW salt cavern compressed air energy storage project. The equipment is designed for a demanding energy storage application where reliable heat transfer, pressure-bearing performance and long-term operating stability are essential.
Salt cavern compressed air energy storage, also known as salt cavern CAES, is an important large-scale energy storage solution. During off-peak power periods, air is compressed and stored in underground salt caverns. When electricity demand increases, the stored compressed air is released to drive power generation equipment. Heat exchangers play a critical role in controlling air temperature, improving system efficiency and supporting stable operation.
The successful delivery of this large hairpin heat exchanger reflects Boyu Industry’s integrated capability in heavy equipment fabrication, welding, assembly, lifting, testing and delivery for large industrial projects.
What Is a CAES Heat Exchanger?
A CAES heat exchanger refers to heat exchange equipment used in a Compressed Air Energy Storage system. CAES is short for Compressed Air Energy Storage, a technology that stores energy by compressing air and releasing it later for power generation.
In a CAES system, heat exchangers may be used for air cooling, air heating, heat recovery, intercooling, aftercooling or thermal management. The exact design depends on the process conditions, including air pressure, temperature, flow rate, heat duty and system configuration.
Compared with general industrial heat exchangers, CAES heat exchangers often require stronger mechanical design, reliable weld quality, stable thermal performance and customized fabrication according to project-specific operating conditions.
Why Hairpin Heat Exchangers Are Used in CAES Projects
A hairpin heat exchanger is a heat exchanger with a U-shaped or hairpin-type structure. It is commonly used in applications involving high pressure, high temperature, small to medium flow rates, viscous fluids, large temperature differences or special process requirements.
For compressed air energy storage projects, hairpin heat exchangers can be selected when the process requires robust pressure-bearing performance, efficient heat transfer and a compact yet strong mechanical structure. Their configuration can also be customized to meet specific process layouts and installation requirements.
Typical Advantages
- Suitable for high-pressure and high-temperature service conditions
- Customizable design according to process requirements
- Strong mechanical structure for demanding industrial applications
- Applicable to air, gas, oil, chemical media and heat recovery systems
- Can be designed for energy storage, chemical, petrochemical and power projects
Manufacturing Capability for Large Hairpin Heat Exchangers
The delivery of a 150-ton hairpin heat exchanger requires more than ordinary fabrication capacity. It involves engineering coordination, material preparation, pressure part manufacturing, welding control, dimensional inspection, lifting arrangement and final shipment management.
Boyu Industry has long-term experience in manufacturing industrial heat exchangers, pressure vessels, boiler components and customized heat exchange equipment. For large hairpin heat exchangers, our manufacturing process can be arranged according to customer drawings, technical specifications, applicable standards and project requirements.
Technical Highlights
Large hairpin heat exchangers used in energy storage projects must meet strict requirements for heat transfer performance, structural strength and manufacturing quality. The following aspects are especially important during design and fabrication:
Pressure-Bearing Design
The equipment can be designed according to project pressure, temperature and applicable code requirements.
Welding Quality
Welding procedures, welders and inspection requirements can be controlled according to customer specifications.
Material Selection
Carbon steel, stainless steel, duplex stainless steel and other materials can be selected based on process media.
Heavy Fabrication
Large equipment manufacturing requires strong workshop capacity, lifting capability and shipment coordination.
Applications of Hairpin Heat Exchangers
Hairpin heat exchangers are not limited to compressed air energy storage projects. They are also widely used in industrial processes where compact structure, high pressure resistance and customized heat transfer design are required.
- Compressed air energy storage systems
- Salt cavern energy storage power stations
- Chemical and petrochemical plants
- Oil and gas processing systems
- Power plant auxiliary systems
- High-pressure gas cooling and heating systems
- Heat recovery systems
- Viscous fluid heating or cooling applications
Why Choose Boyu Industry
Boyu Industry is a professional manufacturer of heat exchange equipment and pressure equipment. We provide customized heat exchangers for energy, chemical, petrochemical, coking, boiler and industrial heat recovery applications.
For customers requiring large hairpin heat exchangers, CAES heat exchangers or other custom-designed pressure equipment, Boyu Industry can support the project from technical communication to fabrication and delivery.
- Custom heat exchanger fabrication according to drawings
- Large pressure vessel and heat exchange equipment manufacturing
- Material selection according to working media and operating conditions
- Welding, inspection, assembly and shipment support
- Experience in energy storage, power, chemical and industrial projects
FAQ
What is a hairpin heat exchanger?
A hairpin heat exchanger is a type of heat exchanger with a U-shaped or hairpin-style configuration. It is often used for high-pressure, high-temperature or special process applications.
What does CAES heat exchanger mean?
CAES heat exchanger means compressed air energy storage heat exchanger. It refers to heat exchange equipment used in compressed air energy storage systems for air cooling, heating or heat recovery.
Can Boyu Industry manufacture custom hairpin heat exchangers?
Yes. Boyu Industry can manufacture customized hairpin heat exchangers according to customer drawings, process data sheets and project specifications.
What information is required for quotation?
For quotation, customers are recommended to provide drawings, process conditions, design pressure, design temperature, working media, material requirements, heat duty and applicable standards.
