High-Temperature Vacuum Heat-Collecting Tube
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Royal Tech CSP leverages cutting-edge coating technology and automated sealing processes to launch a new series of high-temperature vacuum heat-collecting tubes. These products deliver high performance and stable quality to the global trough CSP market, ensuring reliable power generation output throughout the full lifecycle of trough-type CSP power stations.

Classification of High-Temperature Vacuum Heat-Collecting Tubes
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  • International Standard Heat-Collecting Tubes (70mm)
  • International Standard Heat-Collecting Tubes (80mm)
  • International Standard Heat-Collecting Tubes (90mm)
  • Non-standard Customized Heat-Collecting Tubes




International Standard Solar Receiver Tube（70）






Total tube length

4060mm


Effective working length

>96.2%


Operating medium

Molten Salt / Heat Transfer Oil (HTF)


Solar absorptivity

α>96.2%


Steel tube OD

70mm


Maximum

operating temperature

400℃/550℃


Anti-reflective

coating transmittance

T>96.3





Installation & O&M (Operation and Maintenance)
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  • Innovative Glass-Metal Sealing Technology

Thanks to the independently innovated fully automatic glass-metal sealing technology and production process, Longteng (Royal Tech CSP) solar receiver tubes feature highly consistent reliability and adaptability to harsh environments, capable of meeting the heat collection demands of solar fields in various application scenarios.

  • Proprietary High-Temperature Vacuum Solar Receiver Tube Design

    Bellows boasts a design life of over 100,000 cyclic stretching times; innovative internal reflective shield design minimizes optical cosine loss; external protective cover delivers more reliable bellows protection.

  • High-Performance Selective Absorber Coating Technology

    The RTUVR® solar receiver tube exhibits superior optical efficiency exceeding industrial standard tubes in tests conducted by DLR QUARZ Laboratory. After 1000 hours of accelerated thermal aging test at 478℃, the overall performance degradation of the tube is nearly zero, providing performance guarantee for the stable operation of CSP power plants throughout their full life cycle.

  • High-Performance Anti-Reflective Coating Technology

The self-developed next-generation glass anti-reflective coating of the company has passed a series of durability tests at DLR, demonstrating excellent UV resistance, water resistance, wear resistance and sandstorm resistance. It ensures the solar receiver tube maintains high transmittance over the long term in harsh environments.

Installation & O&M (Operation and Maintenance)
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