chanelink logo
CHANELINK
Tiếng Việt

Pressure sensing using dual color laser absorption spectroscopy

483
2024-03-09 13:58:51
Xem bản dịch

The research team led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences recently designed a concentration independent pressure sensing technology for high-temperature combustion diagnosis. This method is based on dual color laser absorption spectroscopy.

The results of this study have been published in Optics Letters.
Aircraft engines are transitioning towards high-temperature and high-pressure combustion to improve thermodynamic efficiency. Pressure is a key parameter for monitoring engine performance and diagnosing engine faults. However, traditional contact pressure sensors can disrupt combustion flow and are limited by the temperature tolerance of the sensor material.

The researchers of this study designed a non-contact pressure sensing technology for high-temperature environments and tested it at temperatures up to 1300 K. This study mainly addresses the challenge of considering the influence of molecular concentration on gas pressure measurement in such an environment.

Researchers have found that by connecting double absorption lines to widen the collision line width, concentration variables can be alleviated. This breakthrough enables researchers to achieve concentration independent pressure measurements.

To verify this discovery, considering that the main product of hydrocarbon fuel combustion systems is H2O, the team used double absorption lines of H2O near 1343 nm and 1392 nm in a precisely designed heating absorption cell. They each achieved 50 μ S and 3% time resolution and pressure measurement uncertainty.

Source: Laser Net

Đề xuất liên quan

  • STMicroelectronics and Metalenz collaborate to promote the popularization of metasurface optical devices

    STMicroelectronics (ST), a developer of semiconductor technologies and Metalenz, which creates metasurface optics, have announced a new license agreement.The companies intend to broaden ST’s capability to use Metalenz IP to produce advanced metasurface optics based on ST’s manufacturing platform combining 300mm semiconductor and optics production, test and qualification. (Any) fiancial details of ...

    07-18
    Xem bản dịch

  • Lumiotive and Hokuyo announce the launch of the world's first 3D LiDAR sensor with true solid-state beam steering

    Lumotive, a pioneer in optical semiconductor technology, and Hokuyo Automatic Co., a global leader in sensors and automation, Ltd. announced today the commercial version of the YLM-10LX 3D LiDAR sensor. This breakthrough product features Lumiotive's light controlled metasurface (LCM) ™） Optical beamforming technology represents a significant leap in the application of solid-state programmable opti...

    2024-05-25
    Xem bản dịch

  • The Mysteries of Atmospheric Chemistry: Transient Absorption Spectroscopy Study Using FERGIE

    backgroundDr. Daniel Stone's research team from the University of Leeds in the UK is primarily focused on the study of oxidation reactions in the atmosphere and combustion processes. Dr. Stone is particularly interested in the chemical reaction processes of active substances that can control atmospheric composition and fuel combustion processes, such as hydroxide (OH), peroxide (HO2), and Crigee i...

    2024-03-06
    Xem bản dịch

  • South Korean DE&T will open new subsidiaries in the United States and Canada

    Recently, DE&T, a South Korean manufacturer of secondary batteries and display laser equipment, announced that the company will further expand its overseas business by opening new subsidiaries in the United States and Canada. According to its claim, this move is to carry out maintenance services for laser equipment locally. As of now, DE&T's overseas subsidiaries have increased from two to...

    04-08
    Xem bản dịch

  • BWT's 3000W product speed surges by 200%

    In the era of speed and precision, the field of thin and medium plate processing is experiencing a revolutionary transformation. Today, let's explore a remarkably fast tool -- BWT’s Lightning 3000W@34μm fiber laser, and witness its impressive performance.On busy production lines, this product is completing complex cutting tasks at astonishing speeds. Its high-speed, high-efficiency, and high-quali...

    05-12
    Xem bản dịch