Plasma gasification (ArcAMAT project)

Developing and demonstrating a novel waste recycling process using arc plasma with steam as plasma-forming gas in combination with advanced 3D-structured plasma torch electrodes.

Magnetocaloric effect-based refrigeration technology (ERATO project)

Heat transfer dynamics from a magnetocaloric material to the surrounding fluid, based on the temperature dependence of the absorption coefficient of water in the Near-Infrared region.

Highlighted paper: T.A. Nguyen, N. Kakuta, K. Uchida, H. Nagano, Near-infrared imaging of heat transfer behavior between gadolinium and fluid during magnetization/demagnetization process of magnetocaloric effect, J. Appl. Phys. 135, 193904 (2024). https://doi.org/10.1063/5.0207290

Numerically analyzed wavy structures to enhance active magnetic refrigeration.

Highlighted paper: T.A. Nguyen, R. Takata, K. Uchida, H. Nagano, Enhancement of thermodynamic efficiency in active magnetic refrigeration using sinusoidal wavy structures, Int. J. Heat Mass Transf. 240 (2025) 126654. https://doi.org/10.1016/j.ijheatmasstransfer.2024.126654.

Simultaneous visualization and measurement of 3D temperature and flow fields

Concurrent assessment of 3D temperature and Particle Tracking Velocimetry within water is achieved through a transmission method involving back illumination. This method employs a telecentric system oriented in two orthogonal directions and utilizes two Near-Infrared cameras.

Highlighted paper: T.A. Nguyen, K. Kondo, N. Kakuta, Simultaneous near-infrared measurement of temperature and flow fields of a thermal plume arising in water, J. Vis. (2024). https://doi.org/10.1007/s12650-024-00997-9

Utilize inverse Abel transform to reconstruct the 3D information of temperature

Inverse Abel transform for reconstructing 3D non-axisymmetric temperature fields in water formed by mixed convection surrounding a small heating sphere. It is based on the temperature dependence of the absorption coefficient of water at a wavelength of 1150 nm in the near-infrared region.

Highlighted paper: T.A. Nguyen, K. Kondo, N. Kakuta, Near-infrared measurement of temperature fields formed by mixed convection from a small heating sphere in water, Int. J. Therm. Sci. 176 (2022). https://doi.org/10.1016/j.ijthermalsci.2022.107498.