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Wyniki wyszukiwania dla: multitube

Wyniki wyszukiwania dla: multitube

  • Thermal Energy Storage with PCMs in Shell-and-Tube Units: A Review

    Publikacja

    The paper presents a survey of the experimental and numerical studies of shell-and-tube systems in which phase change material (PCM) is used. Due to the multitude of design solutions for shell-and-tube systems, the emphasis is placed on double-tube (DT), triplex-tube (TT), and multitube (MT) units. Additionally, only single-pass systems are considered. Particular attention is paid to the method of heat transfer intensification....

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  • Experimental investigation of thermal energy storage in shell-and-multi-tube unit with nano-enhanced phase change material

    Publikacja

    - APPLIED THERMAL ENGINEERING - Rok 2024

    This paper deals with thermal energy storage with use of nanoparticle enhanced phase change material in shell-and-multitube unit. The experiments are conducted under atmospheric pressure. Paraffin wax and two different fatty acids are used as base phase change material. Graphite and multi-walled carbon nanotubes serve as nanoparticles. Graphite nanoparticles are tested at the concentrations of 0.1%, 1% and 5% by weight, while multi-walled...

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  • Effect of Tube Bundle Arrangement on the Performance of PCM Heat Storage Units

    Publikacja

    - ENERGIES - Rok 2022

    The results of comprehensive study on charging and discharging of latent heat storage systems (LHSS) are presented. The multi tube shell-and-tube unit with a variable layouts of the tube bundles are examined. Two tube arrangements – in-line and staggered are tested. A variable number of tubes and different tube positions in a bundle are investigated. Moreover, two pitch ratios are studied. Three commercially available substances...

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