Year 2024

• A New Approach of Solidification Analysis in Modular Latent Thermal Energy Storage Unit Based on Image Processing

  Publication

  • R. Andrzejczyk
  • M. Saqib
  • M. Rogowski

  - APPLIED THERMAL ENGINEERING - Year 2024

  The solidification process of RT18HC in a cylindrical shell and tube storage unit has been studied using a new methodology based on image processing. The main idea of the algorithm is to label the region of solidification and use statistical functions to calculate the dimensions of the solidification front over time. Said analysis includes two methods. The first method is to measure the solid fraction changes during solidification....

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Year 2023

• Heat transfer enhancement of modular thermal energy storage unit for reversible heat pump cooperation

  Publication

  • R. Andrzejczyk
  • T. Muszyński
  • M. Fabrykiewicz
  • M. Rogowski

  - INTERNATIONAL JOURNAL OF THERMAL SCIENCES - Year 2023

  The following article presents experimental comparison research on a hexagonal shelland-tube latent thermal energy storage (TES). Such shape of a shell was deliberately chosen instead of a cylindrical one due to its high modularity and with intent for future applications in automobiles (EV and PHEV) air conditioning systems (HVAC). Two geometries of helical coils, acting as tubes, were studied in this article. One was a simple...

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• Recent advances of selected passive heat transfer intensification methods for phase change material-based latent heat energy storage units: A review

  Publication

  • M. Rogowski
  • R. Andrzejczyk

  - INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER - Year 2023

  The following article overviews recent studies regarding heat transfer enhancement methods, explicitly focusing on fins and coils utilization, in phase change material-based latent heat thermal energy storage systems. It discusses the influence of various geometrical and material parameters on the melting and solidification processes, as well as the orientation of the heat transfer surface within the storage tank. Additionally,...

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• The In-House Method of Manufacturing a Low-Cost Heat Pipe with Specified Thermophysical Properties and Geometry

  Publication

  • M. Rogowski
  • M. Fabrykiewicz
  • P. Szymański
  • R. Andrzejczyk

  - Applied Sciences-Basel - Year 2023

  Various types of heat pipes are available to purchase off the shelf, from various manufacturers, but most of them have strictly defined geometry and technical parameters. However, when there is a need to use a heat pipe (HP) with an unusual size and shape or working conditions other than the standard ones, it becomes very costly to order them from manufacturers, especially in small quantities, and only a few producers are willing...

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