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Experimental and simulation analysis for heat transfer and pressure drop for single-phase flow in frame-and-plate heat exchanger.

Number: 2397

Author(s) : FARRAJ A. R., HRNJAK P.

Summary

This paper presents experimental results of heat transfer drop of the single-phase flow inside the plate heat exchangers. A unique approach is used to measure the heat transfer coefficient by measuring the wall temperatures. The local wall temperature measurements are collected from a two-channel setup based on a commercial plate-and-frame heat exchanger with a newly developed plate heat flux meter substituting the inner plate. Water is used as a working fluid in a vertical countercurrent flow arrangement. The heat flux meter is made from two original plates with thermocouples soldered to their surface and sandwiched with a thermal infill material in between. The heat flux meter is used to calculate the heat transfer coefficient from the wall measurement and compare the reading with the overall heat transfer coefficient of the heat exchanger for validation. Furthermore, the heat flux meter successfully showed the distribution of the temperature, heat flux, and heat transfer coefficient for single-phase without any modification to the geometry or the distribution area. ANSYS Fluent's (2020 R1) commercial code is used for computational fluid dynamics simulation with the realizable k-ε turbulence model. The simulation domain reflects the domain of the tested frame and plate heat exchanger. The simulation and experiment showed that the maldistribution of flow rate in the channel and swirl motion around the contact points enhances the turbulence.

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Pages: 10 p.

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  • Original title: Experimental and simulation analysis for heat transfer and pressure drop for single-phase flow in frame-and-plate heat exchanger.
  • Record ID : 30030711
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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