CFD Modelling of Hydrodynamic Phenomena and Heat Transfer in Channels of Plate Heat Exchangers

The processed wood industry urgently needs a dryer to improve the quality of its production. One of the important components in a dryer is a heat exchanger. To support a durable heat transfer process, a superior material is needed. The aim of the study was to analyze the effectiveness of the application of cross-flow flat plate heat exchangers to be used in wood dryers and compare the materials used and simulate heat transfer on cross-flow flat plate heat exchangers using Computational Fluid Dynamic simulations. The results showed that there was a variation in the temperature out of dry air and gas on the flat plate heat exchanger and copper material had a better heat delivery by reaching the temperature out of dry air and gas on the flat plate type heat exchanger of successive cross flow and. overall heat transfer coefficient value and the effectiveness value of the heat exchanger of the heat transfer characteristics that occur with the cross-flow flat plate type heat exchanger in copper material of 251.74725 W/K and 0.25.

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Heat transfer enhancement in fin-plate heat exchangers by wing type vortex generators

Chemical Engineering & Technology ◽

10.1002/ceat.270120140 ◽

1989 ◽

Vol 12 (1) ◽

pp. 288-294 ◽

Cited By ~ 12

Author(s):

Udo Brockmeier ◽

Martin Fiebig ◽

Thomas Güntermann ◽

Nimai K. Mitra

Keyword(s):

Heat Transfer ◽

Heat Transfer Enhancement ◽

Heat Exchangers ◽

Vortex Generators ◽

Transfer Enhancement ◽

Plate Heat

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CFD Aided Design of Heat Transfer Plates for Gasketed Plate Heat Exchangers

Volume 3: Engineering Systems; Heat Transfer and Thermal Engineering; Materials and Tribology; Mechatronics; Robotics ◽

10.1115/esda2014-20063 ◽

2014 ◽

Author(s):

Ece Özkaya ◽

Selin Aradag ◽

Sadik Kakac

Keyword(s):

Heat Transfer ◽

Pressure Drop ◽

Heat Exchangers ◽

Three Dimensional ◽

Separate Flow ◽

Working Fluid ◽

Number Range ◽

Plate Heat ◽

Pressure Distributions ◽

Cfd Analyses

In this study, three-dimensional computational fluid dynamics (CFD) analyses are performed to assess the thermal-hydraulic characteristics of a commercial Gasketed Plate Heat Exchangers (GPHEx) with 30 degrees of chevron angle (Plate1). The results of CFD analyses are compared with a computer program (ETU HEX) previously developed based on experimental results. Heat transfer plate is scanned using photogrammetric scan method to model GPHEx. CFD model is created as two separate flow zones, one for each of hot and cold domains with a virtual plate. Mass flow inlet and pressure outlet boundary conditions are applied. The working fluid is water. Temperature and pressure distributions are obtained for a Reynolds number range of 700–3400 and total temperature difference and pressure drop values are compared with ETU HEX. A new plate (Plate2) with corrugation pattern using smaller amplitude is designed and analyzed. The thermal properties are in good agreement with experimental data for the commercial plate. For the new plate, the decrease of the amplitude leads to a smaller enlargement factor which causes a low heat transfer rate while the pressure drop remains almost constant.

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Two-Phase Heat Transfer and Pressure Drop within Plate Heat Exchangers

Encyclopedia of Two-Phase Heat Transfer and Flow II ◽

10.1142/9789814623285_0011 ◽

2015 ◽

pp. 145-215 ◽

Cited By ~ 3

Author(s):

Farzad Vakili-Farahani ◽

Raffaele L. Amalfi ◽

John R. Thome

Keyword(s):

Heat Transfer ◽

Pressure Drop ◽

Heat Exchangers ◽

Two Phase ◽

Plate Heat ◽

Two Phase Heat Transfer

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A comprehensive survey on utilization of hybrid nanofluid in plate heat exchanger with various number of plates

International Journal of Numerical Methods for Heat &amp Fluid Flow ◽

10.1108/hff-11-2020-0743 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Faraz Afshari ◽

Azim Doğuş Tuncer ◽

Adnan Sözen ◽

Halil Ibrahim Variyenli ◽

Ataollah Khanlari ◽

...

Keyword(s):

Heat Transfer ◽

Heat Exchanger ◽

Heat Exchangers ◽

Flow Behavior ◽

Plate Heat Exchanger ◽

Single Type ◽

Hybrid Nanofluid ◽

Content Type ◽

Plate Heat ◽

The Impact

Purpose Using suspended nanoparticles in the base fluid is known as one of the most efficient ways for heat transfer augmentation and improving the thermal efficiency of various heat exchangers. Different types of nanofluids are available and used in different applications. The main purpose of this study is to investigate the effects of using hybrid nanofluid and number of plates on the performance of plate heat exchanger. In this study, TiO2/water single nanofluid and TiO2-Al2O3/water hybrid nanofluid with 1% particle weight ratio have been used to prepare hybrid nanofluid to use in plate type heat exchangers with three various number of plates including 8, 12 and 16. Design/methodology/approach The experiments have been conducted with the aim of examining the impact of plates number and used nanofluids on heat transfer enhancement. The performance tests have been done at 40°C, 45°C, 50°C and 55°C set outlet temperatures and in five various Reynolds numbers between 1,600 and 3,800. Also, numerical simulation has been applied to verify the heat and flow behavior inside the heat exchangers. Findings The results indicated that using both nanofluids raised the thermal performance of all tested exchangers which have a various number of plates. While the major outcomes of this study showed that TiO2-Al2O3/water hybrid nanofluid has priority when compared to TiO2/water single type nanofluid. Utilization of TiO2-Al2O3/water nanofluid led to obtaining an average improvement of 7.5%, 9.6% and 12.3% in heat transfer of heat exchangers with 8, 12 and 16 plates, respectively. Originality/value In the present work, experimental and numerical analyzes have been conducted to investigate the influence of using TiO2-Al2O3/water hybrid nanofluid in various plate heat exchangers. The attained findings showed successful utilization of TiO2-Al2O3/water nanofluid. Based on the obtained results increasing the number of plates in the heat exchanger caused to obtain more increment by using both types of nanofluids.

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