Date

2022-8-31

Author

Filiz, Berkay

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

296
views

267
downloads

Cite This

In this thesis, the air conditioning system for an industrial application was designed. The effect of different supply and return register configurations on the cooling of the multi-purpose box and the air inside was examined. There are some difficulties in transporting products that are sensitive to temperature change and temperature distribution. The main source of these diffuculties is environmental conditions. Especially in regions with hot climatic conditions, products must be cooled while being transported. Within the scope of this study, there is an AC unit designed to operate at maximum performance according to the specified volume and weight limitations, for cooling a multi-purpose box and the air inside. The multi-purpose box is located in a chamber. The circulation of the air between the channels and the chamber is provided by supply and return registers. The position and cross sectional area of these supply and return registers affect cooling time and temperature distribution. In order to plan analyses and evaluate these effects, Design of Experiment (DOE) methods were used. All possible configurations were modelled in Computational Fluid Dynamics (CFD) environment by applying Full Factorial Design Method. Star CCM+ was used for all CFD analyses. Firstly, CFD analyses of 54 different configurations were completed, and results were evaluated with statistical approach in Minitab Software. Then, one of the best configurations was validated by experimental studies. The effect of the supply register position and area has also been investigated by experimental studies. After that a baffle was placed in the first supply register for the selected configuration to make more homogeneous temperature distribution on the multi-purpose box. To examine the effects of different angles and lengths of the baffle, 9 different configurations were analysed. Validation studies have also been completed for a selected baffle configuration. Finally, regression equations for each response were created according to the CFD results in Minitab software. According to these equations, two responses were optimized. Then, the angle and length of the baffle were found. CFD analysis was repeated according to the specified configuration, and results were evaluated.

Subject Keywords

Computational Fluid Dynamics, Conjugate Heat Transfer, Optimization, Design of Experiment, Numerical Simulation

URI

https://hdl.handle.net/11511/99571

Collections

Graduate School of Natural and Applied Sciences, Thesis