Phase Change Material (PCM) Melting In Tube With Fins CFD Simulation, Numerical Paper Validation
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€190.00 Original price was: €190.00.€155.00Current price is: €155.00.
Phase Change Materials (PCMs) are very important for making Triplex Tube Heat Exchangers (TTHXs) operate more efficiently. TTHXs are used for energy recovery in many fields, including dairy, food, beverages, and medicines. In these systems, the PCM is put in the middle tube in a way that lets it soak up heat from a hot heat transfer fluid moving through the outer tube while the system is charging. At the same time, it gives heat to a cold HTF in the inner tube. Adding both internal and external fins greatly increases the heat transfer area. This speeds up the melting process of the PCM and cuts down on the time needed for complete melting. The current CFD study investigates the PCM melting in a tubes with fins and targets validating the results of the paper titled “ Enhance heat transfer for PCM melting in a triplex tube with internal–external fins [1]”.
- Reference [1]: Mat, Sohif, et al. “Enhance heat transfer for PCM melting in triplex tube with internal–external fins.” Energy conversion and management74 (2013): 223-236.
Figure 1: PCM configuration in triplex tube with internal-external fins [1]
Simulation Process
The geometry of TTHX model is designed by Design Modeler. Copper pipes are used to ensure heat transfer. Eight fins are welded to the inner tube and middle tubes (shown in Fig.1). Notably, the symmetrical configuration of the model allows for simulating just half of it, plus using Axisymmetric option. Adopting proper blocking, with 20608 Hexahedra cells, we could generate a structured grid (see Fig, 2). The solidification and melting module is used to simulate the melting process of the PCM. To put more emphasis, we need to bear in mind that this is a paper validation study. Thus, it`s vital to adopt the same material properties.
Figure 2: Structured grid in PCM melting in tube with fins
Post-processing
The graphs that show the change in temperature and the amount of liquid over time show that the modeling is accurate (Fig.3a). The liquid fraction plot clearly shows a strong connection between the current simulation and the reference data. The temperature plot also shows that the estimated temperatures are very close to the actual data, with only small differences. All in all, comparing the simulation results to paper data shows that the validation study of Phase Change Material (PCM) melting in a tube with fins is very accurate and reliable. The contour of the static temperature distribution shows a smooth development of the melting. The fins improve heat transfer by increasing the surface area. This makes the melting process more efficient and faster, which proves that the finned tube design works.
Figure 3: Graph shows PCM a) temperature b) liquid fraction over time
Figure 4: Temperature distribution of Phase Change Material (PCM) Melting In Tube With Fins CFD Simulation
We pride ourselves on presenting unique products at CFDLAND. We stand out for our scientific rigor and validity. Our products are not based on guesswork or theoretical assumptions like many others. Instead, most of our products are validated using experimental or numerical data from valued scientific journals. Even if direct validation isn’t possible, we build our models and assumptions on the latest research, typically using reference articles to approximate reality.
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