Approximate analytical model for solidification in a finite PCM storage with internal fins

Lamberg, Piia; Sirén, Kai

doi:10.1016/s0307-904x(03)00080-5

Cited by 78 publications

(45 citation statements)

References 10 publications

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“…In the last decades, a higher number of analytical [30][31][32][33][34][35][36][37] as well as numerical methods [38][39][40][41][42][43] were developed to describe the melting and freezing process of a material under the influence of gravity. The main problem concerning the numerical simulation of the melting and/or solidification process is the change with time of the position of the phase interface.…”

mentioning

confidence: 99%

“…As reported in Ref. [30], more than the half of all investigations done Influence of the Fin Design on the Melting and Solidification Process of NaNO 3 in a Thermal Energy Storage System 915 on latent heat thermal storage systems were numerically and the most used models are 2D [39,41,43]. The very slow laminar flow (buoyancy-driven flow) and the variation of the physical properties of the PCM during the phase change result in difficulties for the numerical simulation.…”

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confidence: 99%

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Influence of the Fin Design on the Melting and Solidification Process of NaNO3 in a Thermal Energy Storage System

Walter¹,

Beck²,

Hameter³

2015

JEPE

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Abstract:The melting and solidification process of sodium nitrate, which is used as energy storage material, is studied in a vertical arranged energy storage device with two different bimetal finned tube designs (with and without additional lateral fins) for enhancing the heat transfer. The finned tube design consists of a plain steel tube while the material for the longitudinal (axial) fins is aluminum. The investigation analyses the influence of the lateral fins on the charging and discharging process. Three-dimensional transient numerical simulations are performed using the ANSYS Fluent 14.5 software. The results show that, every obstruction given by lateral fins reduces the melting and solidification velocity in direction to the outer shell.

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confidence: 99%

mentioning

confidence: 99%

Influence of the Fin Design on the Melting and Solidification Process of NaNO3 in a Thermal Energy Storage System

Walter¹,

Beck²,

Hameter³

2015

JEPE

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“…1 isolated walls, Lamberg [12] presented an approximate analytical solution. According to [12] the solid-liquid interface position from the end wall could be evaluated by:…”

Section: Pcm Solidification Within a Finned Containermentioning

confidence: 99%

“…For this reason, first the problem of PCM solidification inside the M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 rectangular finned container with fixed temperature on the walls is solved, and then temperature distribution through the composite plane wall containing PCM container, with convective boundary conditions is simulated. To analyze the accuracy condition for analytical solutions (splitting a twodimensional problem into two one-dimensional problems) in a rectangular finned container, LBM results are compared with results of Lamberg and Sirén [12] at different container aspect ratios.…”

Section: Introductionmentioning

confidence: 99%

Lattice Boltzmann application on the PCM solidification within a rectangular finned container

Talati

Taghilou

2015

Applied Thermal Engineering

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“…The change with time of the position of the phase interface during the melting and/or solidification process is the main problem concerning the numerical simulation. As reported in [29], more than half of all investigations done on latent heat thermal storage systems were numerically and most of the used models are 2D (see e.g., [28,30]). The very slow laminar flow (natural convection) and the variation of the physical properties of the PCM during the phase change result in difficulties for the numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Transient Numerical Simulation of the Melting and Solidification Behavior of NaNO3 Using a Wire Matrix for Enhancing the Heat Transfer

2016

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Abstract:The paper presents the results of a transient numerical investigation of the melting and solidification process of sodium nitrate (NaNO 3 ), which is used as phase change material. For enhancing the heat transfer to the sodium nitrate an aluminum wire matrix is used. The numerical simulation of the melting and solidification process was done with the enthalpy-porosity approach. The numerical analysis of the melting process has shown that apart from the first period of the charging process, where heat conduction is the main heat transfer mechanism, natural convection is the dominant heat transfer mechanism. The numerical investigation of the solidification process has shown that the dominant heat transfer mechanism is heat conduction. Based on the numerical results, the discharging process has been slower than the charging process. The performance of the charged and discharged power has shown that the wire matrix is an alternative method to enhance the heat transfer into the phase change material.

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Approximate analytical model for solidification in a finite PCM storage with internal fins

Cited by 78 publications

References 10 publications

Influence of the Fin Design on the Melting and Solidification Process of NaNO3 in a Thermal Energy Storage System

Influence of the Fin Design on the Melting and Solidification Process of NaNO3 in a Thermal Energy Storage System

Lattice Boltzmann application on the PCM solidification within a rectangular finned container

Transient Numerical Simulation of the Melting and Solidification Behavior of NaNO3 Using a Wire Matrix for Enhancing the Heat Transfer

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