A combined experimental and computational study on the melting behavior of a medium temperature phase change storage material inside shell and tube heat exchanger

Hosseini, M.J.; Ranjbar, A.A.; Sedighi, Kurosh; Rahimi, M.

doi:10.1016/j.icheatmasstransfer.2012.07.028

Cited by 233 publications

(90 citation statements)

References 23 publications

(24 reference statements)

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“…The size as well as the quality of the discretization of the porous zone is important for the calculation result. A widely used single-domain method is the enthalpy-porosity method [38,42,[47][48][49][50][51][52]. This model includes latent heat effects as a source term and includes a technique to ensure that, the velocity field vanishes in the solid region [42].…”

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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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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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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“…The SIMPLE algorithm (Patankar, 1980) whose task is to couple pressure-velocity governing differential equations and QUICK differencing scheme is employed for solving the momentum and energy ones within a 3-D in-house developed code (Hosseini et al, 2012), whereas the PRESTO scheme is adopted for the pressure correction equation. The underrelaxation coefficient for momentum, pressure, density, melting fraction and thermal energy are 0.7, 0.3, 1, 0.9 and 1, respectively.…”

Section: Computational Methodologymentioning

confidence: 99%

“…Temperature and mass flow rate during both melting and solidification are studied for a shell and tube heat exchanger by Hosseini et al (2012Hosseini et al ( , 2014 in which energy absorption capability of the inserted PCM and thermal characteristic of the PCM storage system are investigated respectively. Experimental results indicated that by increasing inlet HTF temperature to 80 • C, theoretical efficiency in charging and discharging processes rises to 88.4 and 81.4 %, respectively.…”

Section: Introductionmentioning

confidence: 99%

Thermal analysis of PCM containing heat exchanger enhanced with normal annular fines

2015

Self Cite

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Abstract. In this study, the effect of fins' height and Stefan number on performance of a shell and tube heat exchanger which contains a phase change material is investigated numerically and experimentally. Melting time, solidification time, liquid mass fraction, melting and solidification front and temperature distribution in different directions (longitudinal, radial and angular) are among criteria for the heat exchangers' comparison. In order to generalize the comparison, melting and solidification fronts are studied for different sections of the shell, fin section and mid-section, for different fins' height during charging and discharging processes. The results show that, these two parameters play important roles in the heat exchanger performance. Increasing Stefan number, the melting time reduces; which exhibits a descending trend in rate when the fins are heightened. In addition, investigating both processes, it can be figured out that increasing fins' height influences the solidification time more significantly than melting.

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“…The maximum gained ice has a thickness that is approximately equal to half of the tube spacing between the tubes utilized, which is formed in approximately 45 min and released in 12.5 min. Hosseini et al [8] studied experimentally and numerically the role of buoyancy driven convection during constrained melting of commercial paraffin (RT50) inside a shell and tube heat exchanger. A series of experiments is conducted to investigate the effect of increasing the inlet temperature of the heat transfer fluid (HTF) on the charging process (melting) of the PCM.…”

Section: Introductionmentioning

confidence: 99%

Numerical & Experimental Investigation of Solidification Thickness around Cylindrical Surfaces for HVAC Cold Storage Systems

Abbas¹,

Tina²,

Badran³

2018

IJAERS

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A combined experimental and computational study on the melting behavior of a medium temperature phase change storage material inside shell and tube heat exchanger

Cited by 233 publications

References 23 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

Thermal analysis of PCM containing heat exchanger enhanced with normal annular fines

Numerical & Experimental Investigation of Solidification Thickness around Cylindrical Surfaces for HVAC Cold Storage Systems

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