Experimental evaluation of thermal performance of two different finned latent heat storage systems

Hassan, Ayad K.; Abdulateef, Jasim; Mahdi, Mustafa S.; Hasan, Ahmed F.

doi:10.1016/j.csite.2020.100675

Cited by 53 publications

(12 citation statements)

References 31 publications

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“…Studies of thermal energy storages with shell and tube exchangers have been carried out by Gasia and colleagues [16][17][18][19] considering several operational conditions (PCM tube, heat transfer fluid [HTF] type, fin geometry, and fin material). Gasia et al 16 conducted an experimental study to add fins to shell and tube thermal storage with four different designs, with commercial silicone and water as different HTF.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance investigation of finned latent heat storage of shell‐and‐tube, shell‐and‐nozzle, and shell‐and‐reducer models

Hasan

Hassoon

2023

Heat Trans

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Three models of latent heat storage with circular fins were studied numerically and experimentally in this paper. The models were shell‐and‐tube, shell‐and‐nozzle, and shell‐and‐reducer. These models were investigated for two different inlets of heat transfer fluid (HTF), from the bottom and top of the models, so the number of studied cases was six. The results of the comparison between the cases showed that the different HTF inlet with a fixed mass flow rate greatly affects the completion time of the melting process; the bottom inlet of HTF accelerates the melting compared to the top inlet because it enhances the role of natural convection. Compared with shell‐and‐tube with bottom HTF inlet, the shell‐and‐nozzle with bottom inlet reduces the melting time by 11.2%, while the shell‐and‐reducer with bottom inlet delays the melting by 24%. The results of the top HTF inlet cases showed that shell‐and‐nozzle delays the melting by 16% compared with shell‐and‐tube, while the melting is not completed in shell‐and‐reducer. Shell‐and‐nozzle with a bottom HTF inlet shows the shortest melting time and the best thermal performance among all the other cases due to the geometric design of the model. On comparing the numerical and experimental results, good agreement was found between them.

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Section: Introductionmentioning

confidence: 99%

Thermal performance investigation of finned latent heat storage of shell‐and‐tube, shell‐and‐nozzle, and shell‐and‐reducer models

Hasan

Hassoon

2023

Heat Trans

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“…In the context of the reliability and acceptability of a solar-powered energy system, Hassan et al (2020 ) experimentally conducted a comparative study on a solar-powered shell and tube heat exchanger to propose a novel model with a higher thermal energy density. Their study involved three main configurations: no-fin tubes and longitudinal- and circular-finned tubes.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the energy-storage performance of a PCM-based triplex-tube containment system equipped with arc-shaped fins

et al. 2022

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This study numerically intends to evaluate the effects of arc-shaped fins on the melting capability of a triplex-tube confinement system filled with phase-change materials (PCMs). In contrast to situations with no fins, where PCM exhibits relatively poor heat response, in this study, the thermal performance is modified using novel arc-shaped fins with various circular angles and orientations compared with traditional rectangular fins. Several inline and staggered layouts are also assessed to maximize the fin’s efficacy. The effect of the nearby natural convection is further investigated by adding a fin to the bottom of the heat-storage domain. Additionally, the Reynolds number and temperature of the heat-transfer fluid (HTF) are evaluated. The outcomes showed that the arc-shaped fins could greatly enhance the PCMs’ melting rate and the associated heat-storage properties. The melting rate is 17% and 93.1% greater for the case fitted with an inline distribution of the fins with a circular angle of 90° and an upward direction, respectively, than the cases with uniform rectangular fins and no fins, which corresponded to the shorter melting time of 14.5% and 50.4%. For the case with arc-shaped fins with a 90° circular angle, the melting rate increases by 9% using a staggered distribution. Compared to the staggered fin distribution, adding an extra fin to the bottom of the domain indicates adverse effects. The charging time reduces by 5.8% and 9.2% when the Reynolds number (Re) rises from 500 to 1000 and 1500, respectively, while the heat-storage rate increases by 6.3% and 10.3%. When the fluid inlet temperature is 55°C or 50°C, compared with 45°C, the overall charging time increases by 98% and 47%, respectively.

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“…It was proven that the triangle tube has best thermal performance in comparison with another shapes, according to the findings. Hassan et al, (2020) conducted an experimental study to test the influence of fin shape on improving the performance of PCM in the shell and tube heat exchanger of a LHSS. In addition to the finless heat exchanger, two heat exchangers with longitudinal and circular fins are manufactured and tested.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fin Shape on Thermal Performance Enhancement of PCM-Based Low-Grade Heat Harnessing Exchanger

Jaffal¹,

Jaleel²

2022

Frontiers in Heat and Mass Transfer

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The phase change material (PCM)-based low-grade heat harnessing exchanger is used to study the recovering wasted energy from grey water. This experimental study investigated the effect of fin shape on improving the thermal performance of a PCM-based low-grade heat harnessing exchanger. Three heat exchangers of equal dimensions, namely, finless, inclined finned and V-shaped finned heat exchangers, were manufactured and tested in a container containing the PCM. A finless heat exchanger was adopted as a base case to demonstrate the improvement of heat transfer by using fins. The finless heat exchanger consists of two serpentine tubes where the cold water and grey water flow in a counter flow arrangement. A series of experimental tests was conducted for the three exchangers with similar operational conditions for both PCM process (melting and solidification). Compared with the finless heat exchanger, the results show that the addition of the fins remarkably enhances the heat transfer between the heat exchanger and PCM in the two processes. The inclined fins are superior than the V-shaped fins in enhancing thermal performance. Compared with the finless heat exchanger, the heat transfer improvement in melting process is reached about 187.49% and 149.88% for heat exchanger with the inclined and V-shaped fins, respectively. The reduction in the solidification time is approximately 3 times higher than the reduction in the melting time for inclined fins and approximately 2.85 times for the V-shaped fins. Increasing the mass flow rates of grey water and cold water accelerates the melting and solidification of the PCM, and this acceleration is obvious in solidification.

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Experimental evaluation of thermal performance of two different finned latent heat storage systems

Cited by 53 publications

References 31 publications

Thermal performance investigation of finned latent heat storage of shell‐and‐tube, shell‐and‐nozzle, and shell‐and‐reducer models

Thermal performance investigation of finned latent heat storage of shell‐and‐tube, shell‐and‐nozzle, and shell‐and‐reducer models

Numerical analysis of the energy-storage performance of a PCM-based triplex-tube containment system equipped with arc-shaped fins

Effect of Fin Shape on Thermal Performance Enhancement of PCM-Based Low-Grade Heat Harnessing Exchanger

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