Experimental Investigation of a Spiral Tube Embedded Latent Thermal Energy Storage Tank Using Paraffin as PCM

Zhang, Siming; Zhang, Liyu; Yang, Xiaohu; Yu, Xiaokun; Duan, Fei; Jin, Liwen; Meng, Xiangzhao

doi:10.1016/j.egypro.2017.03.974

Cited by 18 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhang et al experimentally investigated the spiral tube–embedded LTES tank with a composite of paraffin as PCM. Paraffin RT54 as a base material with mass fraction of 3% carbon fibre is added to form a composite PCM.…”

Section: Latent Heat Storagementioning

confidence: 99%

“…Because of lower heat transfer between an HTF and PCM during discharge, the time required to discharge is longer than the time necessary for charging. Zhang et al 65 experimentally investigated the spiral tube-embedded LTES tank with a composite of paraffin as PCM. Paraffin RT54 as a base material with mass fraction of 3% carbon fibre is added to form a composite PCM.…”

Section: Investigations On the Performance Of Ltes Systemsmentioning

confidence: 99%

“…Zhang et al 65 • Higher energy storage capacity than the sensible thermal storage system, • Isothermal behaviour during the process of charge and discharge, • Compact size and economical in operation, and • Improved heat transfer rate.…”

Section: Combined Tes Systemsmentioning

confidence: 99%

See 2 more Smart Citations

Review on solar thermal energy storage technologies and their geometrical configurations

Suresh

Saini

2020

Int J Energy Res

View full text Add to dashboard Cite

Summary Because of the unstable and intermittent nature of solar energy availability, a thermal energy storage system is required to integrate with the collectors to store thermal energy and retrieve it whenever it is required. Thermal energy storage not only eliminates the discrepancy between energy supply and demand but also increases the performance and reliability of energy systems and plays a crucial role in energy conservation. Under this paper, different thermal energy storage methods, heat transfer enhancement techniques, storage materials, heat transfer fluids, and geometrical configurations are discussed. A comparative assessment of various thermal energy storage methods is also presented. Sensible heat storage involves storing thermal energy within the storage medium by increasing temperature without undergoing any phase transformation, whereas latent heat storage involves storing thermal energy within the material during the transition phase. Combined thermal energy storage is the novel approach to store thermal energy by combining both sensible and latent storage. Based on the literature review, it was found that most of the researchers carried out their work on sensible and latent storage systems with the different storage media and heat transfer fluids. Limited work on a combined sensible‐latent heat thermal energy storage system with different storage materials and heat transfer fluids was carried out so far. Further, combined sensible and latent heat storage systems are reported to have a promising approach, as it reduces the cost and increases the energy storage with a stabilized outflow of temperature from the system. The studies discussed and presented in this paper may be helpful to carry out further research in this area.

show abstract

Section: Latent Heat Storagementioning

confidence: 99%

Section: Investigations On the Performance Of Ltes Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Review on solar thermal energy storage technologies and their geometrical configurations

Suresh

Saini

2020

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…They proved paraffin is the best material because it can withstand very high temperatures and high latent heat. Zhang et al [2017], investigated the latent thermal storage behaviour with paraffin as an phase change material and performed five kinds of simulations for the charging and discharging process as well as measured the mass flow rate of the room and experimentally proved that paraffin is the best material to store latent heat of the system. Suraparaju et al [2021], investigated the detailed study analysis on PCM bed to evaluate the thermal storage performance and behaviour, solar based basin enhanced with straggled fins using different approaches.…”

Section: Introductionmentioning

confidence: 99%

Effect of Charging and Discharging Process of PCM with Paraffin and Al<sub>2</sub>O<sub>3</sub> Additive Subjected to Three Point Temperature Locations

K¹,

Muniamuthu²,

Mohan³

et al. 2022

J. Ecol. Eng.

View full text Add to dashboard Cite

This analysis focused on investigating thermal storage behaviour on phase change material along with Al 2 O 3 as an additive. The experimental investigation was performed by three set temperature points, i.e. 40 °C, 50 °C and 60 °C with the mass circulation rate through the tank of 5 kg/min, 3 kg/min and 2 kg/min. The forced circulation method was used to circulate the liquid, water was used as a working medium and Al 2 O 3 as nano particle. Paraffin acts a phase change material to conduct the experimental procedure. The combination of paraffin with Al 2 O 3 improves the latent heat storage of the material. The performance, with respect to charging and discharging of the material, was investigated and it was observed that the temperature location point of 50 °C shows the best results in terms of charging and discharging phenomena, compared to other two temperature location points. During the process of charging, the maximum rate of heat transfer can be achieved by Al 2 O 3 nanofluids. Paraffin along with Al 2 O 3 are characterized by the best thermal storage behaviour during the latent heat storage at charging process and dissipation of heat during discharge process. The rapid cooling comparison for three set location points has been studied and best solidification was achieved at the point of 60 °C; this is due to the rapid cooling at higher elevation temperatures. The energy that was stored in thermal form is to be transferred with the aid of heat exchanger, a special type heat exchanger employed in this analysis to transfer the heat. From this analysis it is concluded that paraffin with Al 2 O 3 are characterized by the best performance in terms of the charging and discharging phenomenon.

show abstract

“…Besides direct-contact systems, indirect-contact latent heat storage systems have also been described in the literature. [16][17][18] In these systems, the PCM and the HTF are physically separated by a wall. For instance, a piping system for the HTF separates it from the PCM.…”

Section: Introductionmentioning

confidence: 99%

Channel formation and visualization of melting and crystallization behaviors in direct‐contact latent heat storage systems

et al. 2020

View full text Add to dashboard Cite

Summary Thermal storage systems are an essential component for increasing the share of renewable energies in residential heating and for the valorization of waste heat. A key challenge for the widespread application of thermal storage systems is their limited power‐to‐capacity ratio. One potential solution for this challenge is represented by direct‐contact latent heat storage systems, in which a phase change material (PCM) is in direct contact with an immiscible heat transfer fluid (HTF). To demonstrate the applicability of the direct‐contact concept for domestic hot water production, a PCM with a phase change temperature of 59°C is chosen. To enable cost‐efficient implementation of the storage system, a eutectic mixture of two salt hydrates, magnesium chloride hexahydrate and magnesium nitrate hexahydrate, is chosen as the PCM. One key aspect for the direct‐contact concept is that, during discharge, the HTF channels in the PCM do not become clogged during the solidification of the PCM. In this study, the formation and topology of the channels in direct‐contact systems under an optimized flow condition are investigated via visual observation and X‐ray computed tomography. The elucidation of the channel structure provides information on the melting and crystallization behaviors of the PCM, which are shown schematically.

show abstract

Experimental Investigation of a Spiral Tube Embedded Latent Thermal Energy Storage Tank Using Paraffin as PCM

Cited by 18 publications

References 17 publications

Review on solar thermal energy storage technologies and their geometrical configurations

Review on solar thermal energy storage technologies and their geometrical configurations

Effect of Charging and Discharging Process of PCM with Paraffin and Al<sub>2</sub>O<sub>3</sub> Additive Subjected to Three Point Temperature Locations

Channel formation and visualization of melting and crystallization behaviors in direct‐contact latent heat storage systems

Contact Info

Product

Resources

About