Thermal energy storage materials and systems for solar energy applications

Alva, Guruprasad; Liu, Lingkun; Huang, Xiang; Fang, Guiyin

doi:10.1016/j.rser.2016.10.021

Cited by 784 publications

(261 citation statements)

References 42 publications

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“…The core content of phase change technology is utilizing thermal energy storage/release function of phase change materials (PCMs) to manage thermal energy. During the past decades, PCMs have been widely utilized in industrial solar energy, building energy saving, waste heat recovery, battery thermal management, and so on . Commonly used PCMs are alkanes, paraffin, fatty acids, and polyols.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

Jia

Wang

et al. 2020

Int J Energy Res

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Summary Using palmitic acid (PA) as an organic phase change material (PCM), a series of PA/diatomite composite PCMs (CPCMs) composed of PA absorbed into diatomite mesopores with different mass contents were made through direct impregnation method. Nitrogen adsorption‐desorption curves indicated the porous structure of diatomite with the specific surface area and the mesopore peak at 40 m2/g and 3 to 5 nm, respectively. The form‐stability measurement indicated that the maximum mass loading capacity of PA was 55 wt%. The melting temperature and fusion enthalpy of the PA/diatomite CPCM (55 wt%) were calculated from DSC at 63°C and 88 J/g, respectively. The thermal cycle test implied that the PA/diatomite CPCM with 55‐wt% PA loading showed excellent thermal reliability after 1000 thermal cycles. Moreover, the composite has thermal conductivity at 0.5810 W/m·K and enhanced thermal storage/release rate. PA/diatomite CPCM (55 wt% PA) was a suitable candidate for modern building energy saving and industrial solar energy.

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Section: Introductionmentioning

confidence: 99%

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

Jia

Wang

et al. 2020

Int J Energy Res

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“…In solar latent heat storage systems, different types of paraffin wax is commonly used. Comparing the volume of heat storage material requirements between water and phace change materials, thus, the size and cost of the solar systems with water as a thermal storage medium would increase . The limitation of using phase change materials as thermal storage units includes the leakage of phase change material (PCM), pressure management, compatibility, and higher cost.…”

Section: Introductionmentioning

confidence: 99%

A review on thermal energy storage systems in solar air heaters

Haldorai¹,

Gurusamy²,

Pradhapraj

2019

Int J Energy Res

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Summary The drying needs of agricultural, industrial process heat requirements and for space heating, solar energy is one of the prime sources which is renewable and pollution free. As the solar energy is inconsistent and nature dependent, more often there is a mismatch between the solar thermal energy availability and requirement. This drawback could be addressed to an extent with the help of thermal energy storage systems combined with solar air heaters. This review article focuses on solar air heaters with integrated and separate thermal energy storage systems as well as greenhouses with thermal storage units. A comprehensive study was carried out in solar thermal storage units consisting of sensible heat storage materials and latent heat storage materials. As the phase change heat storage materials offer many advantages over the sensible heat storage materials, the researchers are more interested in this system. The charging and discharging characteristics of thermal storage materials with various operational parameters have been reported. All the possible solar air heater applications with storage units have also been discussed.

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“…However, even if the deployment of a TES can be conceptually an effective solution, its implementation on real applications must satisfy very restrictive requirements, both technically and economically . Considering these boundaries, the search of technically high‐performing and cost‐effective TES solutions has become a priority for the industrial and scientific communities . Among other TES concepts, packed bed systems have been identified in the last years as a very promising technology .…”

Section: Introductionmentioning

confidence: 99%

Operation strategies guideline for packed bed thermal energy storage systems

et al. 2018

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Summary Packed bed thermal energy storage (TES) systems have been identified in the last years as one of the most promising TES alternatives in terms of thermal efficiency and economic viability. The relative simplicity of this storage concept opens an important opportunity to its implementation in many environments, from the renewable solar‐thermal frame to the industrial waste heat recovery. In addition, its implicit flexibility allows the use of a wide variety of solid materials and heat transfer fluids, which leads to its deployment in very different applications. Its potential to overcome current heat storage system limitations regarding suitable temperature ranges or storage capacities has also been pointed out. However, the full implementation of the packed bed storage concept is still incomplete since no industrial scale units are under operation. The main underlying reasons are associated to the lack of a complete extraction of the full potential of this storage technology, derived from a successful system optimization in terms of material selection, design, and thermal management. These points have been evidenced as critical in order to attain high thermal efficiency values, comparable to the state‐of‐the‐art storage technologies, with improved technoeconomic performance. In order to bring this storage technology to a more mature status, closer to a successful industrial deployment, this paper proposes a double approach. First, a low‐cost by‐product material with high thermal performance is used as heat storage material in the packed bed. Second, a complete energetic and efficiency analysis of the storage system is introduced as a function of the thermal operation. Overall, the impact of both the selected storage material and the different thermal operation strategies is discussed by means of a thermal model which permits a careful discussion about the implications of each TES deployment strategy and the underlying governing mechanisms. The results show the paramount importance of the selected operation method, able to increase the resulting cycle and material usage efficiency up to values comparable to standard currently used TES solutions.

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Thermal energy storage materials and systems for solar energy applications

Cited by 784 publications

References 42 publications

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

A review on thermal energy storage systems in solar air heaters

Operation strategies guideline for packed bed thermal energy storage systems

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