Characterization and real-time testing of phase-change materials for solar thermal energy storage

Joseph, Alain; Kabbara, Moe; Groulx, Dominic; Allred, Paul; White, Mary Anne

doi:10.1002/er.3336

Cited by 54 publications

(36 citation statements)

References 9 publications

(14 reference statements)

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“…However, few solar thermal plants in the world have employed TES at a large scale. Additionally, the design of TES systems in various domestic solar applications is currently being investigated [20]. Using a computational fluid dynamic approach is also a vastly used method to save money, where FLUENT software seems to be successfully used for different engineering applications [21].…”

Section: Classification and Characteristics Of Storage Systemsmentioning

confidence: 99%

A Comprehensive Review of Thermal Energy Storage

2018

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Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation. TES systems are used particularly in buildings and in industrial processes. This paper is focused on TES technologies that provide a way of valorizing solar heat and reducing the energy demand of buildings. The principles of several energy storage methods and calculation of storage capacities are described. Sensible heat storage technologies, including water tank, underground, and packed-bed storage methods, are briefly reviewed. Additionally, latent-heat storage systems associated with phase-change materials for use in solar heating/cooling of buildings, solar water heating, heat-pump systems, and concentrating solar power plants as well as thermo-chemical storage are discussed. Finally, cool thermal energy storage is also briefly reviewed and outstanding information on the performance and costs of TES systems are included.

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Section: Classification and Characteristics Of Storage Systemsmentioning

confidence: 99%

A Comprehensive Review of Thermal Energy Storage

2018

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“…Compared with nonheat storage prototype, the heat storage parallel and series‐parallel prototype had higher conversion efficiency, longer effective heating time, and better heating stability and practicability, and the heat storage solar collector had compact structure, which was convenient to use . Joseph A et al studied the real‐time performance of PCM for solar thermal. The PCMs absorbed and stored heat energy from the heat pipe during charging cycle; they used two identical PCMs, namely, Tritriacontane and Erythritol, with melting temperatures of 345 and 391 K, respectively, and the results indicated that the efficiency of the system improved by 26% for the normal operation compared with standard solar water heaters without the PCMs.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of urea/ammonia bromide composite phase change material

Liu

Zhang

et al. 2020

Int J Energy Res

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Summary In order to find phase change materials that can be better applied in the field of solar collectors, the phase change heat storage properties of urea (U) and ammonium bromide (AB) were studied. The eutectic ratio of UAB was found by the Edison method, and different additives were added to UAB by dipping and mixing. The structure and property of the composites were characterized by X‐ray powder diffraction (XRD), scanning electron microscope (SEM), differential scanning calorimetry (DSC), and TG/TGA, respectively. The results showed that the eutectic ratio of UAB was 6:3; it was weakly acidic after melting not layered. When 6‐wt% EG and 1‐wt% nanometer titanium dioxide (TiO2) were added, the thermal conductivity of the material increased by 3.62 times; the thermal diffusivity was increased by 6.77 times. When the mass fraction of EG is between 1% and 6%, the larger the mass fraction of EG, the greater the thermal conductivity of the material. After 1000 cycles, the composite material performance was stable; at the same time, the used materials can be used as fertilizers to solve the problem of material pollution, which indicated that the prepared UAB/TiO2/EG composite PCMs had great application prospect in the field of solar collectors.

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“…Methods of storing thermal energy including sensible heat and latent heat have been employed. Many solar air heater applications using latent heat energy storage materials such as hydrated salt, 13 palmitic and lauric acid, 14,15 and technical grade paraffin wax 11,12 have been studied. 8,9 It works on the principle where the material itself will store and release an amount of heat when the phase changes during the operation.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on performance of square tube absorber with phase change material

et al. 2019

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The intermittent nature of solar radiation has decreased the performance efficiency of solar heaters. Integrating the solar heater with thermal energy storage component could increase its performance effectively. In this article, an investigation on the effect of phase change material (PCM) as the thermal energy storage component on the performance of square aluminum tube was carried out experimentally. In the first phase, the temperature behavior of square aluminum tube with two types of PCM, namely, generic plant-based PCM (A2) and paraffin wax (A3), was compared with square aluminum tube without PCM (A1). In the second phase, the performance of square aluminum tube was investigated with different paraffin wax masses of 38 g (B1), 48 g (B2), and 58 g (B3). Based on the result, the A3 tube configuration performed better than A1 and A2 tube configurations with higher heat gain rate (0.08°C/s) and lower heat discharge rate (−0.04°C/s). The B2 tube configuration was found to have maximum heat gain of 3.73 kJ with higher heat discharge rate as compared with other square tube configurations. The average temperature difference between internal and external surface tube of B2 was lower (4.3°C) leading to higher average temperature difference at ambient temperature of 25.3°C. Instantaneous efficiency of the tube B2 is higher than the B1 and B3 tube configurations by 16% and 26%, respectively. The result suggests that the insertion of paraffin wax inside the square absorber tube improves the temperature response of the absorber in the situation of intermittent solar radiation. KEYWORDS cross-matrix absorber (CMA), phase change material (PCM), solar energy, thermal energy storage

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Characterization and real-time testing of phase-change materials for solar thermal energy storage

Cited by 54 publications

References 9 publications

A Comprehensive Review of Thermal Energy Storage

A Comprehensive Review of Thermal Energy Storage

Preparation and characterization of urea/ammonia bromide composite phase change material

Experimental study on performance of square tube absorber with phase change material

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