Experimental analysis of a low cost phase change material emulsion for its use as thermal storage system

Delgado, Mónica; Lázaro, Ana; Mazo, Javier; Peñalosa, Conchita; Dolado, Pablo; Zalba, Belén

doi:10.1016/j.enconman.2015.09.033

Cited by 55 publications

(13 citation statements)

References 29 publications

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“…For instance, Murray and Groulx [10] evaluated a PCM based TES system and achieved about 44.3% increase in energy storage density as compared with water based system. Similar investigation carried out by Delgado et al [13] with PCM emulsion, also achieved an increase of 34% in energy storage capacity as against water based TES system. However, PCMs generally possess low thermal conductivity and hence poor thermal response factor.…”

Section: Introductionsupporting

confidence: 77%

“…Various researchers have also explored the possibility of using phase change materials (PCMs) as heat storage media since they have much higher energy storage capacity and energy storage density than water [2,[10][11][12][13]. For instance, Murray and Groulx [10] evaluated a PCM based TES system and achieved about 44.3% increase in energy storage density as compared with water based system.…”

Section: Introductionmentioning

confidence: 99%

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Development of microencapsulated phase change material for solar thermal energy storage

Darkwa

Kokogiannakis

2017

Applied Thermal Engineering

116

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In this paper a novel microencapsulated phase change material (MF-3) has been developed and tested for solar assisted hot water storage systems. Even though the morphology of the sample was affected by the type of emulsifier used for fabrication it recorded the highest energy storage capacity of 126 kJ/kg with encapsulation efficiency of 97.4% as compared with other developed samples. For the purpose of assessing its thermal effectiveness it was theoretically evaluated in a compacted fixed bed TES unit and found to be capable of achieving a higher energy storage density as well as relatively smaller physical storage size than water based system. Despite the overall effective thermal conductivity being slightly less than water, its value was still about twice as high as most current PCM storage units. Experimental evaluation is therefore strongly encouraged.

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Section: Introductionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Development of microencapsulated phase change material for solar thermal energy storage

Darkwa

Kokogiannakis

2017

Applied Thermal Engineering

116

View full text Add to dashboard Cite

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“…A PCM emulsion is another form used in the TES system. Delgado et al experimentally analyzed the performance of a commercial tank with a helical coil heat exchanger and a PCM emulsion functioning as a TES system. The solid content in the PCM emulsion was approximately 60%.…”

Section: Application Of Solid–liquid Pcms In An Lhtes Systemmentioning

confidence: 99%

Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

Zhang¹,

Yuan²,

Cao³

et al. 2018

Adv Eng Mater

325

102

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This paper provides a review of the solid-liquid phase change materials (PCMs) for latent heat thermal energy storage (LHTES). The commonly used solid-liquid PCMs and their thermal properties are summarized here firstly. Two major drawbacks that seriously limit the application of PCMs in an LHTES system, that is, low thermal conductivity and liquid leakage, are discussed. Various methods for enhancing the thermal conductivity and heat transfer of solid-liquid PCMs are explained. Previous studies regarding formstable composite PCMs and microencapsulated PCMs are also presented. Furthermore, applications of the solid-liquid PCMs used in LHTES and thermal management systems are introduced and analyzed. Finally, future outlooks and research topics are proposed.

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“…The results are shown as overall thermal power output over time, time dependent thermal power and state of phase. Delgado et al (2015) compared the technical performance of PCM slurries heat exchangers with the information provided in literature and highlighted the difficulties to estimate common performance parameters. Pinnau (2009) compared different latent thermal energy storage systems in terms of storage density (more specific the actual storage density related to the theoretical maximum) and a normed power.…”

Section: Introductionmentioning

confidence: 99%

Technical Performance Assessment of Phase Change Material Components

Lázaro¹,

Delgado²,

König-Haagen³

et al. 2019

Proceedings of the ISES Solar World Congress 2019

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Thermal energy storage systems using phase change materials (PCM) should meet the application requirements in terms of technical and economical parameters. The storage capacity and storage density are the two main parameters for the selection of a suitable storage material. However, among the technical parameters, high thermal power is one of the most challenging characteristics for a PCM thermal storage. Most of the materials currently used as PCM have intrinsically low thermal conductivity; therefore, the component design has to compensate this. This paper presents a definition of a set of parameters to describe PCM heat exchangers in terms of capacity and density. Furthermore, a power performance assessment is proposed based on the analysis of the results obtained for different storage systems based on the same geometry. A validated numerical model is used to assess the suitability of the proposed parameters to compare PCM systems with different configurations and operation conditions. The influence of Biot number, Stefan number, HTF volume and NTU (varied by different mass flows) on the proposed parameters is studied.

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Experimental analysis of a low cost phase change material emulsion for its use as thermal storage system

Cited by 55 publications

References 29 publications

Development of microencapsulated phase change material for solar thermal energy storage

Development of microencapsulated phase change material for solar thermal energy storage

Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

Technical Performance Assessment of Phase Change Material Components

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