Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)

YiShui, Tian; Zhao, C.Y.

doi:10.1016/j.ijheatmasstransfer.2012.11.034

Cited by 100 publications

(24 citation statements)

References 28 publications

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“…However, they have rather low thermal conductivities, most of which are below 0.2 W/(mK) [27], which can jeopardise thermal energy storage. Despite the fact that some inorganic PCMs can have a thermal conductivity as high as 0.5 W/(mK), they do have very serious problems, such as super-cooling which decrease the effective storage capacity [28], and phase segregation which changes the chemical composition of the core material [29]. Another problem for organic PCMs like paraffin waxes and alkanes [30] is their flammability, which can raise safety issues in building applications.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

2014

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Abstract:Incorporating Phase Change Materials (PCMs) into traditional building structures has been considered as an effective way to reduce the mismatch between energy supply and demand and in turn to minimise energy consumption (cooling/heating energy). For building applications, Phase Change Material Wallboards (PCMWs) are of particular interest due to their easy installation to existing buildings for refurbishment. Both interior and exterior PCMWs are investigated in this paper, with a numerical study examining the effects of wallboard thermal properties on its thermal performance. These influencing factors include melting temperature, melting range, latent heat, thermal conductivity and surface heat transfer coefficient. An effective heat capacity model is adopted to consider latent heat with the model validated by an experiment. Inner surface temperature and diurnal energy storage are chosen as the evaluation criteria when comparing the thermal performance between different PCMWs. By analysing the effects of influencing factors on the system thermal performance, this study serves as a useful guide for selection of PCMs in energy-efficient buildings.

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Section: Thermal Conductivitymentioning

confidence: 99%

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

2014

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“…The literature presents information on the application of open-cell metal foam in the construction of compact heat-exchangers [3,11], thermal storage [18,20] and heat regenerators [2,21], as well as chemical reactors [10,19] including catalytic reactors [7,13]. Moreover, foams can be used in evaporators of cooling equipment [6,8] and solar collectors [22], as well as in column equipment [12,15].…”

Section: Metal Foams In Construction Of Process Equipmentmentioning

confidence: 99%

Metal foams as structural packing in the construction of process equipment

Dyga

2017

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Metal foams as structural packing in the construction of process equipment Piany metalowe jako wypełnienia strukturalne w budowie aparatury przemysłowej AbstractThe paper presents possibilities of the application of open-cell metal foams in the construction of process equipment. The article also describes results of own experimental studies on hydrodynamic and thermal phenomena occurring during fluid flow through channels packed with aluminium alloy foams. The collected experimental data enabled to determine, among others, pressure drops and the heat transfer coefficient, and to indicate main gas-liquid flow patterns.Keywords: open-cell aluminium foam, gas-liquid flow, pressure drop, flow pattern, heat transfer Streszczenie W artykule przedstawiono możliwości wykorzystania otwartokomórkowych pian metalowych w budowie aparatury przemysłowej. Opisano wyniki własnych badań doświadczalnych dotyczących zjawisk hydrodynamicznych i cieplnych zachodzących podczas przepływu płynu przez kanały wypełnione pianami ze stopów aluminium. Zebrane dane eksperymentalne pozwoliły określić m.in. wartości oporów przepływu i współczynnika wnikania ciepła oraz wskazać podstawowe struktury przepływu gaz-ciecz.Słowa kluczowe: otwartokomórkowa piana aluminiowa, przepływ gaz-ciecz, opory przepływu, struktury przepływu, wnikanie ciepła

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“…The performance of copper foam applied to LTTES systems has been experimentally and analytically examined by several authors [16,[44][45][46][47][48][49][50][51][52]. Most studies test and/or compare CF with other materials and examine its potential to improve the performance of LTTES systems.…”

Section: Copper Foam Studies For Lttesmentioning

confidence: 99%

“…Most studies test and/or compare CF with other materials and examine its potential to improve the performance of LTTES systems. In particular, Zhao et al [46,47,49] have compared several metal foams to CF. In the study by [46], they conclude that the addition of metal foams can increase the overall heat transfer rate of PCMs by 3-10 when paraffin wax RT 27 and CF are employed, and similarly in [46] they show that copper presents better results than graphite.…”

Section: Copper Foam Studies For Lttesmentioning

confidence: 99%

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Review of Thermal Materials for CSP Plants and LCOE Evaluation for Performance Improvement using Chilean Strategic Minerals: Lithium Salts and Copper Foams

et al. 2016

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Abstract:The improvement of solar thermal technologies in emerging economies like Chile is particularly attractive because the country is endowed with one of the most consistently high solar potentials, lithium and copper reserves. In recent years, growing interests for lithium based salts and copper foams in application of thermal technologies could change the landscape of Chile transforming its lithium reserves and copper availability into competitive energy produced in the region. This study reviews the technical advantages of using lithium based salts-applied as heat storage media and heat transfer fluid-and copper foam/Phase Change Materials (PCM) alternatives-applied as heat storage media-within tower and parabolic trough Concentrated Solar Power (CSP) plants, and presents a first systematic evaluation of the costs of these alternatives based on real plant data. The methodology applied is based on material data base compilation of price and technical properties, selection of CSP plant and estimation of amount of required material, and analysis of Levelized Cost of Electricity (LCOE). Results confirm that some lithium based salts are effective in reducing the amount of required material and costs for the Thermal Energy Storage (TES) systems for both plant cases, with savings of up to 68% and 4.14% in tons of salts and LCOE, respectively. Copper foam/PCM composites significantly increase thermal conductivity, decreasing the volume of the TES system, but costs of implementation are still higher than traditional options.

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Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)

Cited by 100 publications

References 28 publications

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

Metal foams as structural packing in the construction of process equipment

Review of Thermal Materials for CSP Plants and LCOE Evaluation for Performance Improvement using Chilean Strategic Minerals: Lithium Salts and Copper Foams

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