Effectiveness of direct contact PCM thermal storage with a gas as the heat transfer fluid

Belusko, Martin; Sheoran, Shane; Bruno, Frank

doi:10.1016/j.apenergy.2014.06.004

Cited by 32 publications

(10 citation statements)

References 23 publications

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“…[27] evaluates the use of paraffin microcapsules in PCM and one considers dynamic melting in a tubein-tank system using computational fluid dynamic (CFD) modelling techniques [28]. The use of direct contact PCM for thermal storage using gas as the heat transfer fluid is described [29]. Additionally, Ref.…”

Section: Thermal Energy Storagementioning

confidence: 99%

Energy storage systems for a low carbon future – in need of an integrated approach

2015

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Section: Thermal Energy Storagementioning

confidence: 99%

Energy storage systems for a low carbon future – in need of an integrated approach

2015

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“…This latter heat transfer resistance changes with the movement of the phase change front and thus it changes with the phase change fraction. In five studies [67,142,153,156,157], the effectiveness is determined as a function of the liquid fraction or a variable associated with the global liquid fraction 𝜆 ̅ (Equation 20):…”

Section: 𝑁𝑇𝑈 = 𝐹 ṁ̇𝑐 ∆𝑇 19mentioning

confidence: 99%

Standardised methods for the determination of key performance indicators for thermal energy storage heat exchangers

Beyne

T’Jollyn

Lecompte

et al. 2023

Renewable and Sustainable Energy Reviews

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“…Based on experimental data, an empirical correlation between Nu-Ra is developed using non-linear regression technique, as follow: ̅̅̅̅ = 0.122 * ̅̅̅̅ 0.3404 5.63 * 10 10 ≤ ̅̅̅̅ ≤ 1.37 * 10 11 (35) The coefficient of determination R 2 is 0.98, which illustrates excellent statistical fitting of regression line. In Eq.…”

Section: Energy Efficiencies Of the Lhs Systemmentioning

confidence: 99%

“…Effectiveness-NTU is considered as a decisive technique for characterising and evaluating heat transfer performance for specific designs of LHS systems [35]. This technique is implemented by researchers to assess and optimise thermal performance of proposed design solutions of LHS systems.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic performance of a novel shell-and-tube heat exchanger incorporating paraffin as thermal storage solution for domestic and commercial applications

Khan

2019

Applied Thermal Engineering

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This article is focused to evaluate thermal performance of commercial grade paraffin in a novel shell-and-tube heat exchanger with multi-tube passes and longitudinal fins as latent heat storage (LHS) system. Thermal performance assessments of latent heat storage system are conducted with respects to charging/discharging power, accumulative thermal energy storage/retrieval, thermal efficiencies and effectiveness, heat transfer characterisation and nature of melt front propagation. The average charging and discharging powers are significantly enhanced by 75.53% and 27.04% with an increase in temperature gradient between paraffin and inlet water from 52 o C-62 o C and 15 o C-5 o C, respectively. Likewise, the maximum charging and discharging powers are augmented from 2.15 kW-2.63 kW and 5.18-10.37 kW with an increase in flow rate from 1.5-3 l/min, respectively. Furthermore, the average effectiveness, Nu-Ra and heat transfer coefficient are significantly improved with an increase in temperature gradient and moderately reduced with upgrading volume flow rate. The range of Rayleigh numbers for charging cycles have indicated turbulent nature of melt front movement and supportive behaviour of longitudinal fins orientations towards natural convection. Empirical correlations for average effectiveness and Nu-Ra are developed from experimental results to facilitate design estimation for employment of proposed LHS systems in domestic and commercial applications. These empirical correlations, to evaluate feasibility and employability of LHS systems in practical applications such as domestic hot water supply and space heating to maintain control room temperature, have been successfully implemented in real operating conditions.

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Effectiveness of direct contact PCM thermal storage with a gas as the heat transfer fluid

Cited by 32 publications

References 23 publications

Energy storage systems for a low carbon future – in need of an integrated approach

Energy storage systems for a low carbon future – in need of an integrated approach

Standardised methods for the determination of key performance indicators for thermal energy storage heat exchangers

Thermodynamic performance of a novel shell-and-tube heat exchanger incorporating paraffin as thermal storage solution for domestic and commercial applications

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