Transient performance analysis of concentrating solar thermal power plant with finned latent heat thermal energy storage

Raul, Appasaheb; Saha, Sandip K.; Jain, Mohit

doi:10.1016/j.renene.2019.07.117

Cited by 40 publications

(4 citation statements)

References 53 publications

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“…To evaluate the impact of fin number and thickness of fin on the overall performance of LHTES, Raul et al 91 studied numerically using shell‐tube heat exchanger with different fin numbers such as 48, 36, 24 and 12 and thickness of fins 4, 3, 2 and 1 mm. For analysis, PCM and HTF used was NaNO 3 and Dowtherm‐A, respectively.…”

Section: Performance Enhancement Methodsmentioning

confidence: 99%

Review on thermal performance of heat exchanger using phase change material

Das

Kar

Sarangi

2022

Intl J of Energy Research

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This article reports detailed investigation of using different Phase Change Materials (PCM) in various designs of Thermal Energy Storage (TES) Devices: specifically, heat exchanger. The focus is on the performance analysis of different types of heat exchangers acting as TES having various PCMs which are substantially reviewed in this paper. The study highlights the difference in their geometry and performance output. Further, the importance of different performance enhancement methods with parametric study of different heat exchangers using PCM is described. From the detailed investigation, finally, it is realised that the different factors such as no. of outer tubes, no. of inner tubes, tube material selected, type of PCM, provision of an extended surface, use of different metal foams and nanoparticles, various types of composites, charging and discharging characteristics and packed and cascaded units are different heat transfer enhancement methods to improve the heat transfer. A novel kind of heat exchanger known as Webbed tube heat exchanger using PCM is discussed for an efficient TES unit. Further, a review of quantitative analysis of melting time, solidification time, charging and discharging time is discussed.

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Section: Performance Enhancement Methodsmentioning

confidence: 99%

Review on thermal performance of heat exchanger using phase change material

Das

Kar

Sarangi

2022

Intl J of Energy Research

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“…Dhaidan and Khodadadi (2017) reviewed the performance of phase change material based latent energy storage systems that typically use metal-based high thermal conductivity extended surfaces. In another study (Raul et al, 2020), addition of a fin in the latent heat storage system used in solar thermal power plants (STPP) is reported to enhance effective thermal conductivity and efficiency of a STPP. Enhancement of heat transfer process by means of fins are more economical and power-saving approach.…”

Section: Introductionmentioning

confidence: 99%

Continuous composite longitudinal fins under oscillating boundary conditions: a lattice Boltzmann solution

Sahu,

Bhowmick

2024

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PurposeTransient response of continuous composite material (CCM) fin made of high thermally conductive composite material is presented. The continuously varying effective properties of composite material such as thermal conductivity, heat capacity and density have been modelled using the Mori-Tanaka homogenization theory and rule of mixture. Additionally, temperature dependency of thermal conductivity, heat generation (composite materials) and convection coefficient (fluid properties) have also been incorporated. Different base boundary conditions are addressed such as oscillating heat flow, oscillating temperature, step-changing heat flow and step-changing temperature. At the other boundary, the fin is assumed to have a convective tip.Design/methodology/approachLattice Boltzmann method is implemented using an in-house source code for obtaining the numerical solution of typical non-linear heat balance equation of the aforementioned problem under various transient base boundary conditions.FindingsThe effects of various thermal parameters such as material diffusivity ratio and conductivity ratio, area ratio and Biot number on transient response of fin and temperature distribution of fins are studied and interpreted. The heat transfer rate and time for attainment of steady state temperature of metal matrix composite (MMC) fin are found to be proportionally dependent on their diffusivity ratio. Additionally for higher values of area ratio and biot number, MMC fins are reported to dissipate the heat more efficiently in comparision to homogeneous fins in terms of time required to attain the steady state and surface temperature.Practical implicationsResponse of transient fin associated with advanced class of material can facilitates the practicing engineers for designing high-performance and/or miniaturized thermal management devices as used in electronic packaging industries.Originality/valueStudies of composite fin consisting of laminating second layer of material over the first layer have been reported previously, however transient response of CCM fin fabricated by continuously varying the volume fraction of two materials along the fin length has not been reported till date. Such material finds its application in thermal management and electronic packaging industries. Results are plotted in form of a graph for different application-wise material combinations that have not been reported earlier, and it can be treated as design data.

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“…To resolve this issue, various passive heat transfer enhancement techniques have been implemented. Inserting fins [3], dispersion of highly conductive nanoparticles within the PCM [4,5] and embedding passive heat transfer devices such as heat pipe [6] is are common techniques to improve the thermal performance of LHTES systems.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Analysis of a High-Temperature Heat Pipe-Assisted Latent Heat Thermal Energy Storage System Enhanced by Metal Foam

Tiari

Mahdavi

2020

Proceeding of 5th Thermal and Fluids Engineering Conference (TFEC)

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Numerical simulations are performed to analyse the thermal characteristics of a latent heat thermal energy storage system with phase change material embedded in highly conductive porous media. A network of finned-heat pipes is also employed to enhance the heat transfer within the system. ANSYS-FLUENT 19.0 is used to create a transient multiphase computational model to simulate the thermal behavior of the storage unit. Copper foam is the porous media used to enhance the heat transfer and is impregnated with the phase change material, potassium nitrate (KNO3). The effects of porosity of the metal foam and quantity of heat pipes on the thermal characteristics of storage unit during the charging process have been studied.

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Transient performance analysis of concentrating solar thermal power plant with finned latent heat thermal energy storage

Cited by 40 publications

References 53 publications

Review on thermal performance of heat exchanger using phase change material

Review on thermal performance of heat exchanger using phase change material

Continuous composite longitudinal fins under oscillating boundary conditions: a lattice Boltzmann solution

Heat Transfer Analysis of a High-Temperature Heat Pipe-Assisted Latent Heat Thermal Energy Storage System Enhanced by Metal Foam

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