Indoor Solar Thermal Energy Saving Time with Phase Change Material in a Horizontal Shell and Finned‐Tube Heat Exchanger

Paria, Santanu; Sarhan, Ahmed A.D.; Goodarzi, Marjan; Baradaran, S.; Rahmanian, B.; Yarmand, Hooman; Alavi, Mahmood Abolhasan; Kazi, S.N.; Metselaar, Hendrik Simon Cornelis

doi:10.1155/2015/291657

Cited by 11 publications

(6 citation statements)

References 37 publications

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“…The instability of the operation on both the heat generation and heat consumption causes variation in the flow rate and/or temperature, which results in variations in the heat flux. The purpose of heat storage is to compensate for the difference between heat supply and demand [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Application of Phase Change Material and Artificial Neural Networks for Smoothing of Heat Flux Fluctuations

et al. 2021

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The paper presents an innovative method for smoothing fluctuations of heat flux, using the thermal energy storage unit (TES Unit) with phase change material and Artificial Neural Networks (ANN) control. The research was carried out on a pilot large-scale installation, of which the main component was the TES Unit with a heat capacity of 500 MJ. The main challenge was to smooth the heat flux fluctuations, resulting from variable heat source operation. For this purpose, a molten salt phase change material was used, for which melting occurs at nearly constant temperature. To enhance the smoothing effect, a classical control system based on PID controllers was supported by ANN. The TES Unit was supplied with steam at a constant temperature and variable mass flow rate, while a discharging side was cooled with water at constant mass flow rate. It was indicated that the operation of the TES Unit in the phase change temperature range allows to smooth the heat flux fluctuations by 56%. The tests have also shown that the application of artificial neural networks increases the smoothing effect by 84%.

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Section: Introductionmentioning

confidence: 99%

Application of Phase Change Material and Artificial Neural Networks for Smoothing of Heat Flux Fluctuations

et al. 2021

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“…The fins are used on gas side to increase surface area A. The condensing liquid is on one side and gas on other side (Paria et al, 2015). The geometry of finned tube heat exchanger has mostly circular tubes, rectangular tubes but sometimes elliptical tubes are also used.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 Finned tube heat exchanger (Paria et al 2015) Nanofluid, which is a "term used to describe fluids containing dispersed particles of nanoscale, can be formed from nano particles of single element (e.g. Cu, Fe, and Ag), single element oxide (e.g., CuO, Cu2O, Al2O3, and Tio 2,), alloys (e.g., Cu-Zn, Fe-Ni, and Ag-Cu), multielement oxides (e.g., CuZnFe4O4, Ni Fe 2O4, and ZnFe 2O4), metal carbides (e.g., SiC, B4C, and ZrC ), metal nitrides (e.g., SiN, TiN, and AlN),and carbon materials (e.g., graphite, carbon nanotubes, and diamond) suspended in water, ethanol, EG, oil, and refrigerants" (Gupta et al, 2017;Gupta, Tiwari, and Ghosh, 2018;Sundar et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis and performance enhancement of compact heat exchanger using computational fluid dynamics

Agarwal¹,

O.B²,

Pitso³

2021

JER is an international, peer-reviewed journal that publishes f

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Compact heat exchangers are used in various industries due to its good efficiency and compactness. The fluid used in heat exchanger has significant effect in augmentation of heat transfer characteristics of heat exchangers. In recent years, researchers have shown keen interest in uses of nanofluids for heat exchangers due to its good thermo-physical properties. The present study explores the application of ZnO /water nanofluid on compact heat exchanger with circular tubes using techniques of Computational Fluid Dynamics (CFD). The CAD model is developed in Creo design software and CFD analysis is conducted using ANSYS CFX. The volume concentration of nanoparticles used for analysis are .02,.04 and .07. The CFD analysis is conducted for both laminar and turbulent flow regime using SSG shear stress turbulence model. The temperature distribution, Nusselt number and pressure plots are generated to determine heat transfer characteristics. The results are encouraging, and significant enhancement of heat transfer is achieved using ZnO/water nanofluid. However, the pumping power requirement also increased with increase in nanoparticle concentration.

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“…It seemed that the convection was limited by the geometric properties of the device in the study. S. Paria et al [8] conducted on the processes of a stationary phase change material (PCM) in a shell around a finned-tube heat exchanger system based on experimental and numerical simulation. The results indicated that, by increasing the Reynolds number from 1000 to 2000, the total melting time decreases by 58%.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Heat Transfer Fluid Velocity on Heat Exchange Efficiency in Cold Energy Storage Tank: A Numerical Simulation Study

Nguyen¹,

Nguyen²,

Nguyen³

et al. 2020

JENR

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Developing a cold thermal energy storage (CTES) technology is one of the most effective methods to solve energy shortage and environmental pollution all over the world. The current study deals with the modelling and simulation of a cold thermal energy storage tank consisting of an polyvinyl chloride pipe (PVC) heat exchanger partially filled with a phase change material (PCM). Water, as the heat transfer fluid (HTF), flows through the inner tubes and the outer one while propylene glycol as the phase change material fills. This paper focuses on studying the effect of the velocity characteristics on the heat transfer efficiency of polyvinyl chloride pipe (PVC) heat exchanger in cold thermal energy storage system by the numerical simulation. In this paper, the detail of heat transfer performance within the heat exchanger is numerically solved using computational fluid dynamics (CFD), for various velocity as well as different heat transfer for optimal design. Several results of changes in the temperature field at the outlet of the cold thermal energy storage tank are presented when the inlet water velocity changes from 1 m/s to 1.4 m/s. The results indicate that low input water velocity will provide better heat exchange efficiency. However, it is required to make sure that the flow inside the heat exchanger is the turbulent flow because the study uses turbulent flow modules.

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Indoor Solar Thermal Energy Saving Time with Phase Change Material in a Horizontal Shell and Finned‐Tube Heat Exchanger

Cited by 11 publications

References 37 publications

Application of Phase Change Material and Artificial Neural Networks for Smoothing of Heat Flux Fluctuations

Application of Phase Change Material and Artificial Neural Networks for Smoothing of Heat Flux Fluctuations

Numerical analysis and performance enhancement of compact heat exchanger using computational fluid dynamics

The Effect of Heat Transfer Fluid Velocity on Heat Exchange Efficiency in Cold Energy Storage Tank: A Numerical Simulation Study

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