Parametric investigation of photovoltaic-thermal systems integrated with porous phase change material

Purpose Nanotechnology has developed gradually in recent years and it is encountered in various applications. It has many usage area especially in energy systems. The purpose of this study, in a photovoltaic thermal system, thermal behaviours of a PV panel has been investigated by energy and exergy analysis method using a phase change material inserted 5 per cent weighted Al2O3 nanoparticle. Design/methodology/approach In this study, one of the three different PV panels was kept normally, the other one was filled with a phase changing material (paraffin-wax) and the last panel was filled with the mixture of a nanoparticle and paraffin-wax. Findings After the analyses, especially during the time intervals when the radiation is high, it is found that the panel with Np-paraffin mixture has a high electrical and thermal efficiency. In addition, as a result of the exergy analyses, average exergy efficiency of the panel with Np-paraffin mixture has been determined as 10 per cent, whereas that of the panel with paraffin as 9.2 per cent. Originality/value Nanoparticles had not been used with PCMs in photovoltaic–thermal systems in the studies made before.

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Phase-Change Material to Thermally Regulate Photovoltaic Panels to Improve Solar to Electric Efficiency

Volume 8B: Heat Transfer and Thermal Engineering ◽

10.1115/imece2015-50650 ◽

2015 ◽

Cited By ~ 2

Author(s):

Andrew H. Rosenthal ◽

Bruna P. Gonçalves ◽

J. A. Beckwith ◽

Rohit Gulati ◽

Marc D. Compere ◽

...

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Temperature Regulation ◽

Heat Dissipation ◽

Waste Heat ◽

Electrical Power ◽

Solar Irradiation ◽

Thermal Systems ◽

Pv Panel ◽

Change Material

This paper investigates the use of phase-change material (PCM) for temperature regulation of a rack-mounted photovoltaic (PV) solar panel. PV panels exhibit a significant decrease in electrical efficiency as temperature trends higher. Current PV panels are approximately 10–16% efficient at harnessing incident solar irradiation into effective electrical power. The remaining solar irradiation that is not converted to electricity will heat the PV panel and decrease efficiency. Using PCM for temperature regulation and temporary heat storage in photovoltaic/thermal systems (PVT) is an emerging technology that has attracted attention recently. The PCM absorbs heat and regulates peak temperature, which allows the PV panel to operate at lower temperatures during peak solar conditions. Further, the waste heat stored in the PCM can be used for other applications. The main focus of this paper is to experimentally evaluate the heat dissipation of four different PCM containment configurations from a simulated PV panel.

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Microencapsulated phase-change material suspensions for heat transfer in spacecraft thermal systems

Journal of Spacecraft and Rockets ◽

10.2514/3.26753 ◽

1996 ◽

Vol 33 (2) ◽

pp. 278-284 ◽

Cited By ~ 110

Author(s):

J. C. Mulligan ◽

D. P. Colvin ◽

Y. G. Bryant

Keyword(s):

Heat Transfer ◽

Phase Change ◽

Phase Change Material ◽

Thermal Systems ◽

Microencapsulated Phase Change Material ◽

Change Material

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A Parametric Investigation on Energy-Saving Effect of Solar Building Based on Double Phase Change Material Layer Wallboard

International Journal of Photoenergy ◽

10.1155/2018/1829298 ◽

2018 ◽

Vol 2018 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Xiaoxiao Tong ◽

Xingyao Xiong

Keyword(s):

Phase Transition ◽

Phase Change ◽

Phase Change Material ◽

Wall Temperature ◽

Parametric Investigation ◽

Double Phase ◽

Phase Transition Temperatures ◽

Saving Effect ◽

Change Material ◽

Inside Wall

In order to further understand the thermal performance of the double phase change material (PCM) layer wallboard, the wallboard model was established and a comprehensively numerical parametric investigation was carried out. The variation laws of inner wall temperature rise and the heat flux transferred under different phase transition temperatures and thermal conductivities are presented in detail. The main results show that the temperature of the inside wall for case 2 can be reduced by about 1.5 K further compared to that for case 1. About 83% of the heat transferred from the outside is absorbed by the PCM layer in case 2. Reducing the phase transition temperature of the PCM layer can decrease the inside wall temperature to a certain extent in the period of high temperature. The utilization of double PCM layers shows much more performance compared to that of the single PCM layer case, and the temperature of the inside wall can be reduced by 2 K further.

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Experimental study of using both ethylene glycol and phase change material as coolant in photovoltaic thermal systems (PVT) from energy, exergy and entropy generation viewpoints

Energy ◽

10.1016/j.energy.2018.07.069 ◽

2018 ◽

Vol 162 ◽

pp. 210-223 ◽

Cited By ~ 32

Author(s):

Arash Kazemian ◽

Mohammad Hosseinzadeh ◽

Mohammad Sardarabadi ◽

Mohammad Passandideh-Fard

Keyword(s):

Experimental Study ◽

Ethylene Glycol ◽

Phase Change ◽

Phase Change Material ◽

Entropy Generation ◽

Thermal Systems ◽

Change Material

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Hybrid photovoltaic-thermal systems utilizing liquid-gas phase change material

Energy Sources Part A Recovery Utilization and Environmental Effects ◽

10.1080/15567036.2019.1659459 ◽

2019 ◽

pp. 1-19 ◽

Cited By ~ 2

Author(s):

Sudhansu Sekhar Das ◽

Pramod Kumar ◽

Sarbjot Singh Sandhu

Keyword(s):

Phase Change ◽

Gas Phase ◽

Phase Change Material ◽

Thermal Systems ◽

Change Material

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Characterization of Hybrid-nano/Paraffin Organic Phase Change Material for Thermal Energy Storage Applications in Solar Thermal Systems

Energies ◽

10.3390/en13195079 ◽

2020 ◽

Vol 13 (19) ◽

pp. 5079 ◽

Cited By ~ 4

Author(s):

Manoj Kumar Pasupathi ◽

Karthick Alagar ◽

Michael Joseph Stalin P ◽

Matheswaran M.M ◽

Ghosh Aritra

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Thermal Energy ◽

Physical Characteristics ◽

Ceo2 Nanoparticles ◽

Solar Thermal ◽

Hybrid Nanoparticles ◽

Experimental Investigations ◽

Thermal Systems ◽

Change Material

In this work, the experimental investigations were piloted to study the influence of hybrid nanoparticles containing SiO2 and CeO2 nanoparticles on thermo-physical characteristics of the paraffin-based phase change material (PCM). Initially, the hybrid nanoparticles were prepared by blending equal mass of SiO2 and CeO2 nanoparticles. The hybrid-nano/paraffin (HnP) samples were prepared by cautiously dispersing 0, 0.5, 1.0, and 2.0 percentage mass of hybrid nanoparticles inside the paraffin, respectively. The synthesized samples were examined under different instruments such as field emission scanning electron microscope (FESEM), Fourier transform infrared spectrometer (FTIR), differential scanning calorimetry (DSC), thermogravimetric analyzer (TGA), and thermal properties analyzer to ascertain the influence of hybrid nanoparticles on thermo-physical characteristics of the prepared samples. The obtained experimental results proved that the hybrid nanoparticles were uniformly diffused in the paraffin matrix without affecting the chemical arrangement of paraffin molecules. Prominently, the relative thermal stability and relative thermal conductivity of the paraffin were synergistically enriched up to 115.49% and 165.56%, respectively, when dispersing hybrid nanoparticles within paraffin. Furthermore, the hybrid nanoparticles appropriately amended the melting and crystallization point of the paraffin to reduce its supercooling, and the maximum reduction in supercooling was ascertained as 35.81%. The comprehensive studies indicated that the paraffin diffused with SiO2 and CeO2 hybrid nanoparticles at 1.0 mass percentage would yield a better outcome compared to the next higher mass fractions without much diminishing the latent heat of paraffin. Hence, it is recommended to utilize the hybrid-nano/paraffin with 1.0 mass fraction of the aforementioned hybrid nanoparticles for effectively augmenting the thermal energy capacity of low-temperature solar thermal systems.

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