scholarly journals PVT Cell Performance Characteristics and Efficiency with Phase Change Material

2020 ◽  
Vol 9 (5) ◽  
pp. 1005-1012
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Storage Capacity ◽  
Design Parameters ◽  
Back Side ◽  
Photoelectric Conversion ◽  
Electrical Efficiency ◽  
Pv Panel ◽  
Fin Design ◽  
Change Material

The PV panel temperature increase causes the drop in output power and electrical efficiency . The power generation of PV module is highly influenced by the temperature and so cooling is required to increase the PV panel electrical efficiency. PV panel electrical efficiency can be increased by keeping the low operating temperature as low as possible, preferably at temperature of 250 C and irradiation 1000 w/m2 . The temperature regulation with efficient control methods of PV modules can increase its efficiency by a significant level. The PVT-PCM systems elevated about 28 to 42% more heat storage capacity than that of for a longer period and around 8 to 12 % escalation in output. The application of phase change materials (PCM) can be a better solution for this purpose, because phase change material (PCM) has large energy storage capacity and nearly constant charging / discharging temperature during phase change transitions .It can be used to regulate the PV cell temperature and store the thermal energy for solar heating systems photoelectric conversion efficiency of a PV system was improved by using different PCM. In this study we are trying to increase the efficiency by using different fin layout of the heat sink and comparing the experimental data for optimal fin design to effectively disperse heat through PCM material. The PVT panel surface back side was attached with the aluminum container with different (Geometric, Spherical & fins) configurations with PCM and with out PCM of single/different materials. Present study carried on aluminum H-30 box holding PCM material with fins and covering plate to which the photo voltaic cell attached then a different sensors to collect temperature data and irradiation levels at different regions. The design parameters was changed with fins and geometrical shape and found the derating factor. The derating factor was found with fins and with out pins along with PCM and with out PCM. Both experimental and theoretical values were compared ,the study revealed that the derating factor value was 13.2 without PCM the and 4.40 with PCM with out fins . The results revealed that relation between experimental measurement values and theoretical values . The study confirmed PCM with better fin design will increase the effective surface area can increase the cooling of PVT panel , results the escalation in electrical out put

Numerical Performances Study of Curved Photovoltaic Panel Integrated with Phase Change Material

2020 ◽  
Vol 22 (4) ◽  
pp. 1439-1452
Author(s):  
Mohamed L. Benlekkam ◽  
Driss Nehari ◽  
Habib Y. Madani
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Numerical Study ◽  
Numerical Data ◽  
Navier Stokes ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Energy Equations ◽  
Solid Liquid ◽  
Change Material

AbstractThe temperature rise of photovoltaic’s cells deteriorates its conversion efficiency. The use of a phase change material (PCM) layer linked to a curved photovoltaic PV panel so-called PV-mirror to control its temperature elevation has been numerically studied. This numerical study was carried out to explore the effect of inner fins length on the thermal and electrical improvement of curved PV panel. So a numerical model of heat transfer with solid-liquid phase change has been developed to solve the Navier–Stokes and energy equations. The predicted results are validated with an available experimental and numerical data. Results shows that the use of fins improve the thermal load distribution presented on the upper front of PV/PCM system and maintained it under 42°C compared with another without fins and enhance the PV cells efficiency by more than 2%.

Experimental Investigation of Thermal Performance of a Multipurpose PV Solar Collector Wall With Phase Change Material

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Preeda Chantawong
Keyword(s):  
Experimental Investigation ◽  
Solar Radiation ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Performance ◽  
Hot Water ◽  
External Layer ◽  
Indoor Temperature ◽  
Pv Panel ◽  
Change Material

The author reports an experimental investigation of the thermal performance of a multipurpose photovoltanic (PV) solar wall with phase change material (PVSW-PCM). The PVSW-PCM configuration was made of double layers. The external layer consists of a 12 Wp photovoltaic panel attached to a 15 cm thick PCM tank integrating water pipes. The internal wall is an ordinary clear glass pane. There is an 8 cm air gap between the two layers. The PVSW-PCM was integrated into the southern side of a small house of 4.05 m3 volume built by autoclaved aerated concrete block walls 0.07 m thick. On top of the external layer, three glass blocks (3 × 0.2 × 0.2 cm2) are installed to ensure indoor illumination. The absorbed solar radiation by the PV panel and PCM heats the water in the pipes and the air in the gap. The hot water produced is stored in a 10 liters tank located near the roof. At the inner lower part (room side) and the external upper part (ambient) of the gap, a small DC fan (12 V, 0.48 A) box was installed. The fans were connected to the PV panel directly to enhance indoor ventilation. The investigation considered both natural (fans OFF) and PV assisted ventilation. Another similar house without the PVSW-PCM referred to as glass wall (GW) was built and used as a reference for comparison. The experimental results revealed that the indoor temperature of the PVSW-PCM house was considerably lower than that of the GW house. Moreover, the PVSW-PCM could produce hot water temperature of 55–62 °C and induce a ventilation rate proportional to the intensity of solar radiation. Indoor illumination was sufficient for general house use. Therefore, the PVSW-PCM offers a new alternative for architects and engineers to reduce electric energy use for producing hot water and ventilation and save electrical energy consumption of air conditioner, as the indoor temperature is lower than that of the conventional house.

Performance assessment of novel photovoltaic thermal system using nanoparticle in phase change material

2019 ◽  
Vol 29 (4) ◽  
pp. 1490-1505 ◽  
Author(s):  
Alper Ergün ◽  
Hilal Eyinç
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Paraffin Wax ◽  
Thermal System ◽  
Thermal Systems ◽  
Content Type ◽  
Pv Panel ◽  
Photovoltaic Thermal System ◽  
Energy And Exergy Analysis ◽  
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.

Influence of Phase Change Material Application on Photovoltaic Panel Performance

2017 ◽  
Vol 730 ◽  
pp. 563-568 ◽  
Author(s):  
Atthakorn Thongtha ◽  
Hoy Yen Chan ◽  
Paisit Luangjok
Keyword(s):  
Experimental Design ◽  
Phase Change ◽  
Phase Change Material ◽  
Incident Light ◽  
Control Device ◽  
Photovoltaic Module ◽  
Photovoltaic Panel ◽  
Electrical Efficiency ◽  
Pv Module ◽  
Change Material

This study investigated the application of phase change material and fins into photovoltaic panel. The experimental design was divided into 2 cases: conventional photovoltaic and photovoltaic with phase change material and fins. The thermal performance and electrical efficiency was tested under the solar radiation simulator between 500 and 1000 W/m2. The insolation intensity was tested by an incident-light photometer. The power of the nine halogen lamps was controlled by a simple voltage control device. It was found that temperature of normal PV module is constant after the tested time of 20 minutes. The temperatures of PV module with phase change material and fins were lower than a normal PV module throughout the testing duration. Approximately 2-6% of photovoltaic module temperatures have decreased and this have improved the electrical efficiency of about 1-4%. This indicated the use of phase change material and fins is able to decrease the photovoltaic module temperature and thus increase the efficiency of photovoltaic module cooling.

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

2015 ◽  
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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