Performance comparison of encapsulated PCM PV/T, microchannel heat pipe PV/T and conventional PV/T systems

Modjinou, Mawufemo; Ji, Jie; Yuan, Weiqi; Zhou, Fan; Holliday, Sarah; Waqas, Adeel; Zhao, Xudong

doi:10.1016/j.energy.2018.10.007

Cited by 93 publications

(13 citation statements)

References 18 publications

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“…Modjinou et al comparatively analyzed macro encapsulated PCM, micro-channel heat pipe (MCHP), and regular PVT with water [28]. They found that PVT-PCM and PVT-MCHP enhanced both electrical and thermal performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations Conducted for the Characteristic Study of OM29 Phase Change Material and Its Incorporation in Photovoltaic Panel

Elavarasan¹,

Velmurugan

Subramaniam

et al. 2020

Energies

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The solar photovoltaic (PV) system is emerging energetically in meeting the present energy demands. A rise in PV module temperature reduces the electrical efficiency, which fails to meet the expected energy demand. The main objective of this research was to study the nature of OM29, which is an organic phase change material (PCM) used for PV module cooling during the summer season. A heat transfer network was developed to minimize the experimental difficulties and represent the working model as an electrical resistance circuit. Most existing PV module temperature (TPV) reduction technology fails to achieve the effective heat transfer from the PV module to PCM because there is an intermediate layer between the PV module and PCM. In this proposed method, liquid PCM is filled directly on the back surface of the PV module to overcome the conduction barrier and PCM attains the thermal energy directly from the PV module. Further, the rear side of the PCM is enclosed by tin combined with aluminium to avoid any leakages during phase change. Experimental results show that the PV module temperature decreased by a maximum of 1.2 °C using OM29 until 08:30. However, after 09:00, the OM29 PCM was unable to lower the TPV because OM29 is not capable of maintaining the latent heat property for a longer time and total amount of the PCM experimented in this study was not sufficient to store the PV module generated thermal energy for an entire day. The inability of the presented PCM to lower the temperature of the PV panel was attributed to the lower melting point of OM29. PCM back sheet was incapable of dissipating the stored PCM’s thermal energy to the ambient, and this makes the experimented PCM unsuitable for the selected location during summer.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigations Conducted for the Characteristic Study of OM29 Phase Change Material and Its Incorporation in Photovoltaic Panel

Elavarasan¹,

Velmurugan

Subramaniam

et al. 2020

Energies

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“…The results showed that a PV panel gave around 18% improvement in the electrical power generated than a system without cooling. Another paper proposed micro‐channel heat pipes [34] with a microencapsulated PCM for PV thermal system. The average electrical and thermal efficiency could achieve a maximum of 36.71%.…”

Section: Introductionmentioning

confidence: 99%

Enhancing performance of photovoltaic panel by cold plate design with guided channels

Chin¹,

Gao²,

Han³

et al. 2020

IET Renewable Power Generation

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Photovoltaic (PV) panel is subjected to high temperatures from solar radiation. The performance of the PV panel deteriorates as the PV's operating temperature increases. This study aims to examine the cooling method using a cold plate attached to the PV panel to lower its operating temperature. The cold plate consists of several guided channels or ribbed walls of thickness 0.015 m to direct the circulating water flow from its entrance to the exit point at the back of the PV panel. The experiment demonstrates a decrease of around 21.2°C in surface temperature and improves ∼2% in electrical efficiency, 8% in thermal efficiency and 1.6% in PV panel efficiency as compared to PV panel without a cooling system. The relationship between the average PV's surface temperature and output power is obtained. The uncertainty analysis shows that the average standard deviation in PVs, electrical and thermal efficiency is not more than 1.26% when subjected to differences in the day of measurements, mass flow rate, and pressure of the pump.

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“…'liquid-vapour interface in heat pipes' and solid 'liquid interface'. They are frequently placed in a container, firmly attached to the rear side of the panel [13][14][15][16][17]. For PCMs (phase change materials), the commonly used material is paraffin wax (RT) with different melting points, depending on various atmospheric temperatures.…”

Section: Introductionmentioning

confidence: 99%

Experimental study for thermal regulation of photovoltaic panels using saturated zeolite with water

2019

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This paper presents a novel experimental work for cooling photovoltaic panels using water saturated zeolite/activated alumina. Different system configurations, with 4 different zeolite thicknesses, were tested indoor. Moreover, the zeolite was tested with different added components (fins and metal mesh/particles) for enhancing the system performance. Three different radiations intensities were set for a period of 6 hours and the results were compared with the uncooled system. The experimental results showed a significant solar panels temperature reduction of approximately 14.9°C and 9 °C for radiation intensities of 600 and 1000 W/m 2 respectively. The expected electrical efficiency, according to this temperature reduction, was calculated and an average enhancement of 10% and 7% at radiation of 600 and 1000 W/m 2 intensity respectively was estimated.

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Performance comparison of encapsulated PCM PV/T, microchannel heat pipe PV/T and conventional PV/T systems

Cited by 93 publications

References 18 publications

Experimental Investigations Conducted for the Characteristic Study of OM29 Phase Change Material and Its Incorporation in Photovoltaic Panel

Experimental Investigations Conducted for the Characteristic Study of OM29 Phase Change Material and Its Incorporation in Photovoltaic Panel

Enhancing performance of photovoltaic panel by cold plate design with guided channels

Experimental study for thermal regulation of photovoltaic panels using saturated zeolite with water

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