Experimental Study on the Energy Performance of PV-HP Water Heating System

Chen, Hongbing; Chen, Xilin; Li, Sizhuo; Chu, Sai

doi:10.1016/j.egypro.2015.07.351

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…However, during the night, when water flows through the ground, the storage heat increases the water temperature and heat the PV panel when circulating through the backside panel. The heat storage capacity of the ground is dependent on the thermal properties of the soil [7]. In this study, dry soil with thermal conductivity of 0.2 W/m 2 K was considered.…”

Section: Operational Principlesmentioning

confidence: 99%

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Analysis of Ground Thermal Control Systems for Solar Photovoltaic Performance Enhancement

Reda

Spinnler

Al-Kayiem

et al. 2020

WIT Transactions on Ecology and the Environment

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Arid areas are characterized by high solar radiation, which is an advantage for the performance of photovoltaic (PV) panels. However, they are deteriorating by two setbacks from the harsh climate: shallow temperatures during the night, leading to condensation and overheating during the day, leading to reduced efficiency. The paper discusses and resolves the two setbacks in the performance by cooling the panel during the day and heating it during the night using a ground embedded heat exchanger. Experimental and numerical methods are adopted to carry out the investigation. For that, a numerical model was developed and subjected to a series of measurements. Two PV modules have been tested simultaneously; one is with thermal control system and the second without thermal control. A reduction in the PV surface temperature by around 8°C can be obtained during the daytime. The same system can rise the PV surface temperature by around 3°C more than the temperature at which condensation takes place.

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Section: Operational Principlesmentioning

confidence: 99%

“…A different investigation of front PV surface cooling was performed by using a spray water cooling technique. Results showed that the cell power increased due to the spraying of water [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Ground Thermal Control Systems for Solar Photovoltaic Performance Enhancement

Reda

Spinnler

Al-Kayiem

et al. 2020

WIT Transactions on Ecology and the Environment

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“…Bahaidarah et al [4] evaluated the performance of a PV/T module by backside cooling and reported yielding a temperature reduction of 20%, which resulted in an efficiency increase of the PV panel by 9%. Hongbing et al [5] investigated active cooling by attaching heat pipes beneath the PV panel, building up a PV-heat pipe (HP) combined system. They concluded that thermal efficiency decreased in the daytime; a turning point occurred in the afternoon and there was a minimum electrical efficiency in the daytime.…”

Section: Introductionmentioning

confidence: 99%

Analysis of solar photovoltaic panel integrated with ground heat exchanger for thermal mana gement

Al-Kayiem¹,

Reda²

2021

Int. J. EQ

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In spite of high solar radiation being an advantage for the performance of solar photovoltaic (PV) panels, the caused high surface temperature of the panel surface reduces their efficiency, as well as lifetime span due to cyclic thermal stresses. PV panels are deteriorating due to two setbacks from a harsh climate: shallow temperatures during the night leading to condensation and overheating during the day leading to reduced efficiency. The present paper discusses and resolves the two setbacks in the PV performance by cooling the panel during the day and heating the panel during the night using water circulation in a ground embedded heat exchanger. Experimental and numerical methods were used to carry out the investigation on the influence of the proposed technique on the PV performance. Following the experiments, a computational model has been developed to simulate the experimental set-up. Two PV modules have been tested simultaneously in outdoor environment; one is bare and the second is integrated with ground heat exchanger. Results revealed that the integrated heat exchanger has managed to reduce the PV surface temperature by around 8 o C during the daytime and rise the PV surface temperature by around 3 o C more than the due temperature, at which condensation takes place during the night time. The developed technique has proved to be highly efficient as a PV thermal control method.

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A hydronic closed-loop photovoltaic cooling system designed for hot and arid regions: Performance evaluation and degradation rate/lifetime analysis

Dirawi,

Wang,

et al. 2024

Applied Energy

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Experimental Study on the Energy Performance of PV-HP Water Heating System

Cited by 8 publications

References 8 publications

Analysis of Ground Thermal Control Systems for Solar Photovoltaic Performance Enhancement

Analysis of Ground Thermal Control Systems for Solar Photovoltaic Performance Enhancement

Analysis of solar photovoltaic panel integrated with ground heat exchanger for thermal mana gement

A hydronic closed-loop photovoltaic cooling system designed for hot and arid regions: Performance evaluation and degradation rate/lifetime analysis

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