Back surface cooling of photovoltaic panel - an experimental investigation

This paper presents the effect of the front surface water cooling on performance parameters (solar cell temperature, back surface temperature, outlet water temperature, electrical efficiency, overall efficiency, etc.) of photovoltaic/thermal (PV/T) module in both winter and summer seasons in Indian climatic conditions. A mathematical model of PV/T module considering energy balance equations has also been presented. A comparative analysis of performance parameters obtained analytically and experimentally has also been presented. A fair agreement has also been found between analytical and experimental results which is supported by correlation coefficient of approximately unity and root mean square error of 10–14%. By front surface water cooling, solar cell and back surface temperature of PV/T module have been found to decrease considerably which in turn resulted in enhanced electrical and overall efficiency of module in winter and summer seasons.

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V-Trough Concentrator with Back Surface Cooling for Rooftop Photovoltaic System

2016 Second International Conference on Computational Intelligence & Communication Technology (CICT) ◽

10.1109/cict.2016.76 ◽

2016 ◽

Author(s):

Srikanth Reddy ◽

Siva Naga Raju ◽

B. K. Panigrahi ◽

Sai Krishna ◽

Lokesh Kumar Panwar ◽

...

Keyword(s):

Photovoltaic System ◽

Back Surface ◽

Surface Cooling

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Thermal Modeling and Performance Analysis of a Hybrid Photovoltaic/Thermal System Under Combined Surface Water Cooling in Winter Season: An Experimental Approach

Journal of Energy Resources Technology ◽

10.1115/1.4045082 ◽

2019 ◽

Vol 142 (1) ◽

Cited By ~ 1

Author(s):

Himanshu Sainthiya ◽

Narendra Singh Beniwal

Keyword(s):

Thermal Modeling ◽

Winter Season ◽

Cold Climate ◽

Back Surface ◽

Surface Cooling ◽

Winter Condition ◽

Photovoltaic Thermal System ◽

Overall Efficiency ◽

And Performance ◽

T System

Abstract In this paper, thermal modeling of a hybrid photovoltaic/thermal (PV/T) system has been developed under combined (front and back) water surface cooling. An analytical expression has been derived for solar cell temperature (Tcs), back surface temperature (Tbs), and overall efficiency (ηOE) of the hybrid PV/T system for the winter condition. Statistical analysis has been performed in the cold climate of MNIT, Jaipur (India), for determining performance parameters of the hybrid PV/T system. An experimental validation has been carried out for the developed thermal model, and fair agreement between the numerical and experimental observations has been observed. We have also calculated the electrical (ηele), thermal (ηth), and overall efficiency (ηOE) as 18.83%, 43.8%, and 64.56%, respectively, and output power as 57.39 mW in the winter condition. We have also noticed that better performance is given by 1.5 LPM out of the four (1, 1.5, 2, and 2.5 LPM) flow rates.

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