Performance investigation of photovoltaic modules by back surface water cooling

The temperature of the photovoltaic module has an adverse effect on the performance of photovoltaic modules. The photovoltaic module converts a small portion of energy from solar radiations into electricity while the remaining energy wastes in the form of heat. In this study, water cooled photovoltaic/thermal system was analyzed to enhance the efficiency by absorbing the heat generated by the photovoltaic modules and allowing the photovoltaic module to work at comparatively low temperature. For this system, four photovoltaic modules of two different types were used. To investigate the cooling effect, two modules were modified by making ducts at their back surface having inlet and outlet manifolds for water-flow. The measurements were taken with cooling and without cooling of photovoltaic modules. The temperature was measured at inlet, outlet, and at different points at the back of photovoltaic modules. It was found that there was a linear trend between the module efficiency and temperature. The average module temperature of c-Si and p-Si modules without cooling was 13.6% and 7.2% lower, respectively, than the same modules without cooling. As a result of temperature drop, the average module electrical efficiency of c-Si and p-Si was 13% and 6.2% higher, respectively, compared to the modules without cooling. Flowing water also gains useful heat from photovoltaic module so the resultant overall energy of the system was much higher.

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Effect of dust deposition on the performance of photovoltaic modules in Taxila, Pakistan

Thermal Science ◽

10.2298/tsci140515046a ◽

2017 ◽

Vol 21 (2) ◽

pp. 915-923 ◽

Cited By ~ 13

Author(s):

Hafiz Ali ◽

Muhammad Zafar ◽

Muhammad Bashir ◽

Muhammad Nasir ◽

Muzaffar Ali ◽

...

Keyword(s):

Output Power ◽

Photovoltaic Module ◽

Strong Impact ◽

Dust Deposition ◽

Average Output ◽

Photovoltaic Modules ◽

Time Period ◽

Different Types ◽

The Difference ◽

Module Efficiency

The air borne dust deposited on the surface of photovoltaic module influence the transmittance of solar radiations from the photovoltaic modules glazing surface. This experimental work aimed to investigate the effect of dust deposited on the surface of two different types of photovoltaic modules (monocrystalline silicon and polycrystalline silicon). Two modules of each type were used and one module from each pair was left exposed to natural atmosphere for three months of winter in Taxila, Pakistan. Systematic series of measurements were conducted for the time period of three months corresponding to the different dust densities. The difference between the output parameters of clean and dirty modules provided the information of percentage loss at different dust densities. The dust density deposited on the modules surface was 0.9867 mg/cm2 at the end of the study. The results showed that dust deposition has strong impact on the performance of photovoltaic modules. The monocrystalline and polycrystalline modules showed about 20% and 16% decrease of average output power, respectively, compared to the clean modules of same type. It was found that the reduction of module efficiency (?clean ? ?dirtv) in case of monocrystalline and polycrystalline module was 3.55% and 3.01%, respectively. Moreover the loss of output power and module efficiency in monocrystalline module was more compared to the polycrystalline module.

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Comparison of Performance Measurements of Photovoltaic Modules during Winter Months in Taxila, Pakistan

International Journal of Photoenergy ◽

10.1155/2014/898414 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 34

Author(s):

Muhammad Anser Bashir ◽

Hafiz Muhammad Ali ◽

Shahid Khalil ◽

Muzaffar Ali ◽

Aysha Maryam Siddiqui

Keyword(s):

Solar Irradiance ◽

Strong Dependence ◽

Performance Ratio ◽

Back Surface ◽

Photovoltaic Module ◽

Comparative Performance ◽

Solar Module ◽

Photovoltaic Modules ◽

And Performance ◽

Module Efficiency

This paper presents the comparative performance evaluation of three commercially available photovoltaic modules (monocrystalline, polycrystalline, and single junction amorphous silicon) in Taxila, Pakistan. The experimentation was carried out at outdoor conditions for winter months. Power output, module efficiency, and performance ratio were calculated for each module and the effect of module temperature and solar irradiance on these parameters was investigated. Module parameters showed strong dependence on the solar irradiance and module temperature. Monocrystalline and polycrystalline modules showed better performance in high irradiance condition whereas it decreased suddenly with decrease in irradiance. Amorphous solar module also showed good performance in low irradiance due to its better light absorbing characteristics and thus showed higher average performance ratio. Monocrystalline photovoltaic module showed higher monthly average module efficiency and was found to be more efficient at this site. Module efficiency and performance ratio showed a decreasing trend with increase of irradiance and photovoltaic module back surface temperature.

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Improving Photovoltaic Module Efficiency Using Back Side Water-Cooling Technique

2020 IEEE 23rd International Multitopic Conference (INMIC) ◽

10.1109/inmic50486.2020.9318093 ◽

2020 ◽

Author(s):

Uzair Nasir ◽

Saif-ur-Rehman ◽

Adeel Waqas ◽

Rizwan Majeed

Keyword(s):

Photovoltaic Module ◽

Back Side ◽

Water Cooling ◽

Module Efficiency ◽

Cooling Technique

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Improving Photovoltaic Module Efficiency Using Water Cooling

Heat Transfer Engineering ◽

10.1080/01457630802529214 ◽

2009 ◽

Vol 30 (6) ◽

pp. 499-505 ◽

Cited By ~ 128

Author(s):

Saad Odeh ◽

Masud Behnia

Keyword(s):

Photovoltaic Module ◽

Water Cooling ◽

Module Efficiency

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Performance evaluation of a PV (photovoltaic) module by back surface water cooling for hot climatic conditions

Energy ◽

10.1016/j.energy.2013.07.050 ◽

2013 ◽

Vol 59 ◽

pp. 445-453 ◽

Cited By ~ 200

Author(s):

H. Bahaidarah ◽

Abdul Subhan ◽

P. Gandhidasan ◽

S. Rehman

Keyword(s):

Performance Evaluation ◽

Surface Water ◽

Climatic Conditions ◽

Back Surface ◽

Photovoltaic Module ◽

Water Cooling

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TEMPERATURE AND IRRADIANCE BASED ANALYSIS THE SPECIFIC VARIATION OF PV MODULE

Jurnal Teknologi ◽

10.11113/jurnalteknologi.v83.16609 ◽

2021 ◽

Vol 83 (6) ◽

pp. 1-17

Author(s):

Mohsin Ali Koondhar ◽

Irfan Ali Channa ◽

Sadullah Chandio ◽

Muhammad Ismail Jamali ◽

Abdul Sami Channa ◽

...

Keyword(s):

Iterative Methods ◽

Standard Test ◽

Operating Conditions ◽

Back Surface ◽

Photovoltaic Module ◽

Solar Module ◽

Pv Module ◽

Test Conditions ◽

Specific Variation ◽

Module Efficiency

The effect of irradiance and increase of temperature on the back surface of the PV module would decrease the standardized efficiency of PV. To overcome this problem observed results of solar module (ORSM) and Newton Raphson’s (iterative) methods have been proposed in this research. This article compares ORSM and iterative methods of changing the specifications of a single diode model (SDM) extracted from a PV module beneath standard test conditions (STC) to calculate irradiance and various operating conditions. To make this comparison, the exact value of each diode parameter on the STC is essential. These are achieved by accepted algebraic values and iterative techniques. Newton Raphson’s technique has been proven to be the mainly precise method to find these specifications in STC. Therefore, these specifications are used to different techniques that change the parameters of an SDM with radiation and temperature. The MATLAB model is designed to assess the conducting of individual techniques by PVM. The results are compared with the measured data, and the accuracy of photovoltaic module efficiency has been achieved through different technologies at different temperature and insolation levels.

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RESULTS OF THE PERFORMANCE NUMERICAL SIMULATION OF A SOLAR CONCENTRATOR MODULE WITH A THERMAL-PHOTOVOLTAIC RECEIVER

Elektrotekhnologii i elektrooborudovanie v APK ◽

10.22314/2658-4859-2020-67-4-51-56 ◽

2020 ◽

Vol 4 (41) ◽

pp. 51-56

Author(s):

DMITRIY STREBKOV ◽

◽

NATAL’YA FILIPPCHENKOVA ◽

Keyword(s):

Renewable Energy Sources ◽

Photovoltaic Cells ◽

Calculated Data ◽

Electrical Performance ◽

Research Purpose ◽

Photovoltaic Module ◽

Solar Concentrator ◽

Ansys Fluent ◽

Photovoltaic Modules ◽

Agroindustrial Complex

In the field of energy supply to agro-industrial facilities, there is an increasing interest in the development of structures and engineering systems using renewable energy sources, including solar concentrator thermal and photovoltaic modules that combine photovoltaic modules and solar collectors in one structure. The use of the technology of concentrator heat and photovoltaic modules makes it possible to increase the electrical performance of solar cells by cooling them during operation, and significantly reduces the need for centralized electricity and heat supply to enterprises of the agroindustrial complex. (Research purpose) The research purpose is in numerical modeling of thermal processes occurring in a solar concentrator heat-photovoltaic module. (Materials and methods) Authors used analytical methods for mathematical modeling of a solar concentrator heat and photovoltaic module. Authors implemented a mathematical model of a solar concentrator heat and photovoltaic module in the ANSYS Fluent computer program. The distribution contours of temperature and pressure of the coolant in the module channel were obtained for different values of the coolant flow rate at the inlet. The verification of the developed model of the module on the basis of data obtained in an analytical way has been performed. (Results and discussion) The results of comparing the calculated data with the results of computer modeling show a high convergence of the information obtained with the use of a computer model, the relative error is within acceptable limits. (Conclusions) The developed design of the solar concentrator heat and photovoltaic module provides effective cooling of photovoltaic cells (the temperature of photovoltaic cells is in the operating range) with a module service life of at least twenty-five years. The use of a louvered heliostat in the developed design of a solar concentrator heat and photovoltaic module can double the performance of the concentrator.

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