Simulation and Model Validation of the Surface Cooling System for Improving the Power of a Photovoltaic Module

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Dong-Jun Kim ◽  
Dae Hyun Kim ◽  
Sujala Bhattarai ◽  
Jae-Heun Oh
Keyword(s):  
Crystalline Silicon ◽  
Cooling System ◽  
Model Performance ◽  
Water Circulation ◽  
Photovoltaic Module ◽  
Maximum Deviation ◽  
Power Module ◽  
Surface Cooling ◽  
Transient Model ◽  
Pv Module

One of the unique features of photovoltaic (PV) modules is the power drop that occurs as the silicon temperature increases due to the characteristics of the crystalline silicon used in a solar cell. To overcome this reduction in power, module surface cooling using water circulation was employed. The model performance was then conceptually evaluated and experimentally verified. A transient model was developed using energy balances and heat and mass transfer relationships from various other sources to simulate the surface cooling system. The measurements were in good agreement with the model predictions. The maximum deviation between the measured and predicted water and silicon temperature differed by less than 4 °C. The maximum power enhancement in response to the cooling was 11.6% when compared with a control module. The surface cooling system also washed the module surface via water circulation, which resulted in an additional power up of the PV module in response to removal of the particles that interfere with solar radiation from the surface of the PV module. Accordingly, the cooling system could reduce maintenance costs and prevent accidents associated with cleaning. In addition, the increase in cooling water temperature can serve as a heat source. The system developed here can be applied to existing photovoltaic power generation facilities without any difficulties as well.

Lifetime Estimation of a Photovoltaic Module Subjected to Corrosion Due to Damp Heat Testing

2012 ◽  
Vol 135 (2) ◽  
Author(s):  
R. Laronde ◽  
A. Charki ◽  
D. Bigaud
Keyword(s):  
Crystalline Silicon ◽  
Meteorological Data ◽  
Photovoltaic Module ◽  
Model Parameters ◽  
Solar Panels ◽  
Power Requirement ◽  
Pv Module ◽  
Accelerated Life ◽  
Mean Lifetime ◽  
Initial Power

In this paper, a methodology is presented for estimating the lifetime of a photovoltaic (PV) module. Designers guarantee an acceptable level of power (80% of the initial power) up to 25 yr for solar panels without having sufficient feedback to validate this lifetime. Accelerated life testing (ALT) can be carried out in order to determine the lifetime of the equipment. Severe conditions are used to accelerate the ageing of components and the reliability is then deduced in normal conditions, which are considered to be stochastic rather than constant. Environmental conditions at normal operations are simulated using IEC 61725 standard and meteorological data. The mean lifetime of a crystalline-silicon photovoltaic module that meets the minimum power requirement is estimated. The main results show the influence of lifetime distribution and Peck model parameters on the estimation of the lifetime of a photovoltaic module.

scholarly journals Analysis and Fabrication of an Active Cooling System for Reducing Photovoltaic Module Temperature

2017 ◽  
Vol 7 (5) ◽  
pp. 1980-1986
Author(s):  
A. Q. Jakhrani ◽  
A. R. Jatoi ◽  
S. H. Jakhrani
Keyword(s):  
Wind Speed ◽  
Flow Rate ◽  
Cooling System ◽  
Performance Comparison ◽  
Heat Extraction ◽  
Photovoltaic Module ◽  
Climatic Parameters ◽  
Photovoltaic Modules ◽  
Active Cooling ◽  
Pv Module

The purpose of this study is to fabricate and analyze an active cooling system for reducing photovoltaic (PV) module temperature and increasing its efficiency. An active cooling system was devised to cool the PV module. Two modules of same specifications were used for this study. One module was cooled, and other was left un-cooled for performance comparison. Solar radiations, wind speed, ambient temperature and temperatures at different points of the fabricated system were measured. The modules were mounted on a frame facing true south at the inclination of the latitude of the location. The measurements were taken during daytime with one hour intervals for two weeks. The temperatures at various points on cooled and un-cooled photovoltaic modules were noted using two different flow rates with 1 lit/min and 2 lit/min. It was discovered that the efficiency of PV module was enhanced from 6% to 7% during study period. The flow rate of 1lit/min was found more feasible for heat extraction as compared to the flow rate of 2lit/min. The wind speed was found to be more helpful for heat extraction from the modules as compared to other climatic parameters.

Efficiency Improvement of a Photovoltaic Module Using Front Surface Cooling Method in Summer and Winter Conditions

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
Himanshu Sainthiya ◽  
Narendra S. Beniwal ◽  
Navneet Garg
Keyword(s):  
Output Power ◽  
Cooling System ◽  
Front Surface ◽  
Weather Conditions ◽  
Photovoltaic Module ◽  
Surface Cooling ◽  
Cell Efficiency ◽  
Pumping System ◽  
Winter Conditions ◽  
Cooling Method

Photovoltaic (PV) cells exhibit long-term degradation, when its temperature exceeds a certain limit. On the other hand, decreasing the temperature results in lower PV cell efficiency. The aim of this paper is to demonstrate the improvements in the output power and efficiency of PV modules using a cooling system based on flowing water on the front surface. Front surface cooling method with the help of a water pumping system is one of the most promising methods for cooling the PV cells. With poly-crystalline PV cells, different water flow rates are experimented, and the output power and the efficiency are computed for different weather conditions. These experiments yield that the cell efficiency is improved by approximately 27.3% in winter conditions and 27.6% in summer conditions.

scholarly journals Performance Analysis of Photovoltaic Module with Different Passive Cooling Methods

2021 ◽  
Vol 945 (1) ◽  
pp. 012016
Author(s):  
Muhammad Arif bin Azahari ◽  
Chua Yaw Long ◽  
Koh Yit Yan
Keyword(s):  
Output Power ◽  
Cooling System ◽  
Operating Temperature ◽  
Passive Cooling ◽  
Photovoltaic Module ◽  
Back Side ◽  
Cooling Systems ◽  
Pv Module ◽  
Passive Cooling Systems ◽  
Cotton Wick

Abstract This paper analyses the difference in terms of performance of passive cooling systems for photovoltaic (PV) modules. The objective of this paper is to identify which passive cooling systems offers the best results in reducing the operating temperature and improving the generation of output power. The performance of photovoltaic (PV) module will gradually decrease as the operating temperature increases. The energy from the sun’s photons are not enough to knock out the electrons from the atom to generate more electricity. That being the case, two passive cooling systems is developed which is the cotton wick structures with water and aluminium fins were attached to the back side of the photovoltaic (PV) module. The cotton wick structures with water utilises the capillary action of the water to extract excess heat from the module while the aluminium fins act as a heat sink that can remove heat from module to the adjacent air. Results showed that the cooling systems managed to enhance the output power by an average of 3.94% for the module with cotton wick structures with water while an average of 2.67% increment for the module under aluminium fin mounted as the cooling system.

scholarly journals Engineering Concept of Energy Storage Systems Based on New Type of Silicon Photovoltaic Module and Lithium Ion Batteries

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3701
Author(s):  
Stanisław Maleczek ◽  
Kazimierz Drabczyk ◽  
Krzysztof Artur Bogdanowicz ◽  
Agnieszka Iwan
Keyword(s):  
Energy Storage ◽  
Lithium Ion Battery ◽  
Crystalline Silicon ◽  
Storage Systems ◽  
Lithium Ion ◽  
Photovoltaic Module ◽  
Energy Storage Systems ◽  
Efficient System ◽  
Pv Module ◽  
New Type

In recent years, a great importance has been given to hybrid systems of energy generators and energy storages. This article presents the results of our research aimed at checking the possibility of connecting a photovoltaic (PV) module and a lithium-ion battery (LIB), using a simplified control module towards a cheap and efficient system. The photovoltaic modules based on crystalline silicon solar cells, tempered glass as the front layer and ethylene-vinyl acetate (EVA) copolymer as encapsulation material are the most popular type in the industry. The disadvantage of such module type is the high weight of about 15 kg/m2. The weight of PV module used in the presented energy storage system is twice as small. This new type of PV module is based on treated poly(methyl methacrylate) (PMMA) as back sheet; high transparent foil as front sheet. Changing glass layer to PMMA requires additional modification of the lamination process parameters and EVA polymer type. For this reason, an EVA polymer with reduced crosslinking temperature was used in most cases; the voltage obtained from solar panels is significantly different from the one required by battery system. Hence, voltage converters (step-up or step-down) are needed. The use of a voltage stabilizing converter (which is a kind of electrical buffer) between the solar cell and lithium-ion battery can in some cases replace the battery overcharge protection system. However, an indispensable element is the system protecting the battery from excessive discharge. The voltage converter permits direct connection between the electricity storage and power supply, which current-voltage parameters do not match. The converter’s task is to change the value of current and voltage in a way that meets the requirements of the powered receiver, minimizing power losses, increasing the whole system efficiency. Photovoltaic parameters of the energy storage systems were examined in laboratory and real conditions.

scholarly journals Efficient Photovoltaic Module Intergrated with Automatic Cooling System using Arduino

2019 ◽  
Vol 8 (12) ◽  
pp. 5521-5526
Keyword(s):  
Cooling System ◽  
Operating Temperature ◽  
Process Analysis ◽  
Water System ◽  
Heat Transfer Process ◽  
Integrated System ◽  
Photovoltaic Module ◽  
Solar Pv ◽  
Pv System ◽  
Pv Module

Solar photovoltaic-thermal (PVT) is an integrated system that produces both electrical and thermal energy simultaneously consist of PV module with heat extracting media for example water or air. The performance of the photovoltaic (PV) module depends upon the operating temperature of the PV module. The problem of non-uniform cooling of PV module can be solved by controlling the operating temperature of PV module systematically therefore, an automatic cooling system using Arduino integrated with PV module has been proposed. A theoretical model in term of heat transfer process analysis and simulation was developed to predict overall thermal-electrical conversion performances of Photovoltaic-Thermal (PVT) water system. The experimental validation of the used thermal and electrical model has been carried out by measured data. The result shows there is a good agreement between experimental and simulated results. This paper presents the electrical and thermal performance evaluation of Photovoltaic Module Integrated with Automatic Cooling System Using Arduino and comparing its performance with conventional solar PV system.

Development of a Cheap and Simple Sensor-Based Polar Tracking System

2007 ◽  
Author(s):  
Ulises Castro ◽  
Nicola´s Vela´zquez ◽  
Mario Mora ◽  
Iva´n O. Herna´ndez ◽  
Jesu´s A. Cantu´
Keyword(s):  
Cooling System ◽  
Tracking System ◽  
Electric Energy ◽  
Photovoltaic Module ◽  
Radiation Measurement ◽  
Water Pump ◽  
Pv Module ◽  
Evaporative Cooling System ◽  
Solar Thermal Cooling ◽  
Thermal Cooling

The present work describes the design and construction of a Sensor-Based Polar Tracking System. It was implemented to drive a Photovoltaic module with four panels parallel connected, but it can be used to work with any concentrator with this type of tracking. This system looks for the most incidence radiation region, increasing the amount of collected energy, and therefore increasing the amount of electric energy produced. To control the motion of the electromechanical mounting, a very simple and economic circuit has been developed. Whole system has been tested in different applications like: solar radiation measurement, supplying the energy to a water pump for a Solar Thermal cooling and also to an evaporative cooling system. Experimental results show an increase of the collected energy up to 29% compared with a fixed PV module.

scholarly journals Proposed Models to Improve Predicting the Operating Temperature of Different Photovoltaic Module Technologies under Various Climatic Conditions

2021 ◽  
Vol 11 (15) ◽  
pp. 7064
Author(s):  
Dang Phuc Nguyen Nguyen ◽  
Kristiaan Neyts ◽  
Johan Lauwaert
Keyword(s):  
Wind Speed ◽  
Crystalline Silicon ◽  
Operating Temperature ◽  
Thermal Inertia ◽  
Climatic Conditions ◽  
Solar Irradiation ◽  
Photovoltaic Module ◽  
Silicon Thin Film ◽  
Pv Module ◽  
Pv Modules

The operating temperature is an essential parameter determining the performance of a photovoltaic (PV) module. Moreover, the estimation of the temperature in the absence of measurements is very complex, especially for outdoor conditions. Fortunately, several models with and without wind speed have been proposed to predict the outdoor operating temperature of a PV module. However, a problem for these models is that their accuracy decreases when the sampling interval is smaller due to the thermal inertia of the PV modules. In this paper, two models, one with wind speed and the other without wind speed, are proposed to improve the precision of estimating the operating temperature of outdoor PV modules. The innovative aspect of this study is two novel thermal models that consider the variation of solar irradiation over time and the thermal inertia of the PV module. The calculation is applied to different types of PV modules, including crystalline silicon, thin film as well as tandem technology at different locations. The models are compared to models that are described in the literature. The results obtained in different time steps show that our proposed models achieve better performance and can be applied to different PV technologies.

Performansi aktual modul photovoltaik dengan pengarah matahari

2018 ◽  
Vol 12 (2) ◽  
pp. 98 ◽  
Author(s):  
Jalaluddin . ◽  
Baharuddin Mire
Keyword(s):  
Solar Radiation ◽  
Local Time ◽  
Performance Characteristic ◽  
Electrical Energy ◽  
Photovoltaic Module ◽  
Experiment Data ◽  
Actual Performance ◽  
Pv Module ◽  
Solar Tracking ◽  
Pv Modules

Actual performance of photovoltaic module with solar tracking is presented. Solar radiation can be converted into electrical energy using photovoltaic (PV) modules. Performance of polycristalline silicon PV modules with and without solar tracking are investigated experimentally. The PV module with dimension 698 x 518 x 25 mm has maximum power and voltage is 45 Watt and 18 Volt respectively. Based on the experiment data, it is concluded that the performance of PV module with solar tracking increases in the morning and afternoon compared with that of fixed PV module. It increases about 18 % in the morning from 10:00 to 12:00 and in the afternoon from 13:30 to 14:00 (local time). This study also shows the daily performance characteristic of the two PV modules. Using PV module with solar tracking provides a better performance than fixed PV module. 

Sign in / Sign up

Export Citation Format

Share Document