scholarly journals Experimental investigations of spray flow rate and angle in enhancing the performance of PV panels by steady and pulsating water spray system

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Mojtaba Nateqi ◽  
Mehran Rajabi Zargarabadi ◽  
Roohollah Rafee
Keyword(s):  
Cooling System ◽  
Spray Cooling ◽  
Spray Angle ◽  
Experimental Investigations ◽  
Water Spray ◽  
Maximum Increase ◽  
Photovoltaic Panel ◽  
Electrical Efficiency ◽  
Spray System ◽  
Pv Panel

AbstractIn this study, a spray cooling system is experimentally investigated to increase the photovoltaic panel efficiency. Cooling of photovoltaic panels is one of the important parameters that affects the PV panel performance. In this experiment the effects of spray angle, nozzles to PV panel distance, number of nozzles, and pulsating water spray on the PV panel performance are investigated. For this purpose, an experimental setup was made. The spray angles varied from 15° to 50°. The comparison between the spray angles shows that by decreasing the spray angle to 15° increases the electrical efficiency of PV panel to 19.78% and simultaneously the average PV panel temperature decreases from 64 (for non-cooled PV) to 24 °C. Also, nozzle to PV panel distance was changed from 10 to 50 cm. The best result was obtained for the lowest distance by 25.86% increase in power output. Study of various frequency also show that due to the surface evaporation and the intensity of the radiation, increasing the water spraying frequency can increase or decrease the electrical efficiency. The On–Off water spray system results show that the maximum increase in efficiency was obtained with frequency of 0.2 Hz which it was 16.84%. Water consumption also decreased to half.

scholarly journals Ground experimental investigations into an ejected spray cooling system for space closed-loop application

2016 ◽  
Vol 29 (3) ◽  
pp. 630-638 ◽  
Author(s):  
Hongsheng Zhang ◽  
Yunze Li ◽  
Shengnan Wang ◽  
Yang Liu ◽  
Mingliang Zhong
Keyword(s):  
Closed Loop ◽  
Cooling System ◽  
Spray Cooling ◽  
Experimental Investigations

Experimental Investigation and Numerical Simulation of Liquid Droplet Vaporization in a Compression System With Wet Compression

2004 ◽  
Author(s):  
Kunpeng Zhang ◽  
Song Zou ◽  
Weiming Pan ◽  
Fei Xue
Keyword(s):  
Cooling System ◽  
Liquid Droplet ◽  
Spray Cooling ◽  
Liquid Droplets ◽  
Compression Process ◽  
Compression System ◽  
Droplet Vaporization ◽  
Spray System ◽  
Good Accord ◽  
Wet Compression

Experimental study of spray cooling system with wet compression has been carried out on a small hot wind tunnel. A mathematical model is established for liquid droplets evaporization and a 3D calculation bound on the model have been carried out. The results are in good accord with the experimental data. This paper will be good reference for spray system design for a wet compression system. And the detail information of the experiment and numerical computation take us further understanding of the real wet compression process.

scholarly journals Performance Enhancement of Photovoltaic Panel Using Double-sides Water Glazing Chambers Cooling Technique

2019 ◽  
Vol 22 (1) ◽  
pp. 22-30
Author(s):  
Farag Mahel Mohammed ◽  
Jamal Abdul-Kareem Mohammed ◽  
Mustafa Abdul-Sayed Sanad
Keyword(s):  
Performance Enhancement ◽  
Cooling System ◽  
Operating Temperature ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Solar Pv ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Acrylic Glass ◽  
Cooling Technique

The efficiency of the solar PV panel decreases significantly as the PV panel’s operating temperature increases. There are many cooling techniques might be suitably deal with this problem to enhance the solar panel efficiency. The presented cooling technique used for solving the PV panel’s temperature elevation is an active close loop cooling system, accomplished using two water glazing chambers made from acrylic glass placed at the PV panel surfaces (rear and front). These champers are utilized for cooling down the PV cell’s temperature, as well as filtering the useful sunlight spectrum. The results show that the PV cell’s temperature reduction by 50.06% with using the cooling system, this leads to an average increase in the maximum output power and consequently electrical efficiency of the PV panel by about 12.69% and 14.2%, respectively.

scholarly journals Cooling on Photovoltaic Panel Using Forced Air Convection Induced by DC Fan

2016 ◽  
Vol 6 (2) ◽  
pp. 526 ◽  
Author(s):  
A.R. Amelia ◽  
Y.M. Irwan ◽  
M. Irwanto ◽  
W.Z. Leow ◽  
N. Gomesh ◽  
...  
Keyword(s):  
Cooling System ◽  
Weather Conditions ◽  
Energy Conversion Efficiency ◽  
Optimum Number ◽  
Back Side ◽  
Pv System ◽  
Photovoltaic Panel ◽  
Average Value ◽  
Pv Panel ◽  
Cooling Mechanism

<span>Photovoltaic (PV) panel is the heart of solar system generally has a low energy conversion efficiency available in the market. PV panel temperature control is the main key to keeping the PV panel operate efficiently. This paper presented the great influenced of the cooling system in reduced PV panel temperature. A cooling system has been developed based on forced convection induced by DC fan as cooling mechanism. DC fan was attached at the back side of PV panel will extract the heat energy distributed and cool down the PV panel. The working operation of DC fan controlled by PIC18F4550 microcontroller which depending on the average value of PV panel temperature. Experiments were performed with and without cooling mechanism attached at the backside PV panel. The whole PV system was subsequently evaluated in outdoor weather conditions. As a result, it is concluded that there is an optimum number of DC fans required as cooling mechanism in producing efficient electrical output from a PV panel. The study clearly shows how cooling mechanism improves the performance of PV panel at the hot climatic weather. In short, the reduction of PV panel temperature is very important to keep its performance operated efficiently.</span>

scholarly journals The Effect of Staggered porous fins on the performance of Photovoltaic panel in Baghdad

2020 ◽  
Vol 26 (8) ◽  
pp. 1-13 ◽  
Author(s):  
Duaa Jassim Hasan ◽  
Ammar A. Farhan
Keyword(s):  
Metal Foam ◽  
Operating Temperature ◽  
Maximum Power ◽  
Efficiency Enhancement ◽  
Photovoltaic Panel ◽  
Electrical Efficiency ◽  
Pv Panel ◽  
Solar Intensity ◽  
Porous Fins

The performance of photovoltaic (PV) panel having staggered metal foam fins was examined experimentally in Baghdad, Iraq. Three staggered metal foam fin configurations attached to the backside of the PV panel were studied. The measured parameters were front and back surfaces temperature, open voltage and current circuits, maximum power, and PV efficiency. It was noted that the maximum electrical efficiency enhancement was 4.7% for staggered metal foam fins (case III) than the reference PV panel. The operating temperature of the cell was increased when the value of solar intensity was high. Thereby, the electrical efficiency was decreased. It was found that the metal foam fins decreased the PV temperature by 2-3 oC.

Numerical Simulation of Accident Spray Cooling System in FGD System Inlet

2014 ◽  
Vol 703 ◽  
pp. 237-240
Author(s):  
Dian Xun Li ◽  
Shu Sheng Zhang
Keyword(s):  
Numerical Simulation ◽  
High Temperature ◽  
Power Plant ◽  
Flue Gas ◽  
Cooling System ◽  
Spray Cooling ◽  
Sprinkler System ◽  
System Model ◽  
Water Spray

By accident of a power plant desulfurization CFD Research sprinkler system model to simulate the process of considering the two-way coupling between the droplet atomization, evaporation, with the main flue gas stream. The results showed that x = 3300 sectional arrangement 40 nozzles, high temperature flue gas through a water spray after 10.8m reach x = 14100 section of the temperature has dropped to 358K, before entering the GGH down to 345K, meet an accident situation spray cooling requirements.

scholarly journals Numerical Analysis of Heat and Mass Transfer from Drops in Intake Water-Spray Cooling System

2020 ◽  
Vol 2020 (0) ◽  
pp. J05109
Author(s):  
Kazuyasu SUGIYAMA ◽  
Takahiro MIYAOKA ◽  
Tsuneaki ISHIMA ◽  
Koichi YONEZAWA ◽  
Katsuhiko SUGITA ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Numerical Analysis ◽  
Heat And Mass Transfer ◽  
Cooling System ◽  
Spray Cooling ◽  
Water Spray ◽  
Intake Water ◽  
Water Spray Cooling
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