scholarly journals Efficiency Improvement Based on Cooling Effect via Immersion Technique in a PV Solar Panel: Tropical and Cloudy Weather Setting

IJIREEICE ◽  
2016 ◽  
Vol 4 (10) ◽  
pp. 1-6
Author(s):  
Moh T S Y ◽  
Ting E M S
Keyword(s):  
Solar Panel ◽  
Cooling Effect ◽  
Efficiency Improvement ◽  
Cloudy Weather ◽  
Immersion Technique

scholarly journals Performance Test of Solar-Powered Ice Maker: Case Study in South Lampung

2018 ◽  
Vol 43 ◽  
pp. 01018
Author(s):  
Putri Wullandari ◽  
Arif Rahman Hakim ◽  
Widiarto Sarwono
Keyword(s):  
Performance Test ◽  
Power Input ◽  
Solar Panel ◽  
Maximum Power ◽  
Total Power ◽  
Cloudy Weather ◽  
Battery Capacity ◽  
Solar Powered ◽  
Ice Production ◽  
Sunlight Intensity

The performance test of solar powered ice maker is being held at the fish auction spot of Kramat, South Lampung for 6 hours. The spesification of ice maker are: having the production capacity of 105 – 120 kg/ day, producing flakes ice with 2 x 3 x 3 mm dimension. The spesification of solar panel are: having maximum power of 200 W, 1,32 m length, 0,992 m width, and 1,3094 m2 area. In this test, we used 9 solar panel with the total area of 11,7846 m2. During the performance test, the intensity of sunlight, battery voltage, battery capacity, power input from solar panel, battery discharge current, maximum power consumption of ice maker, and total ice production are being measured. The sunlight-intensity value (lumen / m2) and the power input of the solar panel (watts) was plotted into a graph. Once the graph is created then add the trendline and create the equation. In a sunny-yet-cloudy weather conditions (at 24-33°C temperature and 65-95% humidity) in South Lampung, the relationship between the sunlight intensity with the power input of the solar panel is linear with the equation y = 0,008x + 143.6. Where the maximum intensity of sunlight is 121600 lm / m2 with the maximum power input of the solar panel (9 x 200Wp) is 1253 W. Total ice production for 6 hours is 28.42 kg or 4.74 kg per hour. This production resulted from a 760 W ice maker with a starting current of 4.6 A with a total power of 3.94 kWh.

The influence of solar panel roof on urban thermal environment and cooling energy demand during a heat wave event in 2017

2020 ◽  
Author(s):  
Yongwei Wang ◽  
Fei Chen ◽  
Xiaolong Hao ◽  
Fan Wang
Keyword(s):  
Heat Transfer ◽  
Power Generation ◽  
Energy Consumption ◽  
Air Temperature ◽  
Energy Supply ◽  
Energy Demand ◽  
Thermal Environment ◽  
Clean Energy ◽  
Solar Panel ◽  
Cooling Effect

<p>With the rapid development of social economy, China's energy demand has been growing at an alarming rate. The annual cumulative power generation is about  6.8 trillion kilowatts hour in 2017, and 70% of them is provided by fossil fuel resources, so it is important to promote the use of renewable and clean energy, such as solar power generation technology. The advantages of using solar panel roof in urban areas include reduction of the need of land use in the crowed city and less dependence on fossil fuels. However, there is need to understand impacts of solar roof on local climate, on energy supply during heatwaves, and associated economic benefits in China. This study selected a heatwave event in Jiangsu province, China to simulate the impact of solar panel roof on local thermal environment and energy supply. During that time, the cooling energy consumption reached more than half of the total electricity consumption. A new heat transfer scheme of solar panel roof was introduced into WRF/BEP/BEM model, which include layers (glass protective panel, solar panel, bottom plate) and was divided into two types for heat transfer calculation: bracket and non-bracket. The results showed that the urban average 2-m daytime temperature decreased by 0.3℃ in non-bracket case which is better than that of bracket case, while its cooling effect on nighttime temperature was small. For the bracket case, its cooling effect on daytime and nighttime air temperature were equal (0.2<sup>o</sup>C). Both solar panel roofs can reduce indoor daytime air temperature with the maximum cooling effect around 11:00 local time for non-bracket roof and 14:00 for bracket roof. However, bracket roof increased nighttime indoor air temperature and air-conditioning energy consumption. Solar panel roofs also reduce daytime turbulent kinetic energy and constrain the development of boundary layer. Results also show that with solar photoelectric conversion efficiency being 0.14, the photovoltaic power generation can meet 84.1%, 61.3% and 35.9% of the cooling energy consumption for high-density, low-density residential areas and commercial areas, respectively, during this heatwave event.</p>

Mitigating the warming in urban areas: Experimental study of different roof materials in a subtropical monsoon climate

2020 ◽  
Author(s):  
Xing Chen ◽  
Sujong Jeong
Keyword(s):  
Surface Temperature ◽  
Urban Areas ◽  
Field Experiments ◽  
Solar Panel ◽  
Urban Atmosphere ◽  
Cooling Effect ◽  
Monsoon Climate ◽  
Urban Heat ◽  
Cooling Effects ◽  
Subtropical Monsoon Climate

<p>Different roof materials are deployed for mitigating the urban heat, which significantly affects<br>our life. However, the performance of specific roof materials could be influenced by the<br>background climate. To evaluate the effectiveness of roof materials on temperature reductions in<br>a subtropical monsoon climate region, this study performs field experiments using four different<br>roof materials (gray and white surfaces, solar panel, and grass surface) from December 2017 to<br>July 2018. The results show that the white surface reduced the average daily surface temperature<br>by 3.37 °C. This cooling effect increased with the increase in surface albedo and incoming solar<br>radiation. However, the average cooling effect of the grass surface was much lower (0.43 °C).<br>This is attributable to the low soil moisture, which was influenced by the monsoon, thereby<br>indicating that irrigation is required to improve the thermal performance of grass roofs even in<br>humid regions. The solar panel reduced the daily surface temperature by 0.59 °C but exerted<br>strong warming (7.36 °C) during midday and cooling effects (4.03 °C) during midnight because<br>of its low albedo, low emissivity, and low heat capacity. Our results suggest that, for the roof<br>treatments explored here, white roofs are more effective for mitigating urban heat in a<br>subtropical monsoon climate under the present climatic conditions and especially for drier<br>climates predicted for the future, while grass roofs are not a sustainable method as they require<br>irrigation to achieve a cooling effect and solar panels may heat the urban atmosphere.</p>

scholarly journals Solar Panel Performance Improvement using Heatsink Fan as the Cooling Effect

2019 ◽  
Vol 1167 ◽  
pp. 012031
Author(s):  
Efsilon K A Fatoni ◽  
Ahmad Taqwa ◽  
Rd Kusumanto
Keyword(s):  
Performance Improvement ◽  
Solar Panel ◽  
Cooling Effect

scholarly journals Cooling effect and heat index (HI) assessment on car cabin cooler powered by solar panel in parked car

2021 ◽  
Vol 28 ◽  
pp. 101386
Author(s):  
Muji Setiyo ◽  
Budi Waluyo ◽  
Noto Widodo ◽  
Muhammad Latifur Rochman ◽  
Suroto Munahar ◽  
...  
Keyword(s):  
Solar Panel ◽  
Cooling Effect ◽  
Heat Index

Incorporating and Analyzing Efficiency Improvement Method in Solar Panel

2019 ◽  
Vol 16 (5) ◽  
pp. 2210-2212
Author(s):  
M Gnanasekaran ◽  
P Ramasamy ◽  
P Booneshwaran ◽  
N Lokeshwaran ◽  
T Suresh
Keyword(s):  
Solar Panel ◽  
Efficiency Improvement ◽  
Improvement Method

scholarly journals A Fuzzy Logic Control Method for MPPT to Improve Solar System Efficiency

2019 ◽  
Vol 9 (1) ◽  
pp. 888-892
Keyword(s):  
Control Method ◽  
Block Diagram ◽  
Solar Panel ◽  
Control Technique ◽  
Primary Circuit ◽  
Maximum Output ◽  
Point Tracking ◽  
Logic Control ◽  
Cloudy Weather ◽  
Power Point

Solar energy is act clean as well as renewable source of energy. Hence the use of PV systems has used in many applications. Big-spread use has resulted in decreased solar panel production expenses. But the low effectiveness of a solar panel owing to variables such as solar insulation, clouds and shading impact continues one of the greatest issues. Due to variable concentrations of isolation, the panel output remains variable during cloudy weather. To increase the solar panel's efficiency, the maximum algorithm for power point tracking needed as it was discovered only a small percentage of the energy incident is transformed into electricity. DC-DC Converter (Boost Converter) design helps to increase the panel output, thereby improving effectiveness and output voltage using reasonable control technique. This article discusses the development of the fluctuating MPPT logic control to track the maximum output point and also to compensate for fluctuating power during cloudy weather. The suggested primary circuit block diagram. The simulation study is carried out and the proposed circuit is implemented by hardware. MATLAB Simulink is used for simulating the circuit.

Efficiency Improvement of PV-Inverters with SiC-DMOSFETs

2008 ◽  
Vol 600-603 ◽  
pp. 1231-1234 ◽  
Author(s):  
Bruno Burger ◽  
Dirk Kranzer ◽  
Olivier Stalter
Keyword(s):  
Solar Panel ◽  
Operating Voltage ◽  
Power Electronic ◽  
Efficiency Improvement ◽  
Power Electronic Converters ◽  
Switching Speed ◽  
Dc Power ◽  
High Switching Speed

The new MOSFET-generation with SiC-materials seems well suited for power electronic converters up to 1200 V operating-voltage, and particularly for grid-feeding PhotoVoltaic-inverters, which transfer the DC power of the solar panel to the AC grid. Their high switching speed and low on-resistance RDS(on) allow the use of higher switching frequencies, which could mainly reduce the costs and weight of the converters. This paper shows a comparison between IGBT and SiC DMOSFET devices and first measurements of some 1200 V / 10 A SiC-DMOSFET samples made by CREE®.

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