Figure 1 - uploaded by Emad Jaleel Mahdi
Content may be subject to copyright.
![Geometrical concentration ratio [16].](profile/Emad-Mahdi-2/publication/350499453/figure/fig1/AS:1007115875385345@1617126544158/Figure-1-Geometrical-concentration-ratio-16.png)
Source publication
![Figure (1): Geometrical concentration ratio [16].](profile/Emad-Mahdi-2/publication/350499453/figure/fig1/AS:1007115875385345@1617126544158/Figure-1-Geometrical-concentration-ratio-16_Q320.jpg)
![Figure (2): Section of the CPC-PV system [8].](profile/Emad-Mahdi-2/publication/350499453/figure/fig2/AS:1007115875389441@1617126544186/Figure-2-Section-of-the-CPC-PV-system-8_Q320.jpg)
The aim of this work is to use the PV solar concentrator in order to lessen the amount of expensive solar cell by depressed cost optical materials. A compound parabolic concentrator (CPC) with two opposite paraboloid mirrors has been fabricated. Each mirror connected to two steel bars from both sides and these bars fixed on aluminum base. The two m...
Contexts in source publication
Context 1
... Photoelectric solar concentrator's main goal is to reduce the amount of costly solar cells by using low-cost optical material. CPV is commonly classified into three types according to the concentration ratio; low photovoltaic concentration (LCPV), medium photovoltaic (MCPV), and high photovoltaic (HCPV) as shown in Fig. 1 [14]. Technologies offered in medium and high concentration ratios can produce higher output power which depends extremely on a solar energy tracking system with the costliest of application. LCPV have preferable characteristics of half acceptance angle that can receive the solar radiation at taller hours without using tracking system, ...
Context 2
... change in the of the Concentrator aperture width leads to a change in the focal area formed. The system includes mirrors as a reflective material with a concentrator height of 43cm and a commercial polycrystalline solar cell with dimensions of 7 x 10 cm, all the system is tracking the movement of the sun on 3/4/2020. From Fig. 10a, it is seen that the smaller the Concentrator aperture width, the higher the value of the solar radiation intensity because of the smaller Concentrator aperture width leads to smaller the focal area and thus larger solar radiation intensity falling per unit area. The value of the solar radiation intensity reached to 2775 W/m 2 with a ...
Context 3
... smaller than the solar cell width cause to the delusion part of the solar cell and the other part exposed to the high solar radiation intensity, on the other hand the concentration ratio reaches optimum value when the formed focal area equal to the solar cell area. This explains the reason for the rise and fall of the concentration ratio in Fig. 10b. According to this explanation the best concentration ratio is 2.61 when the Concentrator aperture width 35cm that give 7cm focal width which equal to the solar cell. This section of the process enabled us to calculate the best width of the Concentrator opening by using only visible in the remaining parts of the work. ...
Context 4
... position is performed practically by using fixed CPV at a 25 o tilt angle facing south, the system consists of nickel plate reflector bending with a focal length of 0.3m, Concentrator height 42cm, concentrator aperture width 35cm, commercial multi-crystalline solar cell with dimensions of 7 * 10 cm. The experimental test is done on 29/08/2020. Fig. 11 shows the effect of the solar tracker on the concentration ratio of CPV for three different cases throughout the day, system tracking in two dimensions, system tracking in one dimension, and system fixed without tracking. It is observed that the maximum value of the concentration ratio for all tracking cases is obtained at solar noon ...
Citations
In this paper, a concentrating photovoltaic system (CPV) by using a compound parabolic concentrator and a monocrystalline solar module has been designed and studied theoretically under a concentration ratio of 3.16x. The performance the system is studied over the course of the day from 8:00 AM to 16:00 PM for 12 months under Iraq-Baghdad conditions. Current in a short circuit (I sc ), voltage in an open circuit (V oc ) as well as maximum power (P m ) are calculated with and without a concentrator under constant solar module temperature (25°C). The results indicated that the optimum value of output power can be obtained on June 21, which is about 246.9W for CPV. In the second part, the effect of solar cell temperature within a range of 25 °C−115 °C on its performance has been studied for the optimum day of the year, June 21st. The output power of the device may be viewed in CPV is 246.9 W in comparison to the flat PV module, which gives 83.44W under solar cell temperature of 25°C and decreases to 125.3W and 40W under cell temperature of 115°C for the CPV and flat module, respectively.
