Parabola Dish and Cassegrain Concentrators to Improve Solar Cell Conversion Efficiency

Ali.H AL-Hamdani; Batool.D. Blawa; S.K AL-Ani

doi:10.21123/bsj.2011.8.2.571-576

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Publication Date

Sun Jun 12 2011

Journal Name

Baghdad Science Journal

Volume

8

Issue Number

2

DOI

10.21123/bsj.2011.8.2.571-576

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Parabola Dish and Cassegrain Concentrators to Improve Solar Cell Conversion Efficiency

Solar energy

Luminescent

Fresnel and Hybrid concentrators.

Ali.H AL-Hamdani

Batool.D. Blawa

S.K AL-Ani

...Show More Authors

New designs of solar using ray tracing program, have been presented for improved the performance and the out put power of the silicon solar cell, as well as reducing the cost of system working by solar energy. Two dimensional solar concentrator (Fresnel lenses) and three dimensional concentrators (parabola dish and cassegrain) were used as concentrator for photovoltaic applications (CPV). The results show that the performance efficiency and out power for crystalline silicon solar cells are improved.

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Publication Date

Sat Jan 01 2022

Journal Name

Aip Conference Proceedings

Artificial neural network model for predicting the desulfurization efficiency of Al-Ahdab crude oil

Saja Mohsen

Noor Mohsen

Thaer

Neran K.

Ali M.

Noor Dh.

Haneen Dh.

Mustafa

...Show More Authors

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(13)

(12)

Publication Date

Mon Apr 06 2020

Journal Name

August

INFLUENCE OF SOME FACTOR ON SOMATIC EMBRYOS INDUCTION AND GERMINATION OF DATE PALM CV BARHI BY USING CELL SUSPENSION CULTURE TECHNIQUE

This study was done to examine different concentrations of mercuric chloride (Hgcl2) for Explants sterilization and different concentration of NAA) mg/L with 2iP for their effect on initiation primary callus and subsequent embryogenesis in Phoenix dactyliferae cultivar Barhi. Leaf primordial and shoot tips were excised from 2-3 years old offshoot. The result showed that contamination percentage decreased with an increase in concentration of Hgcl2 for two explants where in the control (0.0)% gave highest value 75% and 62.5% of contamination for leaf primordial and shoot tip respectively while the addition (0.1)% gave a significant decrease 37.5 and 0% for explants respectively. The Explants were inoculated onto Murashiege and Skoog

1962 (MS) medium supplemented with 2iP 3mg/L and containing 0

25

50 or 100 mg/L of NAA

the addition (50) mg/L of NAA gave highest value 68.8% in percentage of callus initiation with significant difference from addition 0% gave lowest value (18.8)%

as well Explants of shoot tip gave significant difference was 53.1% while leaf primordial gave 28.1%

Primary callus was transferred to fresh MS medium containing (0

5

10 and 20) mg/L of NAA with 3mg/L 2iP

Results were recorded after 12 weeks. A highest value of embryonic callus induction percentage or fresh weight and dry weight 87.5% or 1.56g and 0.47g for the character respectively for the treat 20 mg/L while control treatment 0.0 gave the lowest value 12.5% or 0.37g and 0.14g for same character respectively. Inoculated 1g fresh biomass into a 250 ml Erlenmeyer flask containing 50 ml MS liquid medium supplemented with NAA 20mg/L and agitated at 150 rpm by shaker to making suspension culture the measurements of packed cell volume ( pcv) or fresh and dry weight taken weekly for 12 weeks

maximum values were reached in the eighth week of PCV and fresh weight but the dry weight reached to highest value in seventh week

then the curve began to decline gradually until it reached stability in the last two weeks. The cell suspension was Diluted to different initial cell density of 100

500

10000

50000 and 100000 cells /ml with hemocytometer. The initial cell number of (10000) cells gave significant different of plating efficiency PE (11.6)% while (100) cells gave lowest value 1.8% of PE.

Ali A.

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Publication Date

Sun Aug 03 2025

Journal Name

Journal Of Molecular Structure

Synergistic design of carbazole-bearing (D–π)₂-D–π–A architectures for dye-sensitized solar cells: Experimental and theoretical evaluations

Nawar Jamal

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Publication Date

Thu Mar 01 2018

Journal Name

Spectrochimica Acta Part A: Molecular And Biomolecular Spectroscopy

Application of dyes extracted from Alternanthera dentata leaves and Musa acuminata bracts as natural sensitizers for dye-sensitized solar cells

Mahmoud

Norasikin A.

Abu Bakar

Abd. Amir H.

Abduljabbar

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(101)

(99)

Publication Date

Tue Aug 01 2017

Journal Name

International Journal Of Science And Research (ijsr)

Thermal Analysis of Double-Pass Solar Air Collector with Different Materials of Absorber Plate and Different Dimensions of Air Channels

Ali

Mustafa

...Show More Authors

Search Results at the International Journal of Science and Research (IJSR)

View Publication

Publication Date

Tue Nov 01 2022

Journal Name

Energy Reports

Thermal effectiveness of solar collector using Graphene nanostructures suspended in ethylene glycol–water mixtures

Ali Omran

Mohammed Suleman

Musaddak M. Abdul

Hamed A.

Khaled Mohamed

Miklas

Zaher Mundher

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(15)

Publication Date

Fri Nov 15 2024

Journal Name

Iraqi Journal Of Science

The Impact of Partial Solar Eclipse on the Observation of Neutral Hydrogen Emission Line

Uday E.

Hareth S.

Lana T.

Kamal M.

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The research involves examining the influence of partial solar eclipse on the strength of neutral hydrogen from the Sun. Baghdad University Radio Telescope (BURT) was used to monitor the partial solar eclipse on the 25th of October, 2022. Radio observations from the Sun were recorded from 11:30 AM to 03:36 PM. This means that the HI emission from the Sun was recorded before, during and after the event. It was noticed, that at the moment of maximum eclipse, ~ 46% of the Sun’s disk was covered by the Moon. For the purpose of this research, the solar radio wave intensity was monitored and the solar flux density was determined at different times, i.e. before, during and after the partial solar eclipse. The obtained results showed that

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(1)

Publication Date

Fri Mar 01 2019

Journal Name

Al-khwarizmi Engineering Journal

Basement Kind Effects on Air Temperature of a Solar Chimney in Baghdad - Iraq Weather

Miqdam Tariq

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A solar updraft tower power plant (solar tower) is a solar thermal power plant that utilizes a combination of solar

air collector and central updraft tube to generate an induced convective flow which drives pressure staged turbines to generate electricity.

This paper presents practical results of a prototype of a solar chimney with thermal mass, where the glass surface is replaced by transparence plastic cover. The study focused on chimney's basements kind effect on collected air temperatures. Three basements were used: concrete, black concrete and black pebbles basements. The study was conducted in Baghdad from August to November 2009.

The results show that the best chimney efficiency attaine

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Publication Date

Fri Dec 01 2023

Journal Name

Case Studies In Chemical And Environmental Engineering

Kinetic modeling of a solar photo-electro-Fenton process for treating petroleum refinery wastewater

Ghazi F.

Ibrahim

huda

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(11)

Publication Date

Sun Sep 03 2017

Journal Name

Baghdad Science Journal

Toxicity Reduction of Reactive Red Dye-238 Using Advanced Oxidation Process by Solar Energy

photocatalysis

reactive dye

zinc oxide

azo dye

Riyad

Abdul Hamed

Eman

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Decolorization of red azo dye (Cibacron Red FN-R) from synthetic wastewater has been investigated as a function of solar advanced oxidation process. The photocatalytic activity using ZnO as a photocatalysis has been estimated. Different parameters affected the removal efficiency, including pH of the solution, initial dye concentration and H2O2 concentration were evaluated to find out the optimum value of these parameters. The results proved that the optimal pH value was 8 and the most efficient H2O2 concentration was 100mg/L. Toxicity reduction percent for effluent solution was also monitored to assess the degradation process. This treatment method was able to strongly reduce the color and toxicity of reactive red dye-238 to about (99 an

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