Estimation of clear sky hourly global solar radiation in Iraq
Estimation of clear sky hourly global solar radiation in Iraq
... estimating hourly solar radiation on horizontal and inclined surfaces on the basis of daily solar radiation. The aim of this research is to use a simple model to estimate hourly global solar radiation ... Keywords: Hourly solar radiation; Clear sky; Measurements; Iraqi locations. 1. Introduction Solar radiation data are important tools for many areas of research and applications in various engineering ... rights reserved. Estimation of clear sky hourly global solar radiation in Iraq Kais J. Al-Jumaily, Munya F. Al-Zuhairi, Zahraa S. Mahdi Department of Atmospheric Sciences, College of Science, Al-Mustansiriyah...
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Evaluation of Meteosat-8 measurements using daily global solar radiation for two stations in Iraq
... Atmospheric radiation, Iraq, Solar radiation, Meteorology, Meteosat. 1. Introduction Solar energy is one of the fields in the front line of research in renewable energy resources. Developments in the ... summery of Heliosat-2 can be explain by the following steps; recording the ground albedo maps for each month, computing the cloud index, calculating the clear sky index, and finally estimating the ... needs in the future. Daily solar radiation reaching earth surface is very important for different applications of solar energy including assessment for heating and electricity generation, solar...
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An overview of global solar radiation measurements in Ghardaïa area, south Algeria
... Conclusion In this study, global solar radiation and temperature data were measured to get a better view of the solar energy potential in Ghardaïa area. The total solar radiation of Ghardaïa ... 29 and 27 July. Solar radiation in Ghardaïa area is promising; the higher values of global radiation energy recorded in summer season were 28 (MJ/m 2 /day) and lower ones during winter were 14 ... diffuse solar radiation on tilted surface in Lucknow, India. They used the isotropic and anisotropic model, and they proposed the last one for estimation the diffuse solar radiation on inclined...
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22 global optimization for parameter estimation of dynamic systems lin chinese 2005
... Parameter Estimation of Dynamic SystemsYoudong Lin and Mark A. StadtherrDepartment of Chemical and Biomolecular EngineeringUniversity of Notre DameNotre Dame, IN 46556AIChE Annual Meeting, Cincinnati, ... Models - Range Bounding• Exact range bounding of the interval polynomials – NP hard• Direct evaluation of the interval polynomials – inefficient• Focus on bounding the dominant part (1st and ... constraint propagation procedure is used to reduce theincompatible parameter domain• This approach can be combined with the interval-Newton method (Lin andStadtherr, 2005)– True global optimum instead...
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Global optimization for parameter estimation of dynamic systems lin chinese 2005
... Parameter Estimation of Dynamic SystemsYoudong Lin and Mark A. StadtherrDepartment of Chemical and Biomolecular EngineeringUniversity of Notre DameNotre Dame, IN 46556AIChE Annual Meeting, Cincinnati, ... Models - Range Bounding• Exact range bounding of the interval polynomials – NP hard• Direct evaluation of the interval polynomials – inefficient• Focus on bounding the dominant part (1st and ... constraint propagation procedure is used to reduce theincompatible parameter domain• This approach can be combined with the interval-Newton method (Lin andStadtherr, 2005)– True global optimum instead...
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Estimation of river discharge loadings of PAHs in a suburban river in Hiroshima Prefecture, Japan
... estimating runoff ratio of each measured precipitation event. Specific discharge is defined as the ratio of runoff loadings to the area of a river basin, and runoff ratio is defined as the ratio of ... suggesting that PAHs were not included mainly in soil particles running into rivers on rainy days. Using flow rate of water and change in PAH concentration with time, yearly PAHs loadings were ... study obtained 66 µg m-2 year-1 of PAHs loading in the Kurose River, and loading on rainy days and that on non-rainy days was clarified to be in the same order. The yearly PAHs loadings were...
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Optimum sizing of steam turbines for concentrated solar power plants
... several rows of mirrors. This can lead to the increased effect of shading of incoming solar radiation and blocking of reflected solar radiation by adjacent reflectors. The use of Compact Linear Fresnel ... 12 Figure 2. Principle of operation of solar tower system Figure 3. Principle of operation of linear Fresnel reflector solar system International Journal of Energy and Environment ... that the inlet steam flow into the turbine, at which maximum efficiency is obtained, increases linearly with the increase of the capacity of the plant. Particularly, for the case of condensing steam...
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Life cycle assessment of 50 kWp grid connected solar photovoltaic (SPV) system in India
... 110042, India. 2Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi 110025, India. 3Mechanical Engineering Department, National Institute of Technology, Hamirpur 177005, India. ... 5. Estimation of environmental indicators, i.e. EPBT and GHG emissions. 4. Description of system There are growing trends in setting up grid interactive power plants worldwide. In grid interactive ... equipment includes junction boxes, panel assembly, Alternating (AC) inverter etc. In solar PV systems the material inflow is involved mainly in the construction phase. All the manufacturing, assembly,...
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Estimation of luminous efficacy of daylight and illuminance for composite climate
... illumination. The interior illuminance model to determine inside illuminance of the skylight building was found in good agreement with experimental results of skylight building at working level of interest ... certain amount of direct component. The information of percentage of working period in which a given illuminance is exceeded is valuable in designing the building for specific interior illumination. ... proposed model estimation of interior illuminance can be used for estimation of interior illuminance based on the experimental results conducted in the existing building in New Delhi (India). Figure...
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