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 rese...

Ngày tải lên: 05/09/2013, 14:59

... 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...

Ngày tải lên: 05/09/2013, 16:10

... 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...

Ngày tải lên: 05/09/2013, 16:11

... Parameter Estimation of Dynamic Systems Youdong Lin and Mark A. Stadtherr Department of Chemical and Biomolecular Engineering University of Notre Dame Notre Dame, IN 46556 AIChE 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 d...

Ngày tải lên: 12/01/2014, 22:03

... Parameter Estimation of Dynamic Systems Youdong Lin and Mark A. Stadtherr Department of Chemical and Biomolecular Engineering University of Notre Dame Notre Dame, IN 46556 AIChE 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 d...

Ngày tải lên: 12/01/2014, 22:16

Ngày tải lên: 22/03/2013, 15:01

... 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...

Ngày tải lên: 05/09/2013, 09:38

... 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 Inter...

Ngày tải lên: 05/09/2013, 14:59

... 110042, India. 2 Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi 110025, India. 3 Mechanical 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...

Ngày tải lên: 05/09/2013, 15:28

... 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...

Ngày tải lên: 05/09/2013, 16:10