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Register a new userAlgorithm of modeling the global solar radiation
خوارزمية تمثيل الإشعاع الشمسي العالمي
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رحاب قاروط( باحث )
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تعتبر مسألة نمذجة الإشعاع الشمسي من المسائل الهامة و المساعدة في إنجاز أبحاث الطاقة الشمسية. لقد اهتم الباحثون بهذا الموضوع و قد وضعوا عدداً من النماذج الرياضية لتمثيل الإشعاع الشمسي. في هذا البحث تم دراسة أحد هذه النماذج (cloudiness degree model) ثم وضع خوارزمية له، و بناءً عليها كتابة برنامج باستخدام بيئة ماتلاب، ثم مقارنة هذه النتائج مع قيم حقيقية للإشعاع الشمسي أخذت من موقع في الجمهورية العربية السورية.
Modeling solar radiation consider one of important and helpful matter in researches in generation an electric power from solar cells. Researchers interested in this subject and put number of mathematical models to modeling solar radiation. In this paper we will study one of this models (cloudiness degree model), then put algorithm for it, and based on it writing program using mathlab, then comparing this results with real value taken from position in Syrian Arabic.
References used
Ridha Fethi Mechlouch and Ammar Ben Brahim. A Global solar radiation Model for the design of solar energy systems. Asian Network for Scientific Information 2008
Serm Janjai,korntip Toshing. A model for the Estimation of Global Solar Radiation from sunshine duration for Thailand. Silpakorn University 2005
B.E,Psiloglou , H.D.kambezidis. Performanceof the meteorogical radiation model during the solar eclipse of 29 March 2006
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This research includes a detailed study of the daily and monthly
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study shows that intensity increases to max
imum values in summer
1100w / m2, and drops to lesser values in winter 600 w / m2. The
difference between the measured values in summer and winter is
due to: a change in the inclination of the sun, and implicitly solar
azimuth z. This angle is at its greatest in winter and the optical
path is at the maximum. Thus, the processes of scattering and
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and the optical path is at the minimum. Thus, the absorption and
scattering of solar radiation are at the minimum.
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2
2
2
1
2
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