کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
300010 512465 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solar flux distribution on central receivers: A projection method from analytic function
ترجمه فارسی عنوان
توزیع شار خورشیدی در گیرنده های مرکزی: یک روش پیش بینی از عملکرد تحلیلی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• Accurate and fast optical performance tool based on a 4-step methodology.
• Flux distribution projected from image plane onto receiver panels.
• Spot distortion validated against measurements and Monte Carlo simulations.
• Flux map from a field of heliostats, considering shading and blocking losses.
• Application to multi-aiming strategies.

This paper presents a methodology to project the flux distribution from the image plane into the panels of any central receiver in Solar Power Tower plants. Since analytic functions derived from the convolution approach are conveniently defined on the image plane, its oblique projection solves the distorted spot found in actual receivers. Because of its accuracy describing the flux distribution due to rectangular focusing heliostats, we make use of the analytic function on the image plane by Collado et al. (1986). Based on the projection method, we have developed a computer code successfully confronted against PSA measurements and SolTrace software, either for flat plate or multi-panel cylindrical receivers. The validated model overcomes the computation time limitation associated to Monte Carlo technique, with a similar accuracy and even higher level of resolution. For each heliostat in a field, the spillage is computed besides the rest of optical losses; parallel projection is used for shading and blocking. The resulting optical performance tool generates the flux map caused by a whole field of heliostats. A multi-aiming strategy is investigated on the basis of the radius of the reflected beams, estimated from error cone angles.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 74, February 2015, Pages 576–587
نویسندگان
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