scholarly journals Estimating Roof Solar Energy Potential in the Downtown Area Using a GPU-Accelerated Solar Radiation Model and Airborne LiDAR Data

2015 ◽  
Vol 7 (12) ◽  
pp. 17212-17233 ◽  
Author(s):  
Yan Huang ◽  
Zuoqi Chen ◽  
Bin Wu ◽  
Liang Chen ◽  
Weiqing Mao ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Airborne Lidar ◽  
Lidar Data ◽  
Energy Potential ◽  
Radiation Model ◽  
Downtown Area ◽  
Solar Radiation Model ◽  
Airborne Lidar Data

Effects of Aspect Ratios on Average Daily Solar Energy Collection for Different Flat-Plate Collector Arrays in Winter Months

2013 ◽  
Vol 368-370 ◽  
pp. 1228-1231
Author(s):  
Fen E Hu ◽  
Sheng Xian Wei ◽  
Neng Bang Hou
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Aspect Ratio ◽  
Flat Plate ◽  
Solar Collector ◽  
Radiation Model ◽  
Aspect Ratios ◽  
Solar Radiation Model ◽  
Flat Plate Collector

A solar radiation model to determine solar energy collection on solar collector array with different aspect ratios has been developed. The relations between the aspect ratio and the average daily solar radiation collection on the collector array have been deeply studied. The results show that there is an optimum aspect ratio to maximize the solar energy collection on the collector arrays. The optimum aspect ratios of the 1000 m2 collector array for Haikou, Kunming, Lhasa and Beijing are 10/1, 1/3, 5/1 and 10/1.The optimum aspect ratios of 1000 m2, 500 m2, 200 m2 and 100 m2 collector arrays for Kunming are 1/3, 3/1, 7/1 and 1/5, respectively.

scholarly journals Effects of orientation and structure on solar radiation interception in Chinese solar greenhouse

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242002
Author(s):  
Demin Xu ◽  
Yiming Li ◽  
Yue Zhang ◽  
Hui Xu ◽  
Tianlai Li ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Structural Parameters ◽  
Limiting Factor ◽  
Radiation Model ◽  
Horizontal Projection ◽  
Radiation Interception ◽  
Ridge Height ◽  
Solar Greenhouse ◽  
Solar Radiation Model

In order to further improve the utilization of solar energy in Chinese Solar Greenhouse (CSG), this paper systematically studied the effects of orientation and structure on solar radiation interception in CSG. A solar radiation model has been developed based on the previous research, which taking solar motion law, meteorological data, and optical properties of materials into consideration. The established model was used to optimize the orientation and structure of CSG. The analysis of structure considered two major structural parameters, which are the ridge height and the horizontal projection of the rear roof. Moreover, the widely used Liao-Shen type Chinese solar greenhouse (CSG-LS) has been taken as the prototype in the present research, and the measured data of the typical clear day was used for the model validation. The results showed that the ridge height has a remarkable influence on the solar energy captured by CSG-LS. Compared with the optimization of a single factor, the comprehensive optimization of orientation and structure can increase the solar radiation interception of the rear wall by 3.95%. Considering the limiting factor of heat storage-release capacity and the shading effect on the greenhouse structure, the optimal lighting construction of the CSG-LS (with a span of 9.0 m) was specified as 7~9° from south to west of azimuth angle, 4.5~4.7 m ridge height, and 1.4~1.6 m horizontal projection of the rear roof at 42°N latitude. The proposed solar radiation model can provide scientific guidance for the CSG-LS construction in different areas.

Simulating and Mapping the Variations of Solar Radiation at the Lujiazui Region of Shanghai Using Airborne LiDAR Data

2012 ◽  
Vol 500 ◽  
pp. 511-516 ◽  
Author(s):  
Zhi Ming Hu ◽  
Jian Ping Wu ◽  
Bin Wu ◽  
Song Shu ◽  
Bai Lang Yu
Keyword(s):  
Solar Radiation ◽  
Three Dimensional ◽  
Temporal Variations ◽  
Airborne Lidar ◽  
Lidar Data ◽  
Total Solar Radiation ◽  
Solar Radiation Intensity ◽  
Flux Model ◽  
Spatio Temporal ◽  
Airborne Lidar Data

This study utilizes high resolution airborne LiDAR data and topographic solar radiation model to quantify the impacts of three-dimensional morphology on the spatio-temporal variations of solar radiation at the Lujiazui Region, Shanghai, China. Monthly direct and non-direct (diffuse and reflection) plus seasonal total solar radiation distributions are simulated and mapped by using a radiation flux model. The results show that the crowded buildings at the Lujiazui Region have severely changed the spatial pattern of solar radiation intensity and duration. The derived monthly and seasonal solar radiation maps would benefit the understanding of the impacts of urban 3D morphology on the environmental factors and be the scientific basic for the further research.

Modeling and Analysis of Solar Energy Collected by High Altitude Solar UAV’s Surface

2014 ◽  
Vol 644-650 ◽  
pp. 234-237
Author(s):  
Yi Zhang ◽  
Long Bin Liu ◽  
Dong Xu Liu
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Infrared Light ◽  
Total Power ◽  
Solar Panels ◽  
Radiation Model ◽  
Modeling And Analysis ◽  
Aircraft Model ◽  
Solar Radiation Model ◽  
Solar Powered

This paper proposed a numerical model to investigate the characteristics of solar energy collected by the UAV’s surface in different flight conditions. The novel model consists of a solar radiation model and a solar-powered aircraft model. The solar radiation model describes the process of the sunlight (including visible and infrared light) reaching the surface of the panels, and key effective factors are included. The solar-powered aircraft model describes a conventional layout fixed wing aircraft model with solar panels on the upper surface of the wing. The whole model was solved numerically by a computer program developed with C language to calculate the total power that the panels absorbed under different conditions. The visual and numerical results were presented and discussed in details.

scholarly journals Estimation of the Potential Achievable Solar Energy of the Buildings Using Photogrammetric Mesh Models

2021 ◽  
Vol 13 (13) ◽  
pp. 2484
Author(s):  
Yunsheng Zhang ◽  
Zhisheng Dai ◽  
Weixi Wang ◽  
Xiaoming Li ◽  
Siyang Chen ◽  
...  
Keyword(s):  
Solar Energy ◽  
Lidar Data ◽  
Radiation Model ◽  
Urban Buildings ◽  
Protection Strategies ◽  
Building Surfaces ◽  
Solar Radiation Model ◽  
3D Information ◽  
Mesh Models

Estimating the potential achievable solar energy in urban buildings is significantly important for the long-term planning and development of environmental protection strategies. Nevertheless, conventional methods based on LiDAR data are often costly and require more than one platform to obtain complete building surface information. The development of oblique photogrammetry technology enables fast and accurate acquiring of the 3D information of the surface. In this paper, we propose an efficient method to estimate the potential achievable solar energy of building surfaces based on photogrammetric mesh models. In this method, we use photogrammetric mesh models as the input data and then propose a hierarchical algorithm for shadow analysis. Combined with the solar radiation model, we then obtain the potential achievable solar energy of the building surface. We further investigate the performance of the proposed method and it is shown that this method outperforms the multi-source LiDAR data.

scholarly journals SOLAR RADIATION MODEL FOR DEVELOPMENT AND CONTROL OF SOLAR ENERGY SOURCES / SAULĖS SPINDULIAVIMO MODELIS FOTOVOLTINIŲ ELEKTRINIŲ PROJEKTAVIMUI IR VALDYMUI

2016 ◽  
Vol 8 (3) ◽  
pp. 289-295
Author(s):  
Dominykas Vasarevičius ◽  
Modestas Pikutis
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Meteorological Data ◽  
Weather Conditions ◽  
Cloud Layer ◽  
Total Solar Radiation ◽  
Radiation Model ◽  
Point Tracking ◽  
Solar Radiation Model ◽  
Power Point

The model of solar radiation, which takes into account direct, diffused and reflected components of solar energy, has been presented. Model is associated with geographical coordinates and local time of every day of the year. It is shown that using analytic equations for modelling the direct component, it is possible to adopt it for embedded systems with low computational power and use in solar tracking applications. Reflected and diffused components are especially useful in determining the performance of photovoltaic modules in certain location and surroundings. The statistical method for cloud layer simulation based on local meteorological data is offered. The presented method can’t be used for prediction of weather conditions but it provides patterns of solar radiation in time comparable to those measured with pyranometer. Cloud layer simulation together with total solar radiation model is a useful tool for development and analysis of maximum power point tracking controllers for PV modules. Pateikiamą saulės spinduliavimo modelį sudaro trys komponentai: tiesioginio spinduliavimo, sklaidos ir atspindžių. Modelyje numatyta galimybė jį susieti su fotovoltinės elektrinės vietovės geografinėmis koordinatėmis, metų diena ir vietos laiku. Modelio komponentuose panaudotos analitinės formulės nereikalauja didelių skaičiavimo resursų. Tai leidžia modelį taikyti didžiausios galios taško sekimui skirtose įterptinėse sistemose. Sklaidos ir atspindžių komponentai leidžia nustatyti fotovoltinių modulių efektyvumą elektrinės įrengimo vietovėje. Debesų modelis sudarytas remiantis gaunamais statistiniais meteorologiniais duomenimis. Pateiktas modelis negali būti naudojamas oro sąlygų prognozei. Modeliu imituojamas saulės spinduliavimas atkartoja rezultatus, gautus matuojant piranometru. Saulės spinduliavimo modelis, įvertinantis dangaus debesuotumą, yra naudingas įrankis kuriant fotovoltinių modulių didžiausios galios sekimo elektronines sistemas.

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