Abstract

Solar radiation is a major factor in promoting the sustainable development of urban settlements. To understand the distribution of solar radiation in urban settlements, this paper develops the sky view factor (SVF) algorithm based on the parameterization platform to simplify the calculation of solar radiation. In this paper, the test of total solar radiation is carried out in 18 different locations in Xi'an University of Architecture and Technology. The total solar radiation of 18 points is calculated using the SVF-based calculation model. Comparing the calculated results with the measured results, it is found that the calculated values are consistent with the measured values. The results show that the algorithm is consistent with the measured data. It shows the effectiveness and high precision of the proposed algorithm. The algorithm can calculate the total solar radiation more quickly, and provide technical support for urban preliminary design schemes in urban microclimate.

Highlights

  • With more than the half of the world population living in cities today [1], urban environmental sustainability has become the frame researchers and practitioners in urban design and planning

  • This paper implements the automatic calculation of sky view factor (SVF) based on the parametric 3D model plug-in platform, selects the solar radiation calculation based on SVF, and compares the calculated data with the test data in order to test the accuracy of the algorithm and the calculation model

  • The total solar radiation value of the settlement is selected from the hourly data during the test, and the measured data is analyzed

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Summary

Introduction

With more than the half of the world population living in cities today [1], urban environmental sustainability has become the frame researchers and practitioners in urban design and planning. Solar radiation is a major factor in promoting environmental sustainability in urban settlements. To understand the distribution of solar radiation in urban settlements will help provide technical support for the city's project design. The solar radiation received by the urban ground is different from that of the suburbs, which in turn affects the near-surface temperature and the urban heat island intensity. The presence of sky occlusion affects the height average radiant temperature of the pedestrian and the thermal comfort of the human body, as well as the heating and energy consumption of the building [3]. The sky view factor (SVF) is a morphological parameter that describes the degree of occlusion of the sky and is a key parameter for calculating surface radiation [4]

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