A comparison of several diffuse solar radiation models for Greece期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

A comparison of several diffuse solar radiation models for Greece

Authors:	B D Katsoulis

Institution:	(1) Department of Physics, University of Ioannina, Greece

Abstract:	Summary This paper attempts to test the applicability of existing correlation models to the estimation of diffuse radiation with respect to measured values at a station. There are two types of model: The first type depends on the fraction of monthly average daily diffuse radiation to total solar radiation, $K = {{\bar H_d } \mathord{\left/ {\vphantom {{\bar H_d } {\bar H}}} \right. \kern-\nulldelimiterspace} {\bar H}}$ , as a function of the clearness index, $K_T = {{\bar H} \mathord{\left/ {\vphantom {{\bar H} {\bar H}}} \right. \kern-\nulldelimiterspace} {\bar H}}_O$ . The second type expresses the fraction ${{\bar H_d } \mathord{\left/ {\vphantom {{\bar H_d } {\bar H}}} \right. \kern-\nulldelimiterspace} {\bar H}}$ or ${{\bar H_d } \mathord{\left/ {\vphantom {{\bar H_d } {\bar H}}} \right. \kern-\nulldelimiterspace} {\bar H}}_O$ as a function of the sunshine fraction ${{\bar n} \mathord{\left/ {\vphantom {{\bar n} {\bar N}}} \right. \kern-\nulldelimiterspace} {\bar N}}$ Therefore, it presents statistically based correlations between global radiation and its diffuse component on a horizontal surface and suggests two equations to determine the ratio of diffuse radiation to total radiation received on a horizontal surface. The results of these correlation equations are compared with other accepted equations.With 3 Figures

Keywords:
本文献已被 SpringerLink 等数据库收录！

设为首页 | 免责声明 | 关于勤云 | 加入收藏