Some comments on time variation in solar radiation over Baghdad, Iraq

被引：8

作者：

Al-Riahi, M ^{[1
]}

Al-Kayssi, A ^{[1
]}

机构：

[1] Solar Energy Res Ctr, Baghdad, Iraq

来源：

RENEWABLE ENERGY | 1998年 / 14卷 / 1-4期

关键词：

global and diffuse radiation; solar radiation transmission; UV radiation; spectral radiation;

D O I：

10.1016/S0960-1481(98)00107-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the present work an attempt was made to study and examine some aspects of radiation climatology which are important in solar energy utilization. The early cumulative global radiation for Baghdad is 216 MJ/m(2) per year, while the annual total of daily diffuse radiation at Baghdad is about 70.82 MJ/m(2). The mean monthly values of clearness index K-T present a maximum of 65.9% in August and a minimum value of 48.4% in January. The annual mean of daily global radiation and its spectral OG1, RG2 and RG8 at Baghdad is about,18.03, 13.53, 10.86 and 9.36 MJ/m(2), respectively. Over the year, the highest UV radiation were received during June and July (243 Wh/m(2)) and the lowest in December (79 Wh/m(2)). Furthermore, UV radiation constituted on average 3.25% of global radiation. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：479 / 484

页数：6

共 7 条

[1]

ALRIAHI M, 1992, MODERN AOTUOMATED SO

[2] NUMERICAL SOLAR-RADIATION MODEL BASED ON STANDARD METEOROLOGICAL OBSERVATIONS [J].