高技术通讯2012，Vol.22Issue(4)：441-447,7.DOI:10.3772/j.issn.1002-0470.2012.04.017
FAST“太阳灶”问题及温度场研究
Study of FAST' s "solar cooker" problem and temperature field
摘要
Abstract
The temperature distribution and the " solar cooker" problem of the five-hundred-meter aperture spherical radio telescope (FAST) were studied in detail. The results show that the "solar cooker" problem of the FAST is not only relevant to the reflector reflectivity, porosity rate and time point, but also to the reflectivity of the feed cabin, materials, diameter of the microwave inlet and other factors. When the reflector reflectivity is 0.2 and the porosity rate is 0.4, the maximum temperature of the feed cabin is 47. 56℃. At the time of 14:00, the temperature of reflector surface reaches the maximum of 68.34℃. When the angle between the dirction of sun light and that of the telescope pointing is more than 3.1°, the "solar cooker" problem is not apparent. This work is of practical significance because it provided useful data and scientific bases for design and use of the FAST so as to weak, avoid, and elimi-nat the harmful effects of the " solar cooker".关键词
500米口径球面射电望远镜(FAST)/太阳灶/馈源舱/反射面/温度分布Key words
five-hundred-meter aperture spherical radio telescope (FAST) / solar cooker/ feed cabin/ reflector/ temperature distribution引用本文复制引用
宋立强,王启明,郭永卫..FAST“太阳灶”问题及温度场研究[J].高技术通讯,2012,22(4):441-447,7.基金项目
国家自然科学基金(10878017)和中国科学院国家天文台青年人才基金(0835032002)资助项目. （10878017）
