摘要
增加弱聚光系统是提高闷晒式太阳能热水器综合技术经济性能的主要途径之一。光学效率是这类热水器设计的关键问题之一。本文初步探索了这类热水器的接收器——反射器系统光学效率优化设计的规律;提出了依据平均全日效率判断接收器——反射器系统光学性能优劣的准则——对不同入射角下系统的光学效率依照一天内太阳辐射的变化规律进行加权处理的方法。计算和图解两种方法均可用予具体比较和判别系统参数选择的优劣。这一判别准则对于其它非跟踪式聚光系统也适用。
Adding a low-ratio concentrator to integral solar water heater is one of principal ways to improve its comprehensive technical-economic performances. Optical efficiency is one of the key problems in design of this kind of solar water heaters. In this paper, regularities of optimum design for the optical system of receiver-reflector are studied by using a variation of solar radiation in a clear day as weighted factor because of similar variation of optical efficiencies of the system in different angles of incidence, and a criterion to compare and judge according to average daily efficiency is given. Both calculation (using computers) and graphs could be used to judge which set of parameters is better for a system. The criterion is also suitable to other kinds of untracking concentrating systems.
出处
《甘肃科学学报》
1992年第1期19-24,共6页
Journal of Gansu Sciences
基金
国家七五攻关课题"家用热水器的研制与系列化"(75-21-02-02-04)之四
子子专题"无保温层的弱聚光--闷晒复合式太阳能家用热水器"
