摘要
利用太阳能供暖既能解决能源危机,又可以保护环境,具有双重的应用价值。由于太阳能具有不稳定性等特点,集热器作为主要的采暖设备,其面积大小影响着采暖系统的投资及运行效果。根据北京地区典型年气象资料以及太阳能辐射量和建筑热负荷随时间变化的特点,提出一种确定太阳能集热器面积比的新方法,计算得到集热器面积比随时间变化的规律。结果表明,在满足太阳能保证率的条件下,能够较准确地确定所需的最小集热器面积,为太阳能采暖系统设计提供一定的依据。
Making use of solar energy can not only solve energy crisis,but also protect the environment,thus possessing the double application valves.Due to features of solar energy such as instability,the area of collector,the major heating equipment,affects the investment and operating effect of heating system.In the light of typical weather data of Beijing and also the feature that solar energy radiation and architecture heat load change with the time,the article brings forward a new method for determining the area ratio of solar energy collector,and finds out the law that the ratio area changes with the time.The result shows that under the condition of meeting solar energy guarantee rate,the method can accurately determine the minimum collector area needed,thus providing the basis for the design of solar energy heating system.
基金
国家重点基础研究发展规划项目(09CB220007)
陕西省教育厅项目(09JK552)
关键词
太阳能采暖
集热器
热负荷
Solar energy heating
Collector
Thermal load
