The incident product factor of the evacuated solar energy collectortube is introduced for simplifies calculation about it.
为了简化真空太阳集热管能量采集的计算，提出了真空太阳集热管入射乘积因子的概念。
2
Researching on the configuration and unsteady state efficiency of the glass evacuated solar collectortube with an inserted heat pipe in this paper.
本文针对玻璃真空管内插热管式太阳能集热器的结构特点、非稳态效率进行了研究。
3
The vacuum degree between the inner and cover glass tubes plays a very important role in heat loss and the life time of all-glass evacuated collectortube.