Based on thermodynamic analysis of a black copper tube heated by solar trough concentrating system

the mathematic model was established which was testified by comparison between results of the simulation and measurement. The effects of many factors to a black copper tube and a all-glass evacuated tube heated by solar trough concentrating system had been calculated and analyzed according to the mathematic model. It indicated that the improvement of mirror’s reflectivity

the lessening of thermal loss and the improvement of acceptant body’s coefficient about heat conduction is good for the improvement of thermal efficiency. The results provide an objective theoretical basis and reference to reasonably applying trough concentrating system in solar heating fields.