Solar tracking error analysis of Fresnel reflector
Jiantao Zheng1, Junjie Yan2, Jie Pei3
1School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China ; Huaneng Clean Energy Research Institute, Beijing 100098, China.
Abstract:
Depending on the rotational structure of Fresnel reflector, the rotation angle of the mirror was deduced under the eccentric condition. By analyzing the influence of the sun tracking rotation angle error caused by main factors, the change rule and extent of the influence were revealed. It is concluded that the tracking errors caused by the difference between the rotation axis and true north meridian, at noon, were maximum under certain conditions and reduced at morning and afternoon gradually. The tracking error caused by other deviations such as rotating eccentric, latitude, and solar altitude was positive at morning, negative at afternoon, and zero at a certain moment of noon.
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