Energy and Exergy Analysis of Parabolic Trough Concentrating Solar Power System under Multiple Operation Modes

The multivariate, strong-coupling and variable-structure characteristics of parabolic trough concentrating solar power (PTCSP) system bring challenges to its optimization and control. In view of insufficiencies of existing research, this paper analyzes the structural features and parameter relations of PTCSP under major operation modes, building system-wide energy and exergy analysis model based on mechanism modeling. Then the loss distribution of the system and the influence of input variables on operation parameters and system efficiency are discussed. Results explain the effects of coupling and switch of operation modes and indicate the major influence factors of system efficiency, providing active guidance for the operation optimization of PTCSP.