To comprehensively measure performance of the solar power generation system

based on the commonly used heat balance equations

the pressure equations and ideal gas status equations were added to establish the one dimensional compressible transient model for heat collecting shed and chimney in the solar power generation system.This model can calculate the distributions of temperature

pressure and density of the gas flow

it shows the dynamic variations of the total pressure difference of the system are in agreement with the literature test data.Moreover

this established model was applied to investigate the effects of structural parameters of the chimney on the chimney efficiency.The results show that

the chimney efficiency increases with the chimney height and diameter dramatically.Using convergent shape will decrease the chimney efficiency while the divergent shape can increase the chimney efficiency.However

when the chimney tilt angle further increases when it reaches the peak value

the chimney efficiency changes little.