On the basis of the principle of entransy dissipation and the principle of minimum thermal resistance in heat transfer theory

the expression of entransy dissipation rate of the solar chimney power plant system with vertical collectors was derived and the heat transfer performance of this system was analyzed.The results show that

the structure dimensions of the chimney are the main factors affecting the performance of the solar chimney power plant system with vertical collectors.However

the height and width of the solar chimney are limited by the height and space between the windows of high buildings

thus the thickness of the solar chimney is the foremost factor to decrease the entransy dissipation of the solar power plant system.Under conditions with constant chimney height and width

the thermal resistance of entransy dissipation of the solar system reached the minimum when the solar chimney thickness was 0.959 8m

indicating the performance of the system achieved the optimum.