A mathematical model of flow and heat transfer for power generation system equiped with hot-air-flow turbine using solar energy

including heat energy storage layer and turbine proper

has been established

and the influence of solar radiation and pressure drop across the turbine upon power output from and energy loss in the said power generation system being analysed.The calculation results of 2-D steady state numerical simulation carried out on the MW-class power generation system using solar energy show that the solar rediation and pressure drop across the turbine both have signigicant effects upon the power output and outlet parameters of the said system;when the solar radiation is large than 600 W/m2

and pressure drop across the turbine is higher than 320 Pa

the power output of the system can reach 120 KW and more.The large mass flow rate of air through the chimney may be the main factor of energy loss in the system

while the canopy of heat collector may also result in large energy loss.