Abundance of Sun Resource Brings Extra Profits on Dish Stirling Solar Power Station

Abstract

Solar dish Stirling power plant typically contains hundreds of dishes distributed in a field, each of which must be well separated to avoid shading from neighbors, in order to guarantee the safety of device and optimal profits. Taking into account the thermal properties of the Stirling engine, we consider the influence of the abundance of sun resource of installation locations on shading effect. Our results show that the key parameter relating to shading is the West-to- East distance of dish layout unit (nearest four dish), manifesting an approximate linear relation. Its slope describing how quickly a required minimal level shade can be obtained by increasing land usage steepens with the increase of sun resource abundance. These results suggest extra benefits for installing solar power plant in regions with plenty annual sun radiation.