Buck et al. [26] have proposed a new dual-receiver concept for solar towers, using the open volumetric receiver technology. The results have shown several benefits of the new concept, especially higher thermal efficiency of the receiver, lower receiver temperature and lower parasitic losses. Wei et al. [27] have developed a new computing code, based on new method, for the design of heliostat field layout (HFLD) for solar tower power plant. In the new method, the field boundary is constrained by the receiver geometrical aperture and an efficiency factor.