A new low-cost collector has been conceived for solar heat for industrial processes: the SunDial. This collector seeks cost reduction by means of an innovative design that must carefully address the important effects of cosine and end losses. An in-house Monte Carlo Ray Tracing code is used to asses these effects for different configurations. It results that a low tilt of the field might help to reduce importantly cosine losses, whereas in order to reduce end losses fields with higher length/width ratio are required. This study leads to a design methodology that will be used in the construction of two prototypes that will be built for two different end-users in the framework of the H2020 project ASTEP.