Abstract: The invention relates to a solar receiver with natural circulation for generating saturated steam, which uses water/steam as a heat-transfer fluid and includes a combined circuit for fluid recirculation (forced circulation and natural circulation). The system comprises: water-walls which receive the radiation on the surface thereof and inside which the working fluid changes phase; riser pipes through which the water/steam mix exiting the pipes of the receiver rises towards the drum; downpipes through which the recirculation water descends from the drum to the receiver; and a support pump in order to increase the incident power in the receiver and start up the plant when necessary.

Abstract: Magnetic tape (1) device (4) for magnetic encoder and manufacturing and installation procedures for this device (4). The magnetic tape (1) has a magnetized surface and a non-magnetized surface in the device (4), which also comprises a clamp (2) with fastening means, such that when the device (4) is mounted on a rotating shaft (5) then the magnetic tape (1) is located between the outer surface of the shaft (5) and the inner surface (7) of the clamp (2) on which the magnetic tape (1) is adhered by its magnetized surface. A manufacturing procedure for this device (4) and an installation procedure for this device (4) on a rotating shaft (5) is also described.

Abstract: A solar concentration plant which uses water/steam as a fluid, in any thermodynamic cycle for the exploitation of process heat, comprising an evaporation subsystem, where saturated steam is produced, a superheater subsystem through which the steam reaches the required conditions of pressure and temperature at the turbine inlet, and an attemperation system interconnected by a drum. A field of heliostats is pointed towards either of the subsystems (evaporator or superheater), in such a way to control both the pressure within the drum and the outlet temperature of the superheated steam.

Abstract: A solar concentration plant which uses water/steam as a heat-carrying fluid, in any thermodynamic cycle or system for the exploitation of process heat, which is comprised of an evaporation subsystem, where saturated steam is produced under the conditions of pressure of the system, and a superheater subsystem through which the steam reaches the required conditions of pressure and temperature at the turbine inlet, and in which an attemperation system (10) may be incorporated, these being physically separated and interconnected by means of a drum (5) in which the separation of water and steam takes place, and in which a strategic control of the pointing of the field of heliostats (1) towards either of the subsystems (evaporator or superheater) may be carried out, with individual or group pointing of the heliostats, in such a way that they jointly control both the pressure within the drum (5) and the outlet temperature of the superheated steam (11).

Abstract: Magnetic tape (1) device (4) for magnetic encoder and manufacturing and installation procedures for this device (4). The magnetic tape (1) has a magnetized surface and a non-magnetized surface in the device (4), and comprises a clamp (2) with fastening means (3). The magnetic tape (1) is adhered by its magnetized surface to the surface (7) of the clamp (2) opposed to the surface (8) on which the fastening means (3) are placed. The invention also comprises a manufacturing procedure for this device (4) and an installation procedure for this device (4) on a rotating shaft (5).

Abstract: Which, using a heat transfer fluid in any thermodynamic cycle or system for using process heat, comprises: two-dimensional solar concentrator means for heating the heat transfer fluid from a temperature T1 to a temperature T2; three-dimensional solar concentrator means for overheating the heat transfer fluid from a temperature T2 to a temperature T3; such that the advantages of working at high-temperatures of the three-dimensional solar concentrator means are taken advantage of with overall costs similar to those of two-dimensional solar concentrator means. In a specific application for generating electric power, the two-dimensional solar concentrator means consist of a parabolic trough collector (1), while the three-dimensional solar concentrator means consist of a heliostat field and central tower (2) for generating overheated steam that expands in a turbine (6) coupled to an electric generator (7).

Abstract: Low concentration solar plant and method for maximizing the electricity production of the photovoltaic modules thereof, that uses a combination of tracking and low concentration solar technologies for maximizing the electricity production of conventional photovoltaic modules, the system used to protect the modules being any method designed to protect photovoltaic modules from the damage they may suffer when subjected to very high intensity solar radiation. Preferably, to avoid possible damage, the invention proposes a temperature measurement and/or control system that assists a mechanism for defocusing the photovoltaic modules when said radiation reaches a predetermined level. The invention is applicable to photovoltaic solar electricity production.

Abstract: A solar concentration plant which uses water/steam as a heat-carrying fluid, in any thermodynamic cycle or system for the exploitation of process heat, which is comprised of an evaporation subsystem, where saturated steam is produced under the conditions of pressure of the system, and a superheater subsystem through which the steam reaches the required conditions of pressure and temperature at the turbine inlet, and in which an attemperation system (10) may be incorporated, these being physically separated and interconnected by means of a drum (5) in which the separation of water and steam takes place, and in which a strategic control of the pointing of the field of heliostats (1) towards either of the subsystems (evaporator or superheater) may be carried out, with individual or group pointing of the heliostats, in such a way that they jointly control both the pressure within the drum (5) and the outlet temperature of the superheated steam (11).

Abstract: Which, using a heat transfer fluid in any thermodynamic cycle or system for using process heat, comprises: two-dimensional solar concentrator means for heating the heat transfer fluid from a temperature T1 to a temperature T2; three-dimensional solar concentrator means for overheating the heat transfer fluid from a temperature T2 to a temperature T3; such that the advantages of working at high-temperatures of the three-dimensional solar concentrator means are taken advantage of with overall costs similar to those of two-dimensional solar concentrator means. In a specific application for generating electric power, the two-dimensional solar concentrator means consist of a parabolic trough collector (1), while the three-dimensional solar concentrator means consist of a heliostat field and central tower (2) for generating overheated steam that expands in a turbine (6) coupled to an electric generator (7).