An apparatus for producing water from ambient humidity, comprising a solar receiver, the solar receiver comprising:
- a frame;
- a reflective surface which is configured to reflect solar radiation and which is fixed to the frame;
- the reflective surface having a focusing axis for theincident solar radiation;
- a thermal absorber which is transparent to solar radiation and which is positioned substantially in the region of the focusing axis;
- the thermal absorber;
- the apparatus further comprising:
- a casing which is in fluid dynamic communication with the thermal absorber so as to generate a working circuit;
- an intake valve which connects the casing to the external environment through a respective intake opening which opens from the casing and which is configured to allow the introduction of air from the external environment into the working circuit;
- an emission valve which connects the casing to the external environment through a respective emission opening which opens from the casing and which is configured to allow the emission of air from the working circuit;
- a condenser which is connected to the casing;
- a drying material which is arranged inside the casing;
- a device for the forced circulation of air which is connected, in fluid-dynamic terms, to the casing and to the solar absorber, the device for the forced circulation of air being configured so as to generate an incoming air current and/or an outgoing air current into/from the casing;
- the intake valve and emission valve being selectively actuatable from an open configuration to a closed configuration, and vice versa, so as to allow in a selective and reversible manner the fluid-dynamic connection between the drying material and surrounding humid air, which is present in the external environment, or between the drying material and warm air and/or vapor which are contained in the working circuit and heated by the thermal absorber so as to carry out an adsorption cycle of the humidity by the drying material and a desorption cycle of water vapor from the drying material, respectively;
- wherein the device for the forced circulation of air is configured to operate according to two operating configurations, a first configuration, in which the intake valve and the emission valve are open and the device for the forced circulation of air generates the air current which is introduced into the casing so that there takes place the adsorption cycle of the humidity by the drying material, and a second configuration, in which the valves are closed and the desorption cycle of water vapor by the drying material takes place by means of forced circulation of the warm air and/or the vapor in the working circuit, through the thermal absorber and the drying material, the forced circulation being obtained by means of the device for the forced circulation of air.