Device for continuous and efficient water absorption and regeneration of desiccant, an air cooler, and a method for controlling such a device

A device for absorbing water comprising:

• at least one water absorption section for absorbing water from a gas flow using a liquid desiccant, wherein the water absorption section is operatively connected to at least one liquid desiccant container for delivery of liquid desiccant to and from the water absorption section, wherein the at least one liquid desiccant container is further operatively connected to a liquid desiccant regenerating section for delivery of liquid desiccant to and from the at least one liquid desiccant container, and wherein the liquid desiccant regenerating section comprises at least one boiler comprising a container
• a vacuum system operatively connected to the boiler for reducing the pressure in the container and wherein the regenerating section further comprises a heating unit operatively connected to the container configured to heat the liquid desiccant in the container, and
• wherein the device further comprises a control unit configured to obtain or determine a concentration value of liquid desiccant and to be operatively connected to the vacuum system for controlling the vacuum system to reduce the pressure in the container to a first pressure during regeneration of liquid desiccant;
• wherein the control unit also communicates with the liquid desiccant container to determine or detect or measure temperature and concentration of collected liquid desiccant in the liquid desiccant container;
• and also temperature and humidity of a surrounding atmosphere and wherein the control unit is configured to set a predetermined or threshold concentration value at which regeneration of the liquid desiccant should be performed or when, and what quantity, of liquid desiccant in the liquid desiccant container should be transported to the liquid desiccant regeneration section based on an ambient temperature and relative humidity and the concentration of a collected dispensed liquid desiccant in the liquid desiccant container.