Dehumidification air-conditioning method with solar heat

Claim 1

A dehumidification air-conditioning method utilizing solar heat comprising: supplying a concentrated desiccant solution from a concentrated desiccant solution tank to a dehumidification room to which air is conducted from the interior of a house; dehumidifying the air in said room by utilizing said concentrated solution whereby said concentrated solution is diluted; collecting the used dilute solution in a dilute solution tank; pre-heating the dilute solution by utilizing a heat exchanger; passing said pre-heated dilute solution through a low-temperature vacuum evaporation means for withdrawing moisture therefrom in order to acquire a mid-concentrated solution; utilizing simultaneously solar heat and vacuum in said low-temperature vacuum evaporation means in order to acquire said mid-concentrated solution; passing said mid-concentrated solution to a plurality of high-temperature vacuum evaporation means arranged in series for further withdrawing moisture from said mid-concentrated solution in order to acquire a concentrated solution; utilizing sunlight heat reflected from light collecting mirrors on each of said high-temperature vacuum evaporation means in order to directly heat said high-temperature vacuum evaporation means to thereby acquire said concentrated solution; applying a reduced pressure to said low-temperature vacuum evaporation means and to each of said plurality of high-temperature vacuum evaporation means by communicating a source of vacuum thereto; passing said concentrated solution from said high-temperature vacuum evaporation means to said heat exchanger such that said concentrated solution is cooled in said heat exchanger; and returning said concentrated solution to said concentrated desiccant solution tank.