A cabin cooling system, which eliminates the internal circulation and external circulation fans in air conditioning systems by using waste pressure and hot air, and which is operated in a closed system, comprising: - at least one air pump, which enables the input air that is comprised of the ambient air, outer air or a mixture thereof at certain ratios to be brought to a predetermined pressure value, - at least one vortex tube having a cold outlet and a hot outlet, wherein the air leaving through said cold outlet is used for cabin air circulation and the air leaving through said hot outlet is used for regeneration, characterised by, - at least one vessel containing liquid desiccant which enables the cold air leaving the vortex tube to be dried at a fixed temperature, - at least one primary air amplifier, in which the dry air, which is dried by removal of the water vapor therein by means of the liquid desiccant, is combined with the in-vehicle cabin air and cooled to a predetermined temperature value, - at least one circulation pump which enables to draw the liquid desiccant, whose concentration has decreased with the water vapor condensed in the air, from said vessel - at least one regeneration vessel wherein the liquid desiccant with low concentration drawn by the circulation pump is regenerated by the hot air leaving through said hot outlet of the vortex tube, - at least one serpentine wherein the hot liquid desiccant leaving the regeneration vessel is dried with outer environment air, - at least one secondary air amplifier which works with the hot air leaving the regeneration vessel and which enables to cool the hot liquid desiccant by drawing the outer environment air into the system and passing it over the serpentine. - at least one air pump, which enables the input air that is comprised of the ambient air, outer air or a mixture thereof at certain ratios to be brought to a predetermined pressure value, - at least one vortex tube having a cold outlet and a hot outlet, wherein the air leaving through said cold outlet is used for cabin air circulation and the air leaving through said hot outlet is used for regeneration, - at least one vessel containing liquid desiccant which enables the cold air leaving the vortex tube to be dried at a fixed temperature, - at least one primary air amplifier, in which the dry air, which is dried by removal of the water vapor therein by means of the liquid desiccant, is combined with the in-vehicle cabin air and cooled to a predetermined temperature value, - at least one circulation pump which enables to draw the liquid desiccant, whose concentration has decreased with the water vapor condensed in the air, from said vessel - at least one regeneration vessel wherein the liquid desiccant with low concentration drawn by the circulation pump is regenerated by the hot air leaving through said hot outlet of the vortex tube, - at least one serpentine wherein the hot liquid desiccant leaving the regeneration vessel is dried with outer environment air, - at least one secondary air amplifier which works with the hot air leaving the regeneration vessel and which enables to cool the hot liquid desiccant by drawing the outer environment air into the system and passing it over the serpentine.