An air supply system for a manufacturing site, comprising: - a desiccant and evaporative cooling arrangement; - an exhaust air scrubber; - first air supply conduits from the desiccant and evaporative cooling arrangement to at least one contaminated air generating indoor space; - secondary disposal conduits from the at least one contaminated air generating indoor space to the exhaust air scrubber and to the desiccant and evaporative cooling arrangement; wherein the desiccant and evaporative cooling arrangement is configured to condition fresh outdoor air as input air for the use in the contaminated air generating indoor space; wherein the first air supply conduits are configured to provide the conditioned air as supply air to the at least one contaminated air generating indoor space; and the secondary disposal conduits are configured to conduct contaminated exhaust air from the at least one contaminated air generating indoor space to the exhaust air scrubber; and to provide the scrubbed air to the desiccant and evaporative cooling arrangement; and wherein the exhaust air scrubber is configured to remove air contamination to a predefined amount, wherein the predefined amount is set such that the air can be used further in the desiccant and evaporative cooling arrangement; wherein it is provided to remove volatile organic compounds by a degree of at least approximately 70%; and wherein the scrubbed air is used for at least one of the group of: - cooling the input air by heat recovery; and - desiccating a drying agent of the desiccant and evaporative cooling arrangement; and characterized in that the first air supply conduits are provided from the desiccant and evaporative cooling arrangement to the at least one air-conditioned indoor space; secondary air supply conduits are provided from the at least one air-conditioned indoor space to an air supply arrangement, and from the air supply arrangement to the at least one contaminated air generating indoor space; the desiccant and evaporative cooling arrangement is configured to condition fresh outdoor air as input air for the use in the air-conditioned indoor space; the air supply arrangement is configured to condition exhaust air from the at least one air-conditioned indoor space for the use in the contaminated air generating space; and the first air supply conduits are configured to provide the conditioned air as supply air to the at least one air-conditioned indoor space; and the secondary air supply conduits are configured to conduct exhaust air from the at least one air-conditioned indoor space to the air supply arrangement; and to provide the conditioned air as supply air to the at least one contaminated air generating indoor space. - a desiccant and evaporative cooling arrangement; - an exhaust air scrubber; - first air supply conduits from the desiccant and evaporative cooling arrangement to at least one contaminated air generating indoor space; - secondary disposal conduits from the at least one contaminated air generating indoor space to the exhaust air scrubber and to the desiccant and evaporative cooling arrangement; wherein the desiccant and evaporative cooling arrangement is configured to condition fresh outdoor air as input air for the use in the contaminated air generating indoor space; wherein the first air supply conduits are configured to provide the conditioned air as supply air to the at least one contaminated air generating indoor space; and the secondary disposal conduits are configured to conduct contaminated exhaust air from the at least one contaminated air generating indoor space to the exhaust air scrubber; and to provide the scrubbed air to the desiccant and evaporative cooling arrangement; and wherein the exhaust air scrubber is configured to remove air contamination to a predefined amount, wherein the predefined amount is set such that the air can be used further in the desiccant and evaporative cooling arrangement; wherein it is provided to remove volatile organic compounds by a degree of at least approximately 70%; and wherein the scrubbed air is used for at least one of the group of: - cooling the input air by heat recovery; and - desiccating a drying agent of the desiccant and evaporative cooling arrangement; and characterized in that the first air supply conduits are provided from the desiccant and evaporative cooling arrangement to the at least one air-conditioned indoor space; secondary air supply conduits are provided from the at least one air-conditioned indoor space to an air supply arrangement, and from the air supply arrangement to the at least one contaminated air generating indoor space; the desiccant and evaporative cooling arrangement is configured to condition fresh outdoor air as input air for the use in the air-conditioned indoor space; the air supply arrangement is configured to condition exhaust air from the at least one air-conditioned indoor space for the use in the contaminated air generating space; and the first air supply conduits are configured to provide the conditioned air as supply air to the at least one air-conditioned indoor space; and the secondary air supply conduits are configured to conduct exhaust air from the at least one air-conditioned indoor space to the air supply arrangement; and to provide the conditioned air as supply air to the at least one contaminated air generating indoor space.