Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; air deodorizing apparatus; air driers; air filtering installations; air purifying apparatus and machines; clarifying installations; installations for conditioning air; desiccating apparatus; dryers; drying apparatus and installations; ventilation (air-conditioning) installations and apparatus; water purification installations; water purifying apparatus and machines; dehumidifiers