Apparatus and installations for heating, steam generation, refrigerating, drying, ventilating, and humidifying, for the textile industry and the food industry as well as for woods and goods made of wood, namely, heat sinks for use in heating; cooling and ventilating apparatus, namely, humidifiers, steam generators, industrial dryers, vacuum pumps and ventilators; vacuum steam generators comprised of steaming chambers, cooling chambers, heating coils and bars; all of the foregoing used to gene...