Kiertovesihöyrykattilat

Kiertovesihöyrykattilat, also known as circulating water tube boilers, are a type of boiler used to generate steam. They are characterized by a system where water is continuously circulated through tubes that are heated by a fuel source. This circulation helps to improve heat transfer efficiency and prevents overheating of the tubes.

The basic principle of operation involves a circulating pump that moves water from a steam drum through a series of tubes, often arranged in a serpentine or helical pattern, which are exposed to the combustion gases. As the water passes through these heated tubes, it absorbs heat and turns into steam. The steam-water mixture then returns to the steam drum, where the steam is separated from the water. The separated steam is then available for use in various industrial processes or for power generation.

Kiertovesihöyrykattilat are known for their ability to produce steam relatively quickly and to handle significant pressure variations. Their design allows for efficient heat transfer due to the continuous flow of water, which minimizes the risk of localized overheating and tube failure. They are commonly used in industrial settings, power plants, and for process heating applications where a reliable and consistent supply of steam is required. The design can vary in complexity, with some incorporating superheaters to further increase steam temperature or economizers to preheat the incoming feedwater using the waste heat from the flue gases.