What is the position and function of boiler evaporation tube bundle and water cooling tube panel?

Evaporation tube bundle and water cooling tube panel are two important heating surfaces of the boiler, which are all arranged inside the boiler, so it is not easy to see them intuitively.

Boiler evaporation tube bundle

Evaporation tube bundle mainly absorbs convection heat transfer in small and medium-sized boilers. Generally, it is a bundle of dense staggered piping systems consisting of ascending pipes and descending pipes that connect the upper and lower drums. The heat load of the tubes in the evaporation tube bundle is high, and this part of the tubes is changed into steam by hot water, which moves from bottom to top; Its main function is to absorb heat, transfer it to water and steam, and act as the rising part of boiler water circulation.

Boiler water-cooled tube panel

Water-cooled tube panel of boiler is a panel heating surface arranged in the furnace, and there are generally water-cooled panel heating surfaces (belonging to water circulation system). Water-cooled tube panel of boiler can increase heat exchange area and increase evaporation capacity; Reduce the thickness of furnace wall; The function of reducing the weight of furnace wall.