Wet-back Fire Tube Boiler for Sale
2018-08-14 11:15:37
The two most commonly types of boilers are the dry and wet back. Wet back have steadily become more popular option as they are considerably more efficient and require far less maintenance. The term ‘wet back’ comes from the fact that the reversal chamber is completely surrounded by water. This means the maximum amount of heat is conducted to the water, providing maximum efficiency. Dry back boilers do not completely cover the reversal chamber, lowering the efficiency as some of the heat is lost to the atmosphere.
WNS series fire tube boiler produced by ZBG adopts wet-back structure with butt weld to improve the reliability and reduce the maintenance cost, mainly used in hospital, school, swimming pool, pharmaceutical factory, package plant, architectural material industry, food industry, textile dyeing and printing industry, clothing industry and other industries.
Our wet-back fire tube boilers are horizontal arrangement, three pass boiler. Three-pass: The first pass of the water will be through the partly corrugated furnace and the cylindrical combustion chamber. The second pass starts when the water converts into steam and flow from the furnace into small bore smoke tubes located over the furnace. At the end of the pass and near the central smoke box, the flow divides into two parts. The third pass of the steam is through the smoke tubes located outside the main arrangement and which opens at the exit on the rear of the boiler.
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