我国现有工业锅炉二十多万台,其中热水锅炉占四分之一,由于供暖、工业及生活用热水,特别是我国冬季供暖对锅炉需求量很大。热水采暖与蒸汽采暖相比具有较高的经济性和安全性。热水采暖管网热损失及排污热损失较小,可比蒸汽采暖节约燃料20～40％,且能节约大量钢材,其工程造价及维修费用均比蒸汽采暖低。为了节约能源和发展集中供热需要,热水锅炉的使用和发展日 China’s existing industrial boilers more than 200,000 units, of which one-fourth of the hot water boiler, due to heating, industrial and domestic hot water, especially in winter heating our boilers demand is great. Hot water heating compared with steam heating has higher economy and safety. Hot water heating pipe network heat loss and heat loss less heat than the steam heating fuel savings of 20 to 40%, and can save a lot of steel, the project cost and maintenance costs are lower than the steam heating. In order to save energy and develop central heating needs, hot water boiler use and development day