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为了节约能源,热水采暖正在逐渐取代蒸汽采暖。随着集中供热的发展,对极大容量的水锅炉的需要量与日俱增。近几年来,国内自然循环热水锅炉正在代替管架式或蛇形管式强制循环热水锅炉。但是,自然循环热水锅炉中水的温差较小,即比重差很小。在这种情下能否克服水管锅炉中的流动阻力,建立稳定可靠的自然循环,这是值得每个设计者应该
In order to save energy, hot water heating is gradually replacing steam heating. With the development of district heating, the demand for large capacity water boilers is increasing day by day. In recent years, the domestic natural circulation hot water boiler is replacing pipe rack or serpentine tube forced circulation hot water boiler. However, natural circulation of water boiler water temperature difference is small, that is, the proportion of small difference. Under such circumstances can overcome the flow resistance in the water tube boiler to establish a stable and reliable natural circulation, it is worth every designer should