一、空气的危害 蒸汽供热系统中存在空气,不仅会引起管道及设备的腐蚀,而且还会降低供热设备的传热性能,影响凝结水的回收,造成能源浪费。 如供热设备内存在0.026毫米厚的空气膜,其传热热胆相当于0.58毫米厚的水膜或46毫米厚的钢板的热阻。1％的空气含量,可使放热系数降低60％之多。 目前,在供热设备中使用的疏水器,其中有许多种不具备排除空气能力或排气能力很差。用这种疏水器的系统,当系统 First, the harm of air The existence of air in the steam heating system, not only will cause corrosion of pipelines and equipment, but also reduce the heat transfer performance of heating equipment, affect the recovery of condensed water, resulting in energy waste. If there is a 0.026 mm thick air film inside the heating equipment, the heat transfer heat exchanger is equivalent to the thermal resistance of a 0.58 mm thick water film or a 46 mm thick steel plate. A 1% air content can reduce the heat release coefficient by as much as 60%. At present, many steam traps used in heating equipment do not have the ability to remove air or have poor exhaust capability. With this steam trap system, when the system