我们的文章《无压热水锅炉的问题》在《华北工业锅炉通讯》和《暖通空调》(1993年第1期)发表,其主要观点是:无压热水锅炉供暖系统的根本缺点是循环水泵的扬程要承担系统高度的静水压力,电能消耗约为有压热水锅炉的2～7倍,楼层越高倍数越大,所以在实际工程中难以采用。李之光教授最近又提供《常压热水锅炉供暖系 Our article “Problems of Pressureless Hot Water Boilers” was published in “North China Industrial Boiler Communication” and “Heating Ventilation and Air Conditioning” (1993, Issue 1). Its main point is: The fundamental disadvantage of a pressureless hot water boiler heating system is that The head of the circulating pump must bear the hydrostatic pressure of the system, and the power consumption is about 2 to 7 times that of the pressure hot water boiler. The higher the floor, the larger the multiplier, so it is difficult to use in the actual project. Prof. Li Zhiguang recently provided the "Normal Pressure Hot Water Boiler Heating System.