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用回热系统的凝结水通过低压省煤器冷却锅炉的排烟,可以达到节能的目的。文中以10万千瓦和20万千瓦机组为例,阐述了该两类机组加装低压省煤器的联结方式、节能效果及其计算公式。并提出了推广的意见。一、利用低压省煤器节能在锅炉的各项热损失中,一般是以排烟热损失的数值最大。多数火电厂锅炉的排烟温度均在150℃以上,高的达180℃。将大量的热量作为废热排放到大气中,用低压省煤器降低排烟温度,回收一部分热量,可收到显著的节能效果。据计算排烟温度每降低10℃,锅炉效率
Using the condensate of the regenerative system to cool the boiler exhaust through the low-pressure economizer can save energy. In this paper, taking 100,000kW and 200kW units as an example, the connection mode, energy saving effect and calculation formula of the two types of units with low pressure economizer are described. And put forward the promotion of opinions. First, the use of low-pressure economizer energy-saving in the boiler of the heat loss, the general is the heat loss of smoke the largest value. Most thermal power plant boiler exhaust temperature is above 150 ℃, high up to 180 ℃. Will be a lot of heat as waste heat emissions to the atmosphere, with low-pressure economizer to reduce exhaust temperature, part of the heat recovery, you can receive significant energy savings. According to calculate the exhaust gas temperature is reduced by 10 ℃, boiler efficiency