Low-nitrogen condensing boilers refer to boilers that use full premixed combustion technology. Full premixed combustion refers to the combustion method in which natural gas is fully mixed with air in a certain proportion before combustion, and no longer needs to supply air during the combustion process. Ordinary gas-fired boilers usually use a combustion method in which air and fuel are respectively sent into the combustion chamber for combustion, and the fuel combustion efficiency is adjusted by the air-fuel ratio. The difference between ordinary gas boilers and low nitrogen condensing boilers is whether air and natural gas are mixed before entering the combustion head or after exiting the combustion head. The purpose of the full premixed combustion method of the low nitrogen condensing boiler is to improve the combustion efficiency of the boiler, while the combustion efficiency of ordinary condensing gas boilers on the market has basically reached more than 98%, and the low nitrogen condensing boiler has not much room for improvement in terms of improving the combustion efficiency. , the price is not high. Therefore, the combustion efficiency of low-nitrogen condensing boilers and condensing boilers is not much different, but the burners made by individual manufacturers cannot be used as mainstream products. And according to the documents of boiler supervision departments in other regions, the use of premixed technology burners is not recommended in gas-fired boilers with an evaporation capacity greater than 10T/H, so everyone should understand the policy clearly when purchasing low-nitrogen condensing boilers. In order to avoid acid corrosion of flue gas in general boilers, the exhaust gas temperature must be higher than the dew point, while the exhaust gas temperature of condensing boilers is lower than the dew point, and the water vapor in the flue gas condenses into a liquid state, and the thermal efficiency of ordinary gas-fired boilers is above 92% , while the thermal efficiency of low nitrogen gas boilers is above 98%. The level of thermal efficiency not only affects the fuel consumption and working time, but also affects the operating cost of the boiler. The content of the article comes from the Internet, if you have any questions, please contact me to delete it!