In China, the coal to natural gas movement is in full swing. The application of hot water boilers has greatly weakened the contamination of micro particles, and the smoke exhaust of health gases such as nitrogen oxides has also been suppressed.
The efficiency index is an important standard for measuring the efficiency of hot-water boilers. The following section looks at some factors of efficiency indexes of pressure hot-water boilers. According to the analysis of relevant departments, the heat loss of hot water boiler comes from two parts: the non-standard air combustion ratio and the waste of exhaust heat.
In order to reduce the waste of exhaust heat, the tail gas heat recovery equipment can be installed at the tail of hot water boiler, or a more first-class system condensing boiler should be operated. Air combustion full ratio non-standard non-compliance inquiry summary: ordinary hot-water boiler selection of ejector type burner, the formation of air-fuel ratio can not be flexibly adjusted.
Most of the hot water boilers choose mechanical forced draft burners, which lead to the nonstandard air-fuel ratio. The nonstandard air-fuel ratio includes two cases: when there is too much air, there will be infinite excessive cold air heat conduction, which will lead to the rise of hot-water boiler operation cost and the low efficiency index of hot-water boiler; When the air is not up to the standard, there will be insufficient combustion state, resulting in low efficiency index of hot water boiler.
Keywords: Qingdao boiler