First, measure the duct changes in the internal gas heating boiler, if a carbon steel pipe, then, once it's expanding crude exceeds 3.5% should replace lost; the steel pipe replacement criteria should be expanding crude exceeds 2.5%, more stringent .
Boiler feed water contains various impurities and the calcium and magnesium ions, the formation of scale down the long run. Scale very low thermal conductivity, when the heating surface fouling, increased thermal resistance, boiler exhaust gas temperature rise, heat losses will increase. In general, the heated junction 1 mm scale, heat losses will increase 2% -4%.
"Environmental protection boiler" is a more general concept, a broad sense, refers to the boiler exhaust emissions, waste emissions and other environmental requirements of the load does not refer to a certain kind of single boiler.
Autumn and winter cold season is heating the peak of the northern city of Tianjin, with the heating period, fog, haze and other inclement weather has cropped up, as also the people a "blue sky" always in a good living environment, inside of Tianjin low-emission coal-fired boilers reform process without delay. To improve the situation of air pollution, Tianjin start the "Blue Sky Project" plans to cooperate with the fast boiler, gas boiler will invest billions of dollars in coal-fired boilers within the city as a clean fuel such as natural gas as raw material.