Energy-efficient boilers, with remarkable energy-saving effect, over 100% of thermal efficiency and significant environmental protection effect, reducing pollution emission Shenneng energy-efficient oil and gas boiler is a condensing boiler which improves the boiler efficiency with reasonably designed heating surface to reduce exhaust gas temperature and allow the water vapor in the flue gas to meet the condensation rate of the design requirement on the research basis of the analysis and summary of the relationship between water vapor condensation rate in flue gas and exhaust gas temperature, the relationship between the condensation rate and efficiency as well as the corrosion rate of the condensate water on different kinds of steels. http://www.wuxishenneng.com