Architecture Engineering and Science

With the continuous promotion of the coal-to-gas policy in major towns in Beijing and its counties, Hebei, Shandong, and some provinces in Northwestern China, the proportion of household heating in the winter heating market has increased year by year. As one of the main heating equipment, the sales of wall-mounted gas boilers are also increasing year by year. Due to the concentration of installations in cities, the NO_x and CO emissions generated by the operation of a huge number of gas-fired wall-mounted boilers gradually appear to have an impact on the environment. This article will measure NO_x and CO in the emissions of common gas wall-mounted boilers on the market (including conventional atmospheric gas wall-mounted boilers, low-NO_x wall-mounted boilers, secondary condensation low-NO_x wall-mounted boilers and fully premixed gas wall-mounted boilers). Through the quantitative analysis and comparison of the data, a reference is given to the selection of the gas wall-mounted boiler.