A large number of exhaust gas which temperature is above 200 ℃ from the domestic boiler to be put into the atmosphere., so it waste a large number of non-renewable energy and change the atmospheric ambient temperature.

The devices use heat pipe technology, the heat from the flue gas passed through the heat pipe to the combustion air. Exhaust gas temperature is reduced to the proper temperature, combustion air is heated into the furnace combustion, improved combustion efficiency, energy conservation and reduce pollution.

The right picture shows the air preheater of a 1900kw coal-fired steam boiler which is be manufactured by our company.