Steam boilers are generally used in schools to provide steam for dormitory laundry rooms and canteens. In response to environmental protection policies such as “change from coal to gas”, the college decided to eliminate traditional coal-fired boilers and conducted an open tender for the purchase of gas-fired boilers. The WNS series gas-fired boiler of Zozen Boilers successfully won the bid with its safety and environmental protection features. The school is an important base for talent training, and it pays particular attention to the safety of the gas boiler to be introduced. The WNS condensing gas boiler (WNS6-1.25-Q) that Zozen Boilers won the bid this time has the characteristics of fully automatic and safe operation. The combustion, water level, temperature and steam pressure can be automatically adjusted and protected. In addition, the furnace adopts a large-diameter corrugated furnace, with sufficient fuel combustion, thermal efficiency can be as high as 98%, and NOx emission can be as low as 30mg/Nm3. This gas fired boiler fully meets the college’s requirements for safety and environmental protection.

Customer feedback: Zozen Boilers is indeed a trustworthy company. It not only provides gas fired boilers that are safe, reliable, efficient, and environmentally friendly, but also provides very considerate services. From the beginning of installation to successful operation, there are dedicated personnel to guide the whole process; at the same time, to ensure the long-term performance of the later boilers For stable operation, Zozen Boilers also provided specific training to our furnace workers.

This series of gas-fired steam boilers adopts a full-corrugated furnace, which enhances the flue gas disturbance and effectively improves the heat transfer effect. Threaded flue tube is a high-efficiency heat transfer element studied by Zozen Boilers for many years. After continuous optimization, it can effectively absorb flame energy. With the additional finned tube condenser at the end of the flue, the boiler thermal efficiency can be as high as 98% while reducing the exhaust gas temperature. above. In addition, the fully automatic intelligent control and safety detection devices configured by ZOZEN’S ensure the safe operation of the boiler and provide a stable and reliable heat source for the efficient operation of the boiler.

In the exhaust heat loss of this type of boiler, in addition to the sensible heat of the flue gas, the water vapor also takes away a large amount of latent heat of vaporization. If all or part of the water vapor in the flue gas is condensed by reducing the exhaust gas temperature, and the latent heat released during the condensation process is recycled, the effective heat utilization of the boiler will increase, which will significantly improve the thermal efficiency of the boiler. The WNS condensing gas boiler aims at key technical factors such as the relationship between the condensation rate of water vapor in the flue gas and the exhaust gas temperature, the relationship between the condensation rate and thermal efficiency, and the corrosion rate of condensed water on different steel grades, and reduces the exhaust temperature through reasonable design of the heating surface, to ensure that the water vapor in the flue gas reaches the condensation rate required by the design, so that the thermal efficiency of the boiler is greatly improved. Due to the large-scale furnace structure and flue gas recirculation technology, for gas-fired boilers, ultra-low nitrogen emissions can be achieved, NOX emissions ≤ 30mg/Nm3.