1. Who am I ?
WNS series horizontal internal combustion boiler is classic 3-pass wetback oil/gas fired boiler. After fuel is atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, called 1st pass; the high temperature flue gasses are collected in reversal chamber and then enter 2nd pass, which is grooved tube bundle area through heat convection, air temperature gradually falls and flows to front smoke box and enter 3rd pass, which is done in the smooth tube bundle area, and then through back smoke box lead to chimney and exhausted to the atmosphere.
2. What uniqure features do I have ?
2.1 Long working life
3-pass and wet-back are designed to avoid the damage of back tube sheet from the high temperature smoke.
2.2 Compact desegn
Threaded firetube and corrugated furnace are used to increase the heating area. That allows over 30% of the energy to be absorbed in the furnace. This means a shorter boiler overall. Definitely, it can save your boiler room construction costs.
2.3 Ease of maintenance and control
Everything is up front,adjustable and accessible.
2.4 New type economizer
It is made by finned ND tubes. It is smaller but the heat exchanging area is bigger than normal. By calculation, It can save around 5% fuel.
2.5 Low emissions
Lowering emissions in the ZOZEN-WNS series of boiler involves two key factors: (1) advanced burner solution; (2) the proper sizing of furnace to minimize nitrogen oxides and other contaminants from forming during the combustion process.
2.6 Safety control system
We design the safety interlock system with multiple protection and alarm functions
- Protection program of automatic ignition
- Locking and protection program of operation
- Protection program of extinction
- Protection program of completion
- Protection program of water pumps (pressure loss)
- Protection program of ignition failure
- Protection program of combustion engine malfunction
- Protection program of combustion engine flameout
- Sound-light alarm of high pressure
- Sound-light alarm of high limit water level
- Sound-light alarm of low limit water level
- Sound-light alarm of super-high temperature of hot water
4. Total Integration goes far beyond boilers
Efficiency and quality don't end with our boilers. ZOZEN complete integration produces the most efficient boiler solutions in the world. Completely designed, engineered, manufactured, integrated, and serviced by our team, our systems don't have a single outsourced component to jeopardize compatibility or performance. If you are looking for the best-quality boiler systems with the lowest emissions and highest efficiencies, you are looking for Zozen.
| Model | Rated thermal power(MW) | Rated working pressure(Mpa) | Rated output water temperature(ºC) | Rated feeding water temperature(ºC) |
| WNS0.7-0.7/95/70- Y(Q) | 0.7 | 0.7 | 95 | 70 |
| WNS1.4-0.7/95/70- Y(Q) | 1.4 | 0.7 | 95 | 70 |
| WNS2.1-0.7/95/70- Y(Q) | 2.1 | 0.7 | 95 | 70 |
| WNS2.8-0.7/95/70- Y(Q) | 2.8 | 0.7 | 95 | 70 |
| WNS3.5-0.7/95/70- Y(Q) | 3.5 | 0.7 | 95 | 70 |
| WNS4.2-1.0/115/70- Y(Q) | 4.2 | 1.0 | 115 | 70 |
| WNS5.6-1.0/115/70- Y(Q) | 5.6 | 1.0 | 115 | 70 |
| WNS7-1.0/115/70- Y(Q) | 7 | 1.0 | 115 | 70 |
| WNS10.5-1.0/115/70- Y(Q) | 10.5 | 1.0 | 115 | 70 |
| WNS14-1.0/115/70- Y(Q) | 14 | 1.0 | 115 | 70 |
From the Zozen Team, we have more than 25 years of experience in manufacturing and exporting.