Description
CWNS Oil/Gas Fired Hot Water Boiler
The AIX CWNS Series Oil/Gas Fired Hot Water Boiler, manufactured by AIX Boiler, a Chinese A-grade producer since 1976, is a horizontal, fire-tube boiler using vacuum phase-change technology to produce hot water for industrial and commercial applications. This technology ensures high thermal efficiency (up to 96%) by leveraging phase-change heat transfer, reducing fuel consumption. The boiler’s compact, fully automatic design simplifies installation and operation, with low NOx emissions meeting stringent environmental standards. Equipped with advanced burners and safety features, it’s ideal for industries like hospitality, textiles, and food processing. AIX CWNS boilers offer durability, low maintenance, and eco-friendly performance, making them a reliable heating solution.
Inquiry Now
Product Description
AIXBOILER, a leading A-GRADE boiler manufacturer in China with over 45 years of expertise since 1978, presents the CWNS series horizontal oil/gas fired hot water boilers. This atmospheric or low-pressure three-pass fire tube design provides high efficiency, stable hot water supply, and easy operation for fuels like natural gas, LPG, diesel, and heavy oil.
Produced in our state-of-the-art facility in Taikang Industrial Park, Zhoukou City, Henan Province—the renowned “Hometown of Boilers”—the CWNS series features a corrugated furnace for thermal expansion resistance, wet-back structure to avoid high-temperature damage, and advanced imported burners for clean combustion. Ideal for heating applications in hotels, schools, hospitals, greenhouses, district heating, and industrial processes requiring hot water below 100°C (atmospheric) or up to 130°C (pressurized).
Focused on sustainability, AIXBOILER CWNS boilers incorporate low-NOx burners and optional economizers for enhanced efficiency and reduced emissions, serving clients in over 80 countries.
Key Features and Benefits
- High Thermal Efficiency — Optimized three-pass design maximizes heat absorption.
- Safe Atmospheric Operation — Open system prevents pressure risks for many applications.
- Fuel Flexibility — Compatible with oil, gas, or dual-fuel setups.
- Easy Installation & Maintenance — Packaged unit with quick connections.
- Low Emissions — Advanced combustion technology meets environmental standards.
- Reliable Performance — Robust construction for long service life.
Technical Parameters
The table below outlines typical specifications for AIXBOILER CWNS oil/gas fired hot water boilers (custom options available):
| Parameter | Specification Range | Notes / Standard Models |
|---|---|---|
| Rated Thermal Power | 0.35 MW – 14 MW (0.5 – 20 million kcal/h) | Common: 0.7 – 7 MW |
| Rated Working Pressure | Atmospheric (0 MPa) or 0.4 – 1.0 MPa | Atmospheric for open systems |
| Outlet/Inlet Water Temperature | 95°C / 70°C (adjustable up to 130°C) | For pressurized models |
| Thermal Efficiency | 90% – 95% (up to 98% with economizer) | High with threaded tubes |
| Fuel Type | Natural Gas, LPG, Diesel, Heavy Oil | Dual-fuel options available |
| Furnace Design | Corrugated furnace + threaded fire tubes | Three-pass wet-back |
| Burner Brand | Riello, Baltur, Weishaupt, Ecostar | Low-NOx configurations |
| Control System | PLC + Touch Screen (Siemens/Delta) | Automatic temperature regulation |
| Circulating Water Volume | 10 – 300 m³/h | Matched circulation pumps |
| Dimensions (approx.) | Varies (e.g., 3m – 10m length) | Horizontal compact layout |
| Weight (dry) | 5 tons – 40 tons | Depending on power |
| Emissions | NOx ≤ 80 mg/Nm³ (low-NOx ≤ 30 mg) | Environmentally compliant |
These parameters guarantee energy-efficient, stable hot water supply.
Additional views of CWNS boiler internals and installations:
Specifications
| Model | Rated Power (MW) | Working Pressure (MPa) | Efficiency (%) | Fuel consumption | Weight (kg) | ||
| Light Oil (kg/h) | LNG (Nm3/H) | CG (Nm3/H) | |||||
| CWNS 0.35-85/65-Y(Q) | 0.35 | 1.0 | >90% | 32.5 | 39.3 | 83.6 | 1280 |
| CWNS 0.48-85/65-Y(Q) | 0.48 | 1.0 | >90% | 44.5 | 54 | 114.7 | 1550 |
| CWNS 0.58-85/65-Y(Q) | 0.58 | 1.0 | >90% | 53.8 | 65.2 | 138.6 | 1900 |
| CWNS0.7-85/65-Y(Q)0.7 | 0.7 | 1.0 | >90% | 64.9 | 78.7 | 167.2 | 2100 |
| CWNS1.05-85/65-Y(Q) | 1.05 | 1.0 | >90% | 97.4 | 118 | 250.8 | 2900 |
| CWNS1.4-85/65-Y(Q) | 1.4 | 1.0 | >90% | 129.9 | 157.4 | 334.4 | 3750 |
| CWNS1.75-85/65-Y(Q) | 1.75 | 1.0 | >90% | 162.4 | 196.7 | 418.1 | 3950 |
| CWNS2.1-85/65-Y(Q) | 2.1 | 1.0 | >90% | 334.4 | 236 | 501.7 | 4950 |
| Note: 1. The hot value of LNG: 8500kal/Nm3, hot value of light oil: 10300kal/Nm3, hot value of the city coal gas: 4000kal/Nm3
2. Parameter is for reference, if any changes, should follow the actual drawing. |
|||||||