Gas(oil) fired Hot Water Boilers

Gas(oil) fired Hot Water Boilers

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  • Power: 0.7 – 14 MW
  • Working Pressure: 0.7 – 1.25 MPa
  • Applicable Fuels: Gaseous fuels such as natural gas, coke oven gas, biogas, etc.; Liquid fuels such as diesel oil, heavy oil, light oil, residual oil, etc.
  • Application Industries: Central heating, hospitals, hotels, schools, etc.
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Product Introduction

The WNS Series Horizontal Internal Combustion Boiler is a shell-type three-pass wet-back oil/gas-fired boiler. The boiler operates automatically. After the fuel is atomized by the burner, the formed flame fills the full-wave furnace corrugated drum and transfers radiant heat through the drum wall—this constitutes the first pass. The high-temperature flue gas generated by combustion gathers in the re-burning chamber, turns to enter the second pass (the threaded smoke tube bundle area), and undergoes convective heat exchange. As the flue gas temperature gradually decreases, it reaches the front smoke box, where it turns again to enter the third pass (the plain tube bundle area). Subsequently, it flows through the rear smoke box into a condensing energy saver and chimney, before finally discharging into the atmosphere. This series of products features safe and reliable operation, high efficiency, energy-saving and environmental friendliness, easy maintenance, durability, and fully automatic intelligent control

Product Advantages

Expertise Team

Thermal heat combustion power gas turbines steam as coal. Boilers electricity fuel grid plant; engineering efficiency.

High-Quality Products

Thermal heat combustion power gas turbines steam as coal. Boilers electricity fuel grid plant; engineering efficiency.

Cost Savings

Thermal heat combustion power gas turbines steam as coal. Boilers electricity fuel grid plant; engineering efficiency.

Trustworthy

Thermal heat combustion power gas turbines steam as coal. Boilers electricity fuel grid plant; engineering efficiency.

Model parameters

Product Parameters
Product Name Fuel (Gas) Hot Water Boiler – Atmospheric Pressure Fuel (Gas) Hot Water Boiler – Pressure Bearing Product Name
Product Model CWNSN0.35 CWNSN0.7 CWNSN1.05 CWNSN1.4 CWNSN2.1 CWNSN2.8 WNS4.2 WNS5.6 WNS7.0 WNS8.4 WNS10.5 WNS14 Product Model
Output Parameters Rated Thermal Power MW 0.35 0.7 1.05 1.4 2.1 2.8 4.2 5.6 7 8.4 10.5 14 MW Rated Thermal Power Output Parameters
Rated Outlet Water Pressure MPa Normal Pressure 1 1.25 MPa Rated Outlet Water Pressure
Rated Inlet Water Temperature 70(50) 70 Rated Inlet Water Temperature
Rated Outlet Water Temperature 95(60) 95(115) Rated Outlet Water Temperature
Design Parameters Circulating Flow Rate t/h 12(30) 24(60) 36(90) 48(120) 72(180) 96(240) 144(80) 192(107) 240(133) 288(160) 360(200) 480(267) t/h Circulating Flow Rate Design Parameters
Calculated Heat Exchange Area m2 14.5 24.7 37.5 47.3 83.5 98.9 137.3 167.1 212.7 254.1 317.9 417.9 m2 Calculated Heat Exchange Area
Smoke Exhaust Temperature 150 150 161 165 159 154 155 152 156 153 154 148 Smoke Exhaust Temperature
Design Thermal Efficiency % 92.5 92.6 92.7 92.8 92.8 93 93 93 93 93 93 93.1 % Design Thermal Efficiency
Weight Boiler Net Weight t 4 5 5.8 7.4 8 10.8 13.7 18.8 22.3 27.3 36.6 45.7 t Boiler Net Weight Weight
Boiler Full Water Weight t 5 7.2 8 10.4 12.1 16.6 19.9 30.8 36.3 41.3 55.6 69.7 t Boiler Full Water Weight
Boiler Water Capacity t 1 2.2 2.2 3 4.1 5.8 6.2 12 14 14 19 24 t Boiler Water Capacity
Combustion Combustion Mode / Slight Positive Pressure Chamber Combustion / Combustion Mode Combustion
Combustion Regulation Mode / Fully Automatic Two-stage Fire Regulation Fully Automatic Proportional Regulation / Combustion Regulation Mode
Applicable Fuel / Heavy Oil / Diesel / Natural Gas / LPG / City Gas / Applicable Fuel
Fuel Consumption Heavy Oil kg/h 33 66 98.9 131.7 197.5 262.8 394.2 525.6 657.1 788.5 985.6 1312.7 kg/h Heavy Oil Fuel Consumption
Diesel kg/h 31.9 63.7 95.5 127.2 190.8 253.8 380.7 507.6 634.5 761.4 951.8 1267.6 kg/h Diesel
Natural Gas Nm³ 38.7 77.4 115.9 154.4 231.6 308.2 462.3 615 770.5 924.6 1155.7 1539.3 Nm³ Natural Gas
Liquefied Petroleum Gas (LPG) 12.7 25.4 38 50.7 76 101.1 151.7 202.2 252.8 303.4 379.2 505.1 Liquefied Petroleum Gas (LPG)
City Gas 81.3 162.5 243.5 324.3 486.4 647.2 970.8 1294.4 1618 1941.6 2427 3232.5 City Gas
Air Pressure Natural Gas mm             
H2O
200-2000 400-2000 400-2000 700-2000 700-2000 1000-3000 1000-3000 1000-3000 1200-3000 1500-3000 1800-3000 1200-3000 mm             
H2O
Natural Gas Air Pressure
Liquefied Petroleum Gas (LPG) 300-2000 300-2000 300-2000 500-2000 500-2000 1000-3000 1000-3000 1000-3000 1200-3000 1500-3000 1800-3000 1200-3000 Liquefied Petroleum Gas (LPG)
City Gas 300-2000 500-2000 600-2000 1000-2000 1200-2000 1500-3000 1800-3000 1500-3000 1200-3000 1500-3000 2500-3000 1500-3000 City Gas
Product Model CWNSN0.35 CWNSN0.7 CWNSN1.05 CWNSN1.4 CWNSN2.1 CWNSN2.8 WNS4.2 WNS5.6 WNS7.0 WNS8.4 WNS10.5 WNS14 Product Model
Power Supply / 380V-/50Hz / Power Supply
Power Consumption Complete Machine Oil-fired KW 0.75 1.5 2.6 5.4 6.5 9 14.2 22.5 26 43.1 52.1 68 KW Oil-fired Complete Machine Power Consumption
Gas-fired KW 0.75 1.5 2.6 5.4 6.5 9 12 18.5 22 30 37 44 KW Gas-fired
Single Machine Preheater KW 13.1 15.1 24 KW Preheater Single Machine
Fan KW 0.75 1.5 2.6 5.4 6.5 9 12 18.5 22 30 37 44 KW Fan
Maximum Dimension Transportation Size L mm 3200x 3283x 3751x 3750x 4594x 4880x 5610x 6196x 6648x 6900x 3700x 7928x mm L Transportation Size Maximum Dimension
W 1370x 1605x 1735x 1935x 2145x 2395x 2550x 2850x 2940x 3090x 3525x 3630x W
H 1610 1860 1960 2115 2300 1515 2760 2994 3104 3110 3358 3765 H
Transportation Size L mm 3430x 3813x 4291x 4236x 5308x 5960x 6950x 7654x 8106x 8258x 9178x 10560x mm L Transportation Size
W 1725x 2085x 2085x 2060x 2285x 2515x 2690x 3025x 3115x 3240x 3665x 4161x W
H 2235 2616 2716 2985 3240 3495 3849 4190 4300 4580 4770 5174 H
External Interface Water Inlet PN MPa 1.6 MPa PN Water Inlet External Interface
DN mm 50(80) 80(100) 80(100) 100(150) 125(150) 125(200) 150 200 200 200 200 2*200 mm DN
Water Outlet PN MPa 1.6 MPa PN Water Outlet
DN mm 50(80) 80(100) 80(100) 100(150) 125(150) 125(200) 150 200 200 200 200 2*200 mm DN
Oil Supply Port DN Feed mm 13 13 13 13 13 20 20 20 25 25 25 25 mm Feed Oil Supply Port DN
Return mm 13 13 13 13 13 20 20 20 25 25 25 25 mm Return
Air Supply Port DN DN mm Depends on Air Supply Pressure mm DN Air Supply Port
Manual Blowdown Port PN MPa 1.6 MPa PN Manual Blowdown Port
DN mm 40 40 40 50 50 2*50 2*50 2*50 3*50 3*50 3*50 3*50 mm DN
Safety Valve Interface PN MPa 1.6 MPa PN Safety Valve Interface
DN mm 40 50 80 80 2*80 2*80 2*80 2*100 2*100 2*100 2*100 2*150 mm DN
Safety Valve Vent PN mm 50 65 100 100 2*100 2*100 2*100 2*125 2*125 2*125 2*125 2*175 mm PN Safety Valve Vent
Chimney Inner Diameter (Width*Length) mm 273 273 273 309 300*600 400*500 450*640 450*850 450*850 400*1100 500*1100 500*1300 mm Chimney Inner Diameter (Width*Length)
Product Model CWNSN0.35 CWNSN0.7 CWNSN1.05 CWNSN1.4 CWNSN2.1 CWNSN2.8 WNS4.2 WNS5.6 WNS7.0 WNS8.4 WNS10.5 WNS14 Product Model
Product Name Fuel (Gas) Hot Water Boiler – Atmospheric Pressure Fuel (Gas) Hot Water Boiler – Pressure Bearing Product Name
Note 1: The models in this table are conventional models, please contact us for other specifications and models.
Note 2: All the above values are calculated based on the standard of natural gas low heating value 8400kcal/Nm and diesel low heating value 10250kcal/kg.
Note 3: For the need of continuous improvement, our company reserves the right to modify the specifications and parameters. The above parameters are for reference only, please subject to the final drawings.
Note 4: Conventional configuration power supply conditions: 380V 50Hz three-phase five-wire, if there is any difference, please put forward in advance.

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Company Introduction

UGJP Thermal Energy Solutions Co., Limited

 

UGJP Thermal Energy Solutions Co., Limited is an international sales and engineering solutions provider specializing in industrial heating equipment, including thermal oil heaters, boilers, valves, and integrated thermal systems.

Registered in Hong Kong, UGJP focuses on delivering reliable and cost-effective thermal energy solutions to global markets, with strong emphasis on Central Asia, the Middle East, and other emerging industrial regions.

Our core product — thermal oil heater (thermal oil boiler) — is widely used in asphalt mixing plants, chemical processing, textile production, wood drying, and various industrial heating applications. We provide customized solutions with capacities ranging from 100kW to 10500kW, supporting multiple fuel types such as natural gas, diesel, and heavy oil.

We cooperate with qualified manufacturing partners and integrate high-quality components, including internationally recognized burner brands such as Riello, to ensure stable performance, high efficiency, and long service life.

Our Strengths:

  • Fast quotation & technical proposal within 12 hours

  • Project-oriented customization and system integration

  • Export experience in Kazakhstan and Central Asia

  • Skid-mounted / containerized solutions for easy installation

  • Professional communication in English and Russian

UGJP is committed to helping industrial clients achieve stable operation, improve energy efficiency, and optimize long-term heating performance.

 

Company Introduction

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