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CWNS Series of Oil/Gas-fired Normal-pressure Hot-water Boilers

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Structural Features

●The CWNS series of oil/gas fired normal-pressure hot-water boilers adopt a horizontal, three-pass and fire-tube structure, mainly being composed of a shell, a furnace, a reversing chamber and fire tubes, etc.

●This series adopts a wet-back and three-pass structure, enabling the heating surfaces to be symmetrically arranged so that the expansion of the boiler and the stress borne by the boiler can be reasonable.  

●The second and third passes adopt spirally-corrugated tubes. The reasonable arrangement of the heating surfaces ensures a good water circulation and heat exchange, achieving an ideal heat-transfer effect while greatly improving the heat efficiency of the boilers.

●The combustion chamber adopts a corrugated furnace, effectively reducing the thermal stress of the boiler, significantly improving the safety of the boiler, and greatly improving the functional life of the boiler.

●An expansion tank is arranged at the top of the boiler, and the water level can be controlled automatically. The boiler operates without pressure, achieving a safe and reliable operation so that the tedious procedures of authorization can be greatly simplified.

●This series adopts a globally-famous brand low-NOx burner and an advanced fully-automatic control system, achieving a stable combustion and a convenient, reliable and safe operation of the boiler. The installation period is short so that the boiler can be immediately put into use once the valves & instruments, the water source, the power supply, the fuel pipeline and the discharge pipeline are communicated on the site. 

Applications:

This series is mainly used in colleges, hotels and hospitals for supplying hot water and heating.


Boiler Models

Rate

Thermal

Power

Rated
Working
Pressure

Supply-water

Temperature

Return-

water  

Temperature

Heating Area

Boiler
Heat
Efficiency
Fuel Consumption

Max.  

Transportation

Weight

Max.

Transportation

Overall  

 Dimensions

Light
Diesel
Natural  
Gas
MW
MPa


m2
%
Kg/h
Nm3/h

Ton

mm
CWNS0.35-95/70-YQ

0.35

常压

95

70

18

86

~34.4

~41.2

~2.2

2630×1150×1740

CWNS0.7-95/70-YQ

0.7

常压

95

70

31

90

~63.2

~77.1

~3.7

3720×1700×1930

CWNS1.05-95/70-YQ

1.05

常压

95

70

38

90

~98.5

~118.2

~5

3800×1650×2050

CWNS1.4-95/70-Q

1.4

常压

95

70

50

90

/

~158

~6.2

5100×1800×2700

CWNS2.1-95/70-YQ

2.1

常压

95

70

68

90

~169.5

~233.4

~7

4500×1970×2500

CWNS2.8-95/70-Q

2.8

常压

95

70

 129.7

93.7

/

~303

~8.8

4920×1970×2500

CWNS4.2-95/70-Q

4.2

常压

95

70

 158.9

92

/

~454.5

~12.1

5720×2300×2800

CWNS5.6-95/70-YQ

5.6

常压

95

70

 235

92.5

~505.6

~612.8

~20

6500×2800×3250

CWNS7-95/70-YQ

7

常压

95

70

 293.2

92.4

~632

~766

~22

7300×3000×3400