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causes of water tube boiler low efficirncy

Product Thermal Capacity: 1 - 20 t/h

Working Pressure: 0.7 - 2 Mpa

Available Fuel: Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.

Available Industries: Heat supplying, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc.

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Introduction of WNS gas / oil fired steam boiler:

WNS series horizontal internal combustion boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.

Technical advantages:

1. Digitized manufacture
The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine and looks tidy and beautiful.

2.Easy operation and maintenance
Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.

3. Longer working life
Smoke tube and tube sheet connection is expanded first to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boilers working life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.
Fin tube us ND steel or stainless-steel material which avoid low temperature corrosion.
Inspection procedure point is set up to guarantee the sequence of expanding and welding, avoid cracking of the tube sheet holes.

4. Less fuel consumption
High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ to control heat lost.
Sufficient steam storage room and heating area makes boiler to generate high quality steam and high thermal power.
Condenser is added to reuse the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce emission temperature, which can increase the thermal efficiency above 98% and save operating cost.

A Review of the Common Causes of Boiler Failure in t

Fatigue accounts for 80% of the failures investigated in fire tube boilers and 28% in water tube boilers. Significantly in the non-sugar, watertube section this rises to 36% but drops to 17% for sugar boilers. However despite its low incidence in the sugar industry, it is worth a close look at the

Common Boiler Problems, Part 1: Low Water Conditio

The only thing that allows a boiler to withstand these furnace temperatures is the presence of water in or around (depending on whether the boiler is a fire tube or a water tube design) the pressure parts at all times that a fire is present. Low water conditions will literally melt the steel pressure parts.

Boiler Safety and Role of Low Water Leve

Most of the boiler failures can be attributed to low water conditions. For safe boiler operations this must be kept under check. Low-water level conditions in the boiler occur when the water in the boiler drum falls below the low water level mark. Such conditions have the potential to severely damage the boiler.

Why are all high pressure boilers water tubes? - Quo

Mar 26, 2018· In water tube Boiler water flows in tube and Flue gasses flow around the water tubes. As compared to fire tube Boilers, water tube Boilers are used for high pressure application because 1. The heat transfer area is more in water tube boilers as Wa

What Causes Low Boiler Pressure? Find out & Fix | Boiler Gui

What causes low boiler pressure? There are two very common causes for losing boiler pressure: water leaks and bleeding radiators. Water leaks. A leak from your pipes, boiler or radiators can often be hard to spot but take a look around your home for any damp patches and water.

How to Destroy a Boiler -- Part

Dysfunctional low-water trips should be a "no go" item and should be corrected before the boiler is fired. Poor Water Treatment. Boiler feedwater is treated to protect it from two basic problems: the buildup of solid deposits on the interior or water side of the tubes, and corrosion. Prevention of scaling or buildup - The need for proper

Water quality with high-efficiency boile

Steve Wieland is the east coast regional manager for NTI Boilers. NTI is a leading manufacturer of low mass high efficiency condensing gas boilers. Steve has this to say about boiler system water quality: “I always thought the need for cleaning and treating boiler water was an urban myth, until it started happening in my territory.

Chapter 14 - Boiler System Failures | SU

Author: شادى غازى Although there are many causes of low boiler water pH, it most frequently occurs when brackish water is used for condenser cooling. Small quantities of magnesium chloride, in particular, have caused extremely low pH excursions, requiring very close supervision and detection of …

How to improve the efficiency of water tube boil

May 10, 2017· Boiler Blow Down Control: Removal of water from a boiler Used for controlling boiler water parameters within prescribed limits Also used to remove suspended solids present in the system Required Blowdown is the ratio of measured concentration of the selected chemical in the feed water to the measured concentration of the same chemical in the

Why Should a Boiler Not Run Low on Water? | Home Guid

Why is a water tube boiler more efficient?May 07, 2019What is the reason for keeping a boiler feed water pHAug 05, 2018What should you do if a boiler shows a high water level alarm?Jul 21, 2018What causes boiler tube leakage?Jul 29, 2017See more results Why Should a Boiler Not Run Low on Water?. A boiler depends on several different control and monitoring systems to ensure safe operation. One such system monitors the boiler water level and acts

Tube Failures in High Pressure Boilers - Bright H

There are twenty-two primary reasons for tube failures in a boiler, which can be classified under six major groups. They can be analyzed and corrective and preventive action can taken. Good operating and maintenance practice reduces tube failures. Tube failures during the initial operation period, the normal operation period, and after ten to fifteen years operation show different trends.

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