**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.

Email:zhulin@zozen.com

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** 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.

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.

For instance, steam can be assumed to be 350 psia (pounds per square inch absolute), which has a temperature of 432 degrees Fahrenheit. This steam has a corresponding latent heat of 794 btu/lb. If the steam flow is 1,000 pounds per hour, then the total heat input per hour is 794,000 btu.

To establish the actual evaporation by mass, it is first necessary to know the temperature of the feedwater and the pressure of the steam produced, in order to establish how much energy is added to each kg of water. Equation 3.5.2 can then be used to calculate the steam output: Example 3.5.2

Base model - Values represent a 1,000,000 Btu/hour gas-fired, hot-water boiler operated for 1,500 full-load hours per year with a thermal efficiency of 80%. The performance of this standard unit is based on ASHRAE 90.1-2007. Thermal efficiency (E t) - Represents a boiler's energy output divided by energy input as defined by ANSI Z21.13. A boiler's thermal efficiency rating should be used to

Aug 29, 2017· Boiler efficiency is a quantity that indicates the relationship between input energy entering the boiler with output energy produced by the boiler. However, the boiler efficiency calculation can be defined in three ways: Combustion Efficiency; Thermal Efficiency; Fuel-to-Steam Efficiency

Condensate contains a significant amount of sensible heat that can account for about 10% to 30% of the initial heat energy contained in the steam. Feeding the boiler with high-temperature condensate can maximize boiler output because less heat energy is required to turn water into steam.

In order to calculate boiler efficiency by this method, we divide the total energy output of a boiler by total energy input given to the boiler, multiplied by hundred. Calculation of direct efficiency-E= [Q (H-h)/q*GCV]*100. Where, Q= Quantity of steam generated (kg/hr) H= Enthalpy of steam (Kcal/kg) h= Enthalpy of water (kcal/kg)

To arrive at a Boiler Size requirement , we have provided some Boiler Efficiency Calculations for you to determine the boiler size you may required. In addition we have provide other programs to determine Boiler Operating Cost, based on Steam losses, which might be happening in your system.

Author: Ajay Kumar Kalva Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.

Online calculator to quickly determine Boiler Efficiency. Includes 53 different calculations. Equations displayed for easy reference.

Mar 17, 2015· Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.

How to Calculate Boiler Heat Input Rate. Depending on its energy source, a boiler may get its heat from the flow of electric current or from burning fuel. Each of these sources offer its own method for calculating the boiler's heat input rate. A separate method, however, works for all boilers. The boiler's

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