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.
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.
File Size: 1MB Mar 28, 2018· Wa=[Lw+ASH+(1-Ec)-XCaO] Where, Ec is the combustion efficiency expressed as a fraction. 7.2 Heat balance on the basis of higher heating value of coal, HHV (Boiler efficiency calculation by heat loss method) 7.2.1 Outline The combustion heat generated in the furnace is equal to the sum of all heat losses and the enthalpy gain of water/steam in
composition on a mass basis, as determined in the ultimate analysis. Before we can proceed with combustion calculations it is necessary to convert these data to an effective molar composition. Example 2.2 Coal Composition Consider a Pittsburgh seam coal that contains 77.2% C, 5.2% H, 1.2% N, 2.6% S, 5.9% 0,and 7.9% ash by weight.
The time required to heat 75 kg of water (c p = 4.2 kJ/kg o C) from temperature 20 o C to 75 o C with steam produced from a boiler with capacity 200 kW (kJ/s) can be calculated by transforming eq. 2 to t = m c p dT / q = (75 kg) (4.2 kJ/kg o C) ((75 o C) - (20 o C)) / (200 kJ/s) = 86 s
Jun 01, 2017· As efficiency of furnace is 85–90% that means ratio of heat consumed to form steam by heat given by coal is 0.85–0.90. so find the heat that is given by coal. Then equate that heat that is heat given by coal= (mass of coal)*GCV. You have value of heat and GCV. You will get mass.
Steam Mass Flow = Feedwater Mass Flow - Feedwater Mass Flow * Blowdown Rate; Feedwater Mass Flow = Steam Mass Flow / [ 1 - Blowdown Rate] [ Feedwater Mass Flow = 31.6 klb/hr = 30.2 klb/hr / ( 1 - 0.044 ) ] Using the Steam Property Calculator, properties are determined using Deaerator Pressure and Quality = 0 (Saturated Liquid).
This specific heat calculator is a tool that determines the heat capacity of a heated or a cooled sample. Specific heat is just the amount of thermal energy you need to supply to a sample weighing 1 kg to increase its temperature by 1 K. Read on to learn how to apply the heat capacity formula correctly to obtain a valid result.
3. boiler Heat content of boiler blow- down water. Heat in Fuel Heat in atomising steam Sensible heat in fuel INPUT Pulveriser or crusher power Boiler Circulating pump power Primary air fan power Recirculating gas fan power Heat supplied by moisture in entering air. Heat in Final superheater steam.
Modern Rankine cycle, adopted in coal fired power plants, have efficiencies that vary from 32 % to 42 %. This depends mainly on the steam parameters. Higher steam perssure and temperatures in the range of 600 ° C and 230 bar have efficiencies around 42 %. We assume a value of 38 % for our case.
and water entering the boiler is assumed at 25oC. The flue gas leaves the boiler at 300oC (all the water formed will be vapour). In addition, a substantial amount of heat is also lost through the boiler wall and other uncounted sources. Calculate the flue gas composition (both dry and wet basis) leaving a boiler.
Heat Loss · Saturated Steam · Steam Turbine · Preferences · Header Steam Mass Flow = Feedwater Mass Flow - Feedwater Mass Flow * Blowdown Rate; Feedwater Mass Flow = Steam Mass Flow / [ 1 - Blowdown Rate] [ Feedwater Mass Flow = 61.9 klb/hr = 60.8 klb/hr / ( 1 - 0.018 ) ] Using the Steam Property Calculator, properties are determined using Deaerator Pressure and Quality = 0 (Saturated Liquid).
compared with the flue gas volume per unit mass. The flue gas volume is derived from the combustible material in the fuel - and only the combustible material contributes to the calorific value. When the flue gas volume, per unit mass, is divided by the heating value, per unit mass, the influence of the inert fuel components is therefore largely
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