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draft system in boiler

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.

Draft Regulators - Barometric Dampers: A Guide

Author: Siloba Engineering The barometric damper has not been properly adjusted or system draft has never been measured. Just installing a barometric damper without adjusting it to the requirements of the heater, chimney and site is an inadequate job. Field Controls points out, for oil fired heating appliances the system cannot be properly adjusted "by eye".:

SIGNIFICANCE OF DRAFTS IN STEAM-BOILER PRACTI

THE SIGNIFICANCE OF DRAFTS IN STEAM-BOILER PRACTICE. By WALTER T. RAY and HENRY KREISINGER. INTRODUCTION. This preliminary bulletin is the first of a series of two or three on the significance of drafts in steam-boiler practice, the succeeding bulletins to be along the same lines but of a more advanced char­ acter.

Draft - Combustion Technolo

A draft control in location C would not provide for sufficient draft control of each individual boiler. When common venting residential fan assist (80%) furnaces/boilers with atmospheric hot water tanks (as is allowed by many manufacturers), great care must be taken to insure the common vent functions under the wide variety of operating conditions.

Sequenced Draft Control System | Hurst Boil

Sequenced draft control systems are used to maintain predictable and reliable flue gas pressures at the boiler’s outlet. Hurst Boiler has been designated as an Essential Provider and …

Exhaust Draft Control | CleanBoiler.o

Author: Walter T. Ray, Henry Kreisinger Exhaust Draft Control Introduction. Boilers must maintain a proper flue draft for efficient combustion; too little draft can result in condensation, CO formation, flue gas spillage, and soot formation. Too much draft results in lost thermal energy from the boiler and higher electrical usage by the vent fan.

Vent Control Systems – US Draft

VCS ‐ Vent Control System The Vent Control System (VCS) maintains a constant negative pressure in the exhaust common manifold or individual chimney/vent. Designed with EC-Flow Technology™, the VCS takes advantage of US Draft Co. bi-directional pressure transducer and proprietary PID technology to rapidly respond to varying manifold or individual system pressure on Category I, II,

Thermal Power Plants: What is a negative DRAFT? - Quo

Oct 24, 2017· Draft is a very low pressure, often in the units of mmWC (Millimeters of water column), maintained in a closed atmosphere or an enclosed body. In a thermal power plant, the Boiler or Steam Generator is a Closed Body, the ducts, the ESP and the Chi

Connector Draft System - US Draft Co – US DRAFT

Combustion Testing Procedures · NOx · Incomplete Combustion · Perfect Combustion Connector Draft System usdraftcoadmin 2018-08-21T23:24:39+00:00. CDS – Connector Draft System It also serves to protect the boiler from flue gas recirculation when used in a common vent system. The CDS meets all requirements for the National & International Fuel Gas Codes and the Uniform & International Mechanical Codes.

Draft Systems - Exam 10 Flashcards | Quizl

the amount of draft produced in a natural draft system depends on the ___ height of the chimney boilers can be equipped with ___ to reduce the heat loss from the gases of combustion going to the chimney

Furnaces and Boilers | Department of Ener

File Size: 1MB Specify a sealed combustion furnace or boiler, which will bring outside air directly into the burner and exhaust flue gases (combustion products) directly to the outside, without the need for a draft hood or damper. Furnaces and boilers that are not sealed-combustion units draw heated air into the unit for combustion and then send that air up

System 2000: Hot Water Boiler | Low Mass Boile

System 2000 has better technology for bigger savings than boilers with similar ratings, up to 38% over other new boilers and even more over older boilers. A heavy cast iron boiler takes a lot of energy just to heat the boiler itself and when the burner shuts off, all that energy starts to slip away.

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zhulin@zozen.com

No. 76, Xin Da Road, Zhou tie Town, Yixing, Wuxi, China

0086-510-68530066, +86-13506151292

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