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Welding Spiral Finned Tube Boiler Economizer Savings Calculations High Frequency

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Welding Spiral Finned Tube Boiler Economizer Savings Calculations High Frequency

Country/Region china
City & Province jiangsu
Categories Air-Compressors

Product Details

 

 

Welding Spiral Finned Tube Boiler Economizer Savings Calculations High Frequency

 

 

ASME Standard High Frequency Welding Spiral Finned Tube Boiler Spart Part Economizer

 

Introduction

 

Economizer

 

 ASME standard boiler part H finned tube economizer with ISO certificate is a kind of boiler parts, to have two steel circular symmetry to be welded on fluorescent tubes to form ins positive shape much like letter "H", so called H-fin tube. H finned tube economizer widely used in utility boilers, industrial boilers, marine power, such as the tail of heat exchanger components.

 

 

Material Structure of Boiler H Finned Tube Economizer

Consists of a serious of H fin tubes, the headers of inlet and outlet, bend, frame and other auxiliaries.

Characteristics of Boiler H Finned Tube Economizer

1). Add the heat exchange area and reduce the number of tubes, also increase the fume flow section area to reduce the fume speed and abrasion.

2). H type fin tube can be made to double H type fin tube, high rigidness to fit long tube row.

3). H type fin economizer arranged in line to make the space into many small zones, averaged air flow to reduce the abrasion.

4). With straight channel to gain the best ash-blowing effect.

5). The compact structure to reduce the weight and reduce the manufacturing cost.

 

Specifications

 
DescriptionBoiler economizer
MaterialAlloy steel, Carbon steel, SA210C ,SA213T22, etc.
Material standardASTM, EN or ISO etc.
DimensionCustomization
Weight

Min: 10 ton

Max.:1000 ton

Smelting Process:EF+LF + VD
ProcessMaterial→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection
UT standardASTM A388 or EN10228, etc

Technical specifications

Material Structure
Consists of a serious of spiral fin tubes, the headers of inlet and outlet, bend, frame and other auxiliaries.

Structure Arrangement
In line / staggered arrangement.

Function

 

(1) The economizer is a steam generation system as like a boiler. when the exhaust gas discharge from the engine cylinder through the exhaust valve it goes to the boiler for generate steam by heating of water.

 

(2) After those gas it goes through the economizer the remaining exhaust gas temperature is heated the water in economiser. it help to generate steam, and it is improving the efficiency and save the fuel consumption

 

(3) An economizer uses the waste heat from the boiler exhaust, that would otherwise be lost to atmosphere to (in most cases) preheat the feed water into the boiler.This improves the boiler efficiency and reduces fuel costs.

Variety

 

Utility Boiler Economizer

1HDB produces economizers for utility boilers, which includes boilers fueled by coal, wood, oil, or other solid fuels to produce electricty from the boiler's high pressure steam.
2These economizers are usually located in the back pass of the boiler and oriented with the tubes running horizontally.The boiler feedwater runs through the economizer circuits in the opposite direction of the gas flow (called counterflow).
3Bare tubes are typically utilized in order to minimize ash fouling, but some boiler OEM's design their economizers with finned tubes, either spiral or long finned.
4HDB can produce economizer elements with either bare, spiral finned, or long finned tubes, and if you prefer, re-design your unit to one of the other tube-types. HDB can also fabricate replacement headers for all utility boiler economizers.

 

Package Boiler Economizer

1HDB has unique manufacturing capabilities that the Optimus engineers take full advantage of when designing sulfuric acid plant economizers and superheaters.
2Often this allows the Optimus units to be configured for higher heat transfer efficiencies which results in a reduced surface area requirement and, consequently, a lower-priced product.
3HDB utilizes its on-site capabilities to fin and bend the tubes, machine and fabricate the headers, drill the tubesheets, cut and prep all casing materials, and perform all of the pressure part and casing welds.
4This gives HDB more control of the manufacturing sequence and schedule which has helped us achieve a remarkable record of on-time delivery performance.

 

HRSG Economizer

1Economizers for today's HRSG modules are configured with fintubes that hang vertically. HDB has fabricated economizer coils for virtually all of the HRSG OEM companies and understands the unique features of each.
2In many cases, utilities desire to upgrade their economizers from plain carbon steel to an alloy material to help resist flow accelerated corrosion (FAC) inside the headers and tube bends.
3HDB is a one-stop shop for economizer fabrication because we prep all the materials and perform all of the pressure part and attachment welding, from finning the fintubes, fabricating the headers, and assembling the coil bundle.

*Note:HD BOILER can bespoke special type of economizer according to customer's requirement.

 

Test

1Latest type of 'U' bending machine is used for precision cold bending of tubes.
2Bending is done for all kind of heat exchanger, condenser, economizer, boiler tubes in Stainless Steel Seamless as well as welded.
3Subsequent to 'U' bending tubes are hydro tested & stress relieved if asked for.
4Also mock-up pieces are prepared for determining thickness reduction on the bend portion.
5Dye penetrant testing on the bend portion is done ro detect cracks, flaws or any type of defect.
6Special packing is provided to prevent any damages during transit.
 

 

 

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