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Address: Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China
Contact name:Sandy Chen
Zhangjiagang HuaDong Boiler Co., Ltd. |
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Stainless steel export to Covanta Energy company electrostatic
precipitator HRSG recoverying system
Product Description
1.In boiler,economizers are heat exchange devices that heat fluids,usually water,up to but not normally beyond the boiling point of that fluid.
2.Economizer are so named because they can make use of the enthalpy in fluid streams that are hot,but not enough to be used in a boiler,thereby recovering more useful enthalpy and improving the boiler's efficiency.
3.They are a device fitted to a boiler which saves energy by using the exhaust gases from the boler to preheat the cold water used the fill it(the feed water)
Technical specifications
1.Material Structure
Consists of a serious of spiral fin tubes, the headers of inlet and
outlet, bend, frame and other auxiliaries.
2.Structure Arrangement
In line / staggered arrangement.
Characteristics
1.This type of economizer can largely develop the heat exchanging area than the bare economizer to add the heat transfer area, reduce the volume, compact structure and reduce the number of elbow and welding to make less leakage and add the heat transfer efficiency.
2.Not easy to collect dust and the fume pass through the fin tube to form the boundary layer to occur the vortex to make less chance for the fly ash particle to touch the tube wall.
3.Widely temperature range, high pressure limit.
4.Durable strong impact, reliable operation.
5.less fume resistance, reduced abrasion and long working life.
6.Beautiful appearance, simple fabrication process.
7.Diverse layout.
8·Ease of installation, ease of construction.
9·A wide range of working pressure .
Vapor-Compression Refrigeration
1.Another use of the term occurs in industrial refrigeration,specifically vapor-compression refrigeration.
2.Normally,the economizer concept is applied when a particular design or feature on the refrigeration cycle,allows a reduction either in the amount of energy used from the power grid;in the size of the components used to produce refrigeration,or both.
3.For example,for a walk-in freezer that is kept at -20ºF(-29ºC),the main refrigeration components would include;an evaporator coil,fans to blow air over the coil and around the box,an air-cooled condensing unit sited outdoors,and valves and piping.
4.The condensing unit would include a compressor and a coil and fans to exchange heat with the ambient air.
Parameters
| Name | Economizer |
| specifications of finned tube | unit(mm) |
| Bare pipe(od) | 25-165 |
| bare pipe(thick) | 2-8 |
| finned thicks | 0.6-3.0 |
| finned height | 5-30 |
| finned tube thread pitch | 5-30 |
| finned tube length | ≤12000 |
*Note:HD BOILER can bespoke special type of economizer according to
customer's requirement.
Quality Control
· Impact test and Strength calculation report with applied materials information.
· 100%NDT(non-destructive inspection) report of steel plate, tube and electrode.
· X-ray, γ-ray and liquid penetrant test inspection report (welding seam): to ensure the quality of the entire boiler.
· Hydraulic test report: ensure the standard working pressure and safety.
Raw Material
