Industrial Boilers
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This page explains how Economizer is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A heat exchanger component in industrial boilers that preheats feedwater using waste heat from flue gases.
Technical details and manufacturing context for Economizer
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Design Temperature | 200–400 °C | Upper limit depends on material gradeGB/T 16507 |
| Heat Transfer Area | 10–200 m² | Select based on boiler capacity and flue gas temperature |
| Tube Material | 20G | Carbon steel for general service; alloy for high temperatureGB 5310 |
| Tube Outer Diameter | 25–51 mm | Common sizes: 25, 32, 38, 42, 51GB/T 3087 |
| Tube Wall Thickness | 3–6 mm | Thicker for higher pressure or corrosion allowanceGB/T 3087 |
| Fin Spacing | 5–15 mm | Tighter spacing increases heat transfer but may clog with ash |
| Fin Height | 10–25 mm | Higher fins increase surface area but add pressure drop |
| Fin Thickness | 0.8–1.5 mm | Thicker for erosion resistance in dusty flue gas |
| Weight | 500–5000 kg | Depends on size and material; affects installation |
| Flue Gas Pressure Drop | 200–800 Pa | Higher drop increases fan power; balance with heat transfer |
| Water Side Pressure Drop | 10–50 kPa | Affects pump head; keep within system limits |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Economizer.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 30 bar (typical), 50 bar (high-pressure designs) |
| flow rate: | 5-500 m³/h (feedwater), flue gas velocity 10-25 m/s |
| temperature: | Up to 600°C (flue gas inlet), 20-250°C (feedwater) |
| slurry concentration: | Not applicable for clean feedwater; limited to <5% solids in flue gas if particulate present |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
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The economizer recovers waste heat from flue gases to preheat boiler feedwater, improving thermal efficiency and reducing fuel consumption.
Common materials include carbon steel, stainless steel, and alloy steel, selected based on operating temperature and corrosion resistance.
Operating pressure is typically 1.0–1.6 MPa, and design temperature ranges from 200–400°C, but these must be verified for the specific model.
Tighter fin spacing increases heat transfer but may clog with ash; proper spacing must be selected based on flue gas conditions.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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