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| ขั้นต่ำ: | 1 |
| ราคา: | $300 |
The economizer performs a key function in providing high overall boiler thermal efficiency by recovering low-level energy from flue gas before it's exhausted to the atmosphere. This energy recovery occurs by heating the boiler feedwater.
Economizers are tubular heat transfer surfaces that preheat boiler feed water before it enters the steam drum or furnace surfaces. They reduce operating costs by recovering extra energy from flue gas, resulting in significant fuel savings.
Economizers also reduce the potential for thermal shock and strong water temperature fluctuations as feed water enters the drum or waterwalls. Increasingly stringent environmental regulations limiting nitrogen oxides and sulfur dioxide emissions can affect economizer design.
The gas-side heat transfer coefficient is much less than the water-side coefficient. To compensate, the outer surface of tubes may be finned to increase heat transfer surface area. The ultimate goal of economizer design is to achieve necessary heat transfer at minimum cost, with maximum allowable flue gas velocity being a key design criterion.
| Name (unit) | Specification (mm) |
|---|---|
| Bare pipe (OD) | 25-1650 |
| Bare pipe (Thickness) | 2-40 |
| Fin (Thickness) | 0.6-3.0 |
| Fin (Height) | 5-30 |
| Fin tube thread pitch | 5-30 |
| Fin tube length | ≤12000 |
Material: Carbon Steel, Alloy, Austenitic Steel (Nickel and Chromium or Manganese)
วิดีโอ
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| ขั้นต่ำ: | 1 |
| ราคา: | $300 |
The economizer performs a key function in providing high overall boiler thermal efficiency by recovering low-level energy from flue gas before it's exhausted to the atmosphere. This energy recovery occurs by heating the boiler feedwater.
Economizers are tubular heat transfer surfaces that preheat boiler feed water before it enters the steam drum or furnace surfaces. They reduce operating costs by recovering extra energy from flue gas, resulting in significant fuel savings.
Economizers also reduce the potential for thermal shock and strong water temperature fluctuations as feed water enters the drum or waterwalls. Increasingly stringent environmental regulations limiting nitrogen oxides and sulfur dioxide emissions can affect economizer design.
The gas-side heat transfer coefficient is much less than the water-side coefficient. To compensate, the outer surface of tubes may be finned to increase heat transfer surface area. The ultimate goal of economizer design is to achieve necessary heat transfer at minimum cost, with maximum allowable flue gas velocity being a key design criterion.
| Name (unit) | Specification (mm) |
|---|---|
| Bare pipe (OD) | 25-1650 |
| Bare pipe (Thickness) | 2-40 |
| Fin (Thickness) | 0.6-3.0 |
| Fin (Height) | 5-30 |
| Fin tube thread pitch | 5-30 |
| Fin tube length | ≤12000 |
Material: Carbon Steel, Alloy, Austenitic Steel (Nickel and Chromium or Manganese)
