This article's table of contents introduction:
- Core Specification Analysis
- Likely Fan Type & Configuration
- Key Engineering Considerations for Selection
- Application in a Power Plant for this Flow
- Recommended Supplier Specifications (Outline)
- Common Manufacturers for This Size
- Critical Warning
Based on your request for a “Single Inlet Exhaust 159,606 m³/h Power Plant Fan Blower,” you are describing a high-volume, industrial-grade fan system likely used for Induced Draft (ID), Forced Draft (FD), or Primary Air (PA) applications in a thermal power plant.
Here is a technical breakdown of what this specification implies, common design parameters, and potential applications.
Core Specification Analysis
- Flow Rate: 159,606 m³/h (≈ 93,900 CFM or 44.3 m³/s).
- Scale: This is a medium-to-large power plant fan. It is suitable for a boiler system of approximately 30–50 MW (depending on coal quality and system resistance).
- Single Inlet: Air enters from one side only. This is typical for centrifugal fans. Axial fans in power plants are usually duct-mounted.
- Exhaust: The air is discharged into a duct leading to the boiler (FD/PA fan) or to a chimney/scrubber (ID fan).
Likely Fan Type & Configuration
For this specific flow, the most common configuration is a Centrifugal Fan (not Axial).
| Parameter | Likely Value for 159,606 m³/h |
|---|---|
| Pressure (SP) | 3000 – 6000 Pa (12–24 in.wg) for FD fan; 2000 – 4000 Pa for ID fan. |
| Power | 180 – 350 kW (depending on pressure & efficiency). |
| Blade Type | Backward Inclined (AIRFOIL) – most efficient for clean air. Radial Tip – for erosive fly ash (ID fans). |
| Speed | 980 – 1480 RPM (4-pole or 6-pole motor driven). |
| Drive | V-belt or Direct Coupling (via variable speed coupling or VFD). |
Key Engineering Considerations for Selection
A. Temperature (ID Fan Critical)
- Cold Start: Ambient air (20–40°C).
- Running (ID Fan): Flue gas temperature can reach 140°C – 180°C (sometimes up to 250°C).
- Requirement: CO2 + SO2 resistant bearings, shaft cooling fins, and high-temperature shaft seals. The impeller must be designed for thermal expansion.
B. Erosion Protection (ID Fan)
- Fly ash is highly abrasive.
- Blade Treatment: Hardfacing (e.g., Stellite welding) or ceramic tiles (e.g., ZTA - Zirconia Toughened Alumina).
- Wear Liners: Replaceable plates in the casing scroll.
C. Variable Speed Drive (VSD)
- Power plants require flow control. Dampers are inefficient (30% energy loss).
- Best Solution: A Variable Frequency Drive (VFD) or Hydraulic Coupling (Scoop Coupling) to control the 159,606 m³/h flow precisely while saving energy.
D. Noise & Vibration
- At 159,606 m³/h, noise levels exceed 95 dB(A).
- You will need silencers (splitter type) on both inlet and discharge ducts.
- Mounting requires heavy-duty spring isolators and a rigid steel baseplate.
Application in a Power Plant for this Flow
| Fan Type | Purpose | Estimated Pressure (SP) | Notes |
|---|---|---|---|
| Forced Draft (FD) | Supplies air to the furnace for combustion. | ~3500 Pa | Clean air, moderate efficiency. |
| Induced Draft (ID) | Pulls flue gas out of the boiler and through the ESP/bag filter. | ~4000 Pa | Hot, dusty gas; requires erosion-resistant blades. |
| Primary Air (PA) | Dries and transports coal to the mill. | ~7000 Pa | Higher pressure, smaller rotor size for same flow. |
Recommended Supplier Specifications (Outline)
If you are issuing a purchase request, include these parameters:
Example Specification:
Type: Single Inlet, Double Width (or Single Width) Centrifugal Fan Rated Flow: 159,606 m³/h (at fan inlet) Static Pressure: 4500 Pa (adjust to your duct loss) Operating Temperature: 140°C (for ID) / 40°C (for FD) Density: 0.85 kg/m³ (hot) / 1.2 kg/m³ (cold) Motor Power: 315 kW, 6.6 kV (or 415V/480V) Speed: 1480 RPM Construction: Heavy-duty steel casing (6mm min), wear plates on ID fan, BS/AISI 4140 shaft seals. Accessories: Inlet guard, flexible connection (both sides), drain valve, vibration sensors (2x).
Common Manufacturers for This Size
- Zibo Bailing Centrifugal Fan Co., Ltd. (China)
- Howden (UK/Global)
- TLT-Turbo (Germany)
- Greenheck (for smaller power plants)
- New York Blower (for custom process fans)
Critical Warning
Single Inlet fans have an axial thrust load. For a fan moving 159,606 m³/h, you must specify a double-row spherical roller bearing (or a thrust bearing) at the drive side to handle the unbalanced pressure load. Failure to do so will cause early bearing failure.
Would you like a basic 2D outline drawing or a Bill of Materials (BOM) for this fan size?
