---
title: "ID Fan"
industry: "Chemical Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ID_FAN"
  data_integrity_hash: "4149dde3ae359e531e3f227d73573849"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:ID_FAN"
  data_source_uri: "https://cnfx.com/llms/industry/chemical-manufacturing/product/id-fan.md"
  official_resource_url: "https://cnfx.com/industry/chemical-manufacturing/product/id-fan"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-1.2 kPa negative pressure differential, 800-3600 RPM rotational speed, 15-150°C gas temperature range"
    unit: "m³/h"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "MPa"
    consequence: "High-cycle fatigue from resonant vibration at 47-53 Hz natural frequency, abrasive wear from particulate loading exceeding 50 mg/Nm³, thermal expansion mismatch between stainless steel shaft (17.3 μm/m·K) and aluminum housing (23.1 μm/m·K)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Unbalanced impeller mass distribution exceeding 0.5 g·mm/kg imbalance tolerance"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to ISO 1940 G2.5 standard with 0.1 g·mm/kg residual imbalance"
  - node_2:
      trigger: "Condensation formation below acid dew point temperature of 140°C for sulfuric acid"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Maintain gas stream temperature &gt;160°C with electric trace heating and insulation"
bom_nodes:
  impeller:
    type: "part"
    urn: "URN:CNFX:ME:IMPELLER"
    interface_type: "physical-logic-coupled"
  casing-housing:
    type: "component"
    urn: "URN:CNFX:ME:CASING_HOUSING"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  bearings:
    type: "part"
    urn: "URN:CNFX:ME:BEARINGS"
    interface_type: "physical-logic-coupled"
  drive-system-motor-coupling:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_SYSTEM_MOTOR_COUPLING"
    interface_type: "physical-logic-coupled"
  inletoutlet-dampers-or-vanes:
    type: "part"
    urn: "URN:CNFX:ME:INLETOUTLET_DAMPERS_OR_VANES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 5801:2017 - INDUSTRIAL FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN ISO 14694:2005 - INDUSTRIAL FANS - SPECIFICATIONS FOR BALANCE QUALITY AND VIBRATION LEVELS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/chemical-manufacturing/product/id-fan.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "2dd942c40627b6101ecfd98d24f20d7da2f9c10f7745b928cddea6f20e2a60df"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: ID Fan

## 1. Technical Definition
A centrifugal or axial fan used to create negative pressure and draw exhaust gases through an off-gas cleaning system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-1.2 kPa negative pressure differential, 800-3600 RPM rotational speed, 15-150°C gas temperature range**. Failure boundary: **Impeller stress exceeds 250 MPa yield strength of cast aluminum alloy, bearing temperature exceeds 120°C lubricant breakdown point, shaft deflection exceeds 0.15 mm/meter runout tolerance**, Mechanism: **High-cycle fatigue from resonant vibration at 47-53 Hz natural frequency, abrasive wear from particulate loading exceeding 50 mg/Nm³, thermal expansion mismatch between stainless steel shaft (17.3 μm/m·K) and aluminum housing (23.1 μm/m·K)**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Unbalanced impeller mass distribution exceeding 0.5 g·mm/kg imbalance tolerance | 8 | Excessive vibration amplitude &gt;7.1 mm/s RMS causing bearing race spalling | Dynamic balancing to ISO 1940 G2.5 standard with 0.1 g·mm/kg residual imbalance |
| Condensation formation below acid dew point temperature of 140°C for sulfuric acid | 8 | Corrosive pitting attack at rate &gt;0.5 mm/year on carbon steel components | Maintain gas stream temperature &gt;160°C with electric trace heating and insulation |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | m³/h | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Impeller](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/impeller.md) `(Standalone System)`
- [Bearings](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/bearings.md) `(Standalone System)`
- [Drive System (Motor &amp; Coupling)](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drive-system-motor-coupling.md) `(Standalone System)`
- [Inlet/Outlet Dampers or Vanes](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/inletoutlet-dampers-or-vanes.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Dust Collector**, **Scrubber System**, **Exhaust Stack**  
**Downstream Applications**: Purified Exhaust Gases, Processed Chemical Intermediates, Compliant Waste Streams  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are recommended for ID fans handling corrosive gases in chemical plants?
**A**: For corrosive gases in chemical manufacturing, stainless steel ID fans are recommended due to their corrosion resistance. Carbon steel is suitable for non-corrosive applications, while alloy steel offers enhanced durability for specific conditions.

### Q: What are the key components in an ID fan's bill of materials (BOM)?
**A**: The essential BOM components include: impeller for airflow generation, casing/housing for structural integrity, shaft for power transmission, bearings for smooth rotation, drive system (motor &amp; coupling) for operation, and inlet/outlet dampers/vanes for flow control.

### Q: How does an ID fan function in an off-gas cleaning system?
**A**: An ID fan creates negative pressure (vacuum) to draw exhaust gases through the off-gas cleaning system, ensuring proper airflow for effective pollutant removal before safe discharge, maintaining system efficiency and environmental compliance.

## 6. Manufacturing Compliance
- ISO 5801:2017 - INDUSTRIAL FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS
- DIN EN ISO 14694:2005 - INDUSTRIAL FANS - SPECIFICATIONS FOR BALANCE QUALITY AND VIBRATION LEVELS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: ID Fan](https://cnfx.com/industry/chemical-manufacturing/product/id-fan)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **6** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: ID_FAN | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: c84d9bb5
