---
title: "Collection Hood"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:COLLECTION_HOOD"
  data_integrity_hash: "5cafac3832d540a8e6cf93b5d01115c8"
  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:COLLECTION_HOOD"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/collection-hood.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/collection-hood"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 m/s capture velocity at hood face"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.25
    unit: "m"
    consequence: "Boundary layer separation due to insufficient pressure differential (ΔP &lt; 25 Pa) between hood interior and ambient environment, causing particle trajectory deviation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Material fatigue from 10⁷-10⁸ cyclic pressure fluctuations at 0.1-1.0 Hz"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Finite element analysis-optimized reinforcement ribs at stress concentration points with 316L stainless steel (yield strength 290 MPa)"
  - node_2:
      trigger: "Electrostatic discharge accumulation exceeding 10 kV/m in combustible dust environments"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Intrinsically safe grounding system with &lt;1.0 Ω resistance and explosion venting panels rated for 0.1 bar overpressure"
bom_nodes:
  housing-body:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING_BODY"
    interface_type: "physical-logic-coupled"
  flange:
    type: "component"
    urn: "URN:CNFX:ME:FLANGE"
    interface_type: "physical-logic-coupled"
  baffles-dampers:
    type: "component"
    urn: "URN:CNFX:ME:BAFFLES_DAMPERS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 14644-1:2015 CLEANROOMS AND ASSOCIATED CONTROLLED ENVIRONMENTS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASHRAE 110-2016 METHOD OF TESTING PERFORMANCE OF LABORATORY FUME HOODS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 14175-2:2016 FUME CUPBOARDS - SAFETY AND PERFORMANCE REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/collection-hood.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "4e946f78eb9f92e6d74dadf5c801bb4304fa714f4d787cb1d1a03bd54dcab396"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Collection Hood

## 1. Technical Definition
A component of dust handling systems that captures airborne dust particles at their source.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 m/s capture velocity at hood face**. Failure boundary: **Capture velocity drops below 0.25 m/s at source point**, Mechanism: **Boundary layer separation due to insufficient pressure differential (ΔP &lt; 25 Pa) between hood interior and ambient environment, causing particle trajectory deviation**.

### 2.1 Analytical Physics Model
Governed by the **LMTD Logarithmic Mean Temperature Difference**:

> **Primary Equation**: $Q = U \cdot A \cdot \Delta T_{lm}$  
> **Engineering Impact**: Sizing validation for pasteurization and cooling tunnels.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| U | Heat Transfer Coeff | Engineering Constant |
| A | Area | Engineering Constant |
| \Delta T_{lm} | LMTD | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Material fatigue from 10⁷-10⁸ cyclic pressure fluctuations at 0.1-1.0 Hz | 8 | Housing crack propagation exceeding 2.5 mm length | Finite element analysis-optimized reinforcement ribs at stress concentration points with 316L stainless steel (yield strength 290 MPa) |
| Electrostatic discharge accumulation exceeding 10 kV/m in combustible dust environments | 8 | Deflagration propagation through ductwork at 300-500 m/s flame speed | Intrinsically safe grounding system with &lt;1.0 Ω resistance and explosion venting panels rated for 0.1 bar overpressure |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Dust Collector**, **Industrial Fan**, **Ductwork System**  
**Downstream Applications**: Clean Air, Collected Dust Material, Compliant Workspace Environment  

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

### Q: What materials are available for the collection hood?
**A**: Our collection hoods are manufactured in galvanized steel, stainless steel, and polypropylene to suit different industrial environments and material compatibility requirements.

### Q: What components are included in the collection hood BOM?
**A**: The bill of materials includes baffles/dampers for airflow control, a flange for secure connection to ductwork, and the housing/body that forms the main capture structure.

### Q: How does a collection hood improve dust handling system efficiency?
**A**: By capturing airborne dust particles directly at their source, collection hoods prevent dust dispersion, reduce system load, improve air quality, and enhance overall dust collection efficiency.

## 6. Manufacturing Compliance
- ISO 14644-1:2015 CLEANROOMS AND ASSOCIATED CONTROLLED ENVIRONMENTS
- ANSI/ASHRAE 110-2016 METHOD OF TESTING PERFORMANCE OF LABORATORY FUME HOODS
- DIN EN 14175-2:2016 FUME CUPBOARDS - SAFETY AND PERFORMANCE REQUIREMENTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Collection Hood](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/collection-hood)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: COLLECTION_HOOD | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 59a2c3ec
