---
title: "Cooling System (Fan &amp; Heat Sinks)"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:COOLING_SYSTEM_FAN_HEAT_SINKS"
  data_integrity_hash: "9e70dfed13021c0712ae063f95684a09"
  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:COOLING_SYSTEM_FAN_HEAT_SINKS"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/cooling-system-fan-heat-sinks.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/cooling-system-fan-heat-sinks"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-5000 RPM, 20-80°C ambient temperature, 0.5-2.0 m³/min airflow"
    unit: "CFM"
engineering_limits:
  max_safe_operating_point:
    value: 5500
    unit: "RPM"
    consequence: "Lubricant thermal degradation (Arrhenius equation: k=Ae^(-Ea/RT)), electromagnetic force-induced bearing wear (Lorentz force: F=qv×B), aerodynamic flutter at critical Reynolds number (Re&gt;2×10⁵)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrolytic capacitor ESR increase to 0.5Ω at 105°C (Arrhenius acceleration factor α=2 per 10°C rise)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Polymer aluminum capacitors with 5000h MTBF at 125°C, coupled with NTC thermistor feedback loop (β=3950K)"
  - node_2:
      trigger: "Dust accumulation exceeding 15g/m² on heat sink fins reducing thermal conductivity from 205 to 40 W/m·K"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hydrophobic nanocoatings with 110° contact angle, combined with piezoelectric self-cleaning at 32kHz resonance"
bom_nodes:
  axial-fan:
    type: "part"
    urn: "URN:CNFX:ME:AXIAL_FAN"
    interface_type: "physical-logic-coupled"
  aluminum-heat-sink:
    type: "device"
    urn: "URN:CNFX:ME:ALUMINUM_HEAT_SINK"
    interface_type: "physical-logic-coupled"
  thermal-interface-material:
    type: "component"
    urn: "URN:CNFX:ME:THERMAL_INTERFACE_MATERIAL"
    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 12100:2010 (SAFETY OF MACHINERY - GENERAL PRINCIPLES FOR DESIGN - RISK ASSESSMENT AND RISK REDUCTION)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/cooling-system-fan-heat-sinks.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "37288e6e4f3cc8a1033e4b70c9ed2f007fb75f73469d11acab82e00630da2e1c"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Cooling System (Fan &amp; Heat Sinks)

## 1. Technical Definition
A thermal management subsystem within a Power Source Unit that dissipates excess heat to maintain optimal operating temperatures.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-5000 RPM, 20-80°C ambient temperature, 0.5-2.0 m³/min airflow**. Failure boundary: **Bearing seizure at 5500 RPM, motor winding insulation breakdown at 150°C, fan blade resonance at 5200-5400 RPM**, Mechanism: **Lubricant thermal degradation (Arrhenius equation: k=Ae^(-Ea/RT)), electromagnetic force-induced bearing wear (Lorentz force: F=qv×B), aerodynamic flutter at critical Reynolds number (Re&gt;2×10⁵)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Electrolytic capacitor ESR increase to 0.5Ω at 105°C (Arrhenius acceleration factor α=2 per 10°C rise) | 8 | PWM controller voltage ripple exceeding 200mVpp causing motor phase current imbalance | Polymer aluminum capacitors with 5000h MTBF at 125°C, coupled with NTC thermistor feedback loop (β=3950K) |
| Dust accumulation exceeding 15g/m² on heat sink fins reducing thermal conductivity from 205 to 40 W/m·K | 8 | Junction temperature delta-T exceeding 65°C (Tj=Ta+Rθja×Pdiss) | Hydrophobic nanocoatings with 110° contact angle, combined with piezoelectric self-cleaning at 32kHz resonance |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Axial Fan](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/axial-fan.md) `(Standalone System)`
- [Aluminum Heat Sink](https://cnfx.com/llms/industry/custom-aluminum-parts-manufacturing/product/aluminum-heat-sink.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Thermal Interface Material Dispenser**, **Automated Assembly Fixture**, **Thermal Testing Chamber**  
**Downstream Applications**: Power Supply Units, Industrial Inverters, Motor Drives  

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

### Q: What materials are used in this cooling system?
**A**: This cooling system utilizes aluminum alloy heat sinks for efficient heat dissipation, copper components for enhanced thermal conductivity, and durable plastic polymers for structural components and fan housing.

### Q: How does this cooling system maintain optimal operating temperatures?
**A**: The system combines aluminum heat sinks that maximize surface area for heat dissipation with an axial fan that creates airflow to remove excess heat, working together to maintain safe operating temperatures in power source units.

### Q: What is included in the cooling system BOM?
**A**: The bill of materials includes aluminum heat sinks for primary heat dissipation, an axial fan for active cooling, and thermal interface material to ensure optimal heat transfer between components.

## 6. Manufacturing Compliance
- ISO 5801:2017 (INDUSTRIAL FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS)
- DIN EN ISO 12100:2010 (SAFETY OF MACHINERY - GENERAL PRINCIPLES FOR DESIGN - RISK ASSESSMENT AND RISK REDUCTION)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Cooling System (Fan &amp; Heat Sinks)](https://cnfx.com/industry/electrical-equipment-manufacturing/product/cooling-system-fan-heat-sinks)**

### 🌐 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**: COOLING_SYSTEM_FAN_HEAT_SINKS | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 245d6ae8
