---
title: "Chiller Unit"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CHILLER_UNIT"
  data_integrity_hash: "8341e279bc070ffd775d28ec5a8d62bb"
  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:CHILLER_UNIT"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/chiller-unit.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/chiller-unit"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "2.5-4.0 MPa (25-40 bar) refrigerant pressure, 5-35°C coolant outlet temperature"
    unit: "kW"
engineering_limits:
  max_safe_operating_point:
    value: 4.8
    unit: "MPa"
    consequence: "Compressor mechanical failure due to liquid slugging when refrigerant pressure drops below saturation pressure at operating temperature, or condenser tube rupture from excessive pressure exceeding yield strength of copper-nickel alloy (typically 275 MPa)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Coolant flow restriction from particulate accumulation exceeding 50 μm size at filter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual-stage filtration system with 25 μm primary and 10 μm secondary filters with differential pressure monitoring at 0.15 MPa threshold"
  - node_2:
      trigger: "Refrigerant charge loss below 85% of nominal 12 kg R-134a mass"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Mass flow sensors with 0.1 kg resolution triggering automatic shutdown at 10.2 kg refrigerant mass"
bom_nodes:
  compressor:
    type: "part"
    urn: "URN:CNFX:ME:COMPRESSOR"
    interface_type: "physical-logic-coupled"
  condenser:
    type: "device"
    urn: "URN:CNFX:ME:CONDENSER"
    interface_type: "physical-logic-coupled"
  evaporator-process-heat-exchanger:
    type: "part"
    urn: "URN:CNFX:ME:EVAPORATOR_PROCESS_HEAT_EXCHANGER"
    interface_type: "physical-logic-coupled"
  reservoir-pump-assembly:
    type: "part"
    urn: "URN:CNFX:ME:RESERVOIR_PUMP_ASSEMBLY"
    interface_type: "physical-logic-coupled"
  expansion-valve:
    type: "part"
    urn: "URN:CNFX:ME:EXPANSION_VALVE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "CE MARKING (EU DIRECTIVE 2014/35/EU FOR LOW VOLTAGE EQUIPMENT)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/chiller-unit.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c66305d24f83798b224d7d9dbca7a88b803fa0c5365c74c20b01a252bfe39104"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Chiller Unit

## 1. Technical Definition
A refrigeration system that removes heat from the CNC laser cutting machine's laser source and optics to maintain optimal operating temperatures.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **2.5-4.0 MPa (25-40 bar) refrigerant pressure, 5-35°C coolant outlet temperature**. Failure boundary: **Refrigerant pressure exceeding 4.8 MPa (48 bar) or dropping below 1.8 MPa (18 bar), coolant temperature exceeding 40°C or dropping below 3°C**, Mechanism: **Compressor mechanical failure due to liquid slugging when refrigerant pressure drops below saturation pressure at operating temperature, or condenser tube rupture from excessive pressure exceeding yield strength of copper-nickel alloy (typically 275 MPa)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Coolant flow restriction from particulate accumulation exceeding 50 μm size at filter | 8 | Compressor overheating leading to thermal expansion seizure at 120°C bearing temperature | Dual-stage filtration system with 25 μm primary and 10 μm secondary filters with differential pressure monitoring at 0.15 MPa threshold |
| Refrigerant charge loss below 85% of nominal 12 kg R-134a mass | 8 | Evaporator coil frost formation reducing heat transfer coefficient from 850 W/m²·K to below 200 W/m²·K | Mass flow sensors with 0.1 kg resolution triggering automatic shutdown at 10.2 kg refrigerant mass |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Compressor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/compressor.md) `(Standalone System)`
- [Condenser](https://cnfx.com/llms/industry/chemical-manufacturing/product/condenser.md) `(Standalone System)`
- [Evaporator / Process Heat Exchanger](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/evaporator-process-heat-exchanger.md) `(Standalone System)`
- [Reservoir / Pump Assembly](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/reservoir-pump-assembly.md) `(Standalone System)`
- [Expansion Valve](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/expansion-valve.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Laser Cutting Machine**, **Cooling Tower**, **Water Treatment System**  
**Downstream Applications**: Precision Metal Components, Automotive Parts, Aerospace Components  

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

### Q: How does this chiller unit maintain optimal temperatures for CNC laser cutting machines?
**A**: The chiller circulates coolant through the laser source and optics, absorbing heat via copper heat exchangers and dissipating it through aluminum-finned condensers, maintaining precise temperature ranges for consistent cutting performance.

### Q: What materials make this industrial chiller durable for manufacturing environments?
**A**: Constructed with copper tubing for efficient heat transfer, aluminum fins for cooling, steel structural frames for stability, and corrosion-resistant plastics for reservoirs and fittings to withstand demanding factory conditions.

### Q: What maintenance does this chiller unit require for reliable operation?
**A**: Regular cleaning of condenser fins, checking coolant levels in the reservoir, monitoring compressor performance, and inspecting expansion valve operation ensure continuous, efficient cooling with minimal downtime.

## 6. Manufacturing Compliance
- CE MARKING (EU DIRECTIVE 2014/35/EU FOR LOW VOLTAGE EQUIPMENT)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Chiller Unit](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/chiller-unit)**

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

> **Reference ID**: CHILLER_UNIT | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 5304f54a
