Structured Manufacturing Data (2026)

Evaporator / Process Heat Exchanger

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Evaporator / Process Heat Exchanger used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Evaporator / Process Heat Exchanger is characterized by the integration of Tube Bundle and Fins. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A heat exchanger component within a chiller unit that facilitates the evaporation of refrigerant to absorb heat from the process fluid or air.

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Product Specifications

Technical details and manufacturing context for Evaporator / Process Heat Exchanger

Definition
In a chiller unit, the evaporator/process heat exchanger is a critical component where the refrigerant undergoes a phase change from liquid to vapor, absorbing thermal energy from the water, brine, or air being cooled. This heat absorption process is fundamental to the chiller's refrigeration cycle, enabling temperature control for industrial processes or air conditioning systems.
Working Principle
The evaporator operates on the principle of latent heat transfer. Low-pressure, low-temperature liquid refrigerant enters the evaporator tubes or plates. As the process fluid (e.g., water) flows over the external surfaces, heat is transferred from the fluid to the refrigerant, causing the refrigerant to boil and evaporate into a vapor. This phase change absorbs a significant amount of heat (latent heat of vaporization), effectively cooling the process fluid.
Common Materials
Copper, Stainless Steel, Aluminum
Technical Parameters
  • Tube diameter, fin spacing, and overall coil dimensions. (mm) Standard Spec
Components / BOM
  • Tube Bundle
    Contains the refrigerant and provides the primary heat transfer surface.
    Material: Copper or Stainless Steel
  • Fins Part
    Increase the external surface area for enhanced heat transfer with air (in air-cooled designs) or provide structural support in plate designs.
    Material: Aluminum
  • Distribution Header
    Evenly distributes liquid refrigerant into multiple tubes or channels within the evaporator.
    Material: Steel or Copper

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Evaporator / Process Heat Exchanger.

industrial chiller evaporator heat exchanger copper tube bundle process heat exchanger stainless steel evaporator for machinery manufacturing custom aluminum fin heat exchanger refrigerant evaporation heat transfer component

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Chiller Unit
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 30 bar (standard), up to 60 bar (high-pressure designs)
other spec: Flow Rate: 0.5-500 m³/h (liquid), Slurry Concentration: ≤30% solids by weight (depending on design)
temperature: -40°C to 150°C (typical), -60°C to 200°C (specialized)
Media Compatibility
✓ Water/Glycol Solutions ✓ Hydrocarbon Refrigerants (R134a, R410A) ✓ Process Fluids (ethanol, ammonia)
Unsuitable: Highly corrosive media (e.g., concentrated acids, strong oxidizers) without specialized coatings
Sizing Data Required
  • Heat Load (kW or BTU/hr)
  • Temperature Difference (ΔT) between refrigerant and process fluid
  • Fluid Properties (specific heat, density, viscosity)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fouling and scaling
Cause: Accumulation of deposits (e.g., minerals, salts, biological growth) on heat transfer surfaces, reducing thermal efficiency and increasing pressure drop due to poor water quality, inadequate pretreatment, or improper chemical dosing.
Corrosion and pitting
Cause: Localized material degradation, often from aggressive process fluids (e.g., chlorides, acids), galvanic effects, or inadequate material selection, leading to leaks and structural weakness.
Maintenance Indicators
  • Significant drop in heat transfer efficiency (e.g., higher outlet temperatures than expected, reduced evaporation rates)
  • Audible water hammer or vibration noises, indicating flow instability, air entrainment, or tube blockage
Engineering Tips
  • Implement regular chemical cleaning and water treatment programs to control scaling and fouling, based on fluid analysis and manufacturer guidelines.
  • Use corrosion-resistant materials (e.g., stainless steel, titanium) or protective coatings in critical areas, and monitor wall thickness with non-destructive testing (e.g., ultrasonic testing) periodically.

Compliance & Manufacturing Standards

Reference Standards
ISO 15547: Process heat exchangers - General requirements ASME BPVC Section VIII: Rules for Construction of Pressure Vessels EN 13445: Unfired pressure vessels
Manufacturing Precision
  • Tube-to-tubesheet weld penetration: Minimum 90% of tube wall thickness
  • Flatness of tube sheets: 0.5mm per meter or 3mm maximum overall
Quality Inspection
  • Hydrostatic pressure test at 1.5x design pressure
  • Eddy current testing of heat exchanger tubes

Factories Producing Evaporator / Process Heat Exchanger

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are best for evaporator heat exchangers in machinery manufacturing?

Copper offers excellent thermal conductivity for high-efficiency applications, stainless steel provides superior corrosion resistance for harsh environments, and aluminum provides a lightweight, cost-effective option for standard industrial use.

How does the tube bundle design affect evaporator performance?

The tube bundle configuration directly impacts heat transfer efficiency, pressure drop, and refrigerant distribution. Optimized designs maximize surface area contact between refrigerant and process fluid while maintaining structural integrity under operational pressures.

What maintenance is required for industrial evaporator heat exchangers?

Regular maintenance includes cleaning fins to prevent fouling, inspecting distribution headers for even refrigerant flow, checking for corrosion or leaks, and monitoring pressure differentials to ensure optimal heat transfer efficiency throughout the equipment lifecycle.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Machinery and Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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