Editorial Technical Reference

Refrigeration Unit

This page explains how Refrigeration Unit is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical system that removes heat from a conditioned space or process fluid.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Refrigeration Unit

Definition
A refrigeration unit is a key component within a conditioning system that provides cooling functionality through vapor-compression or absorption cycles. It typically consists of a compressor, condenser, expansion device, and evaporator working together to transfer heat from the conditioned space to the external environment. This directory entry covers refrigeration units used in machinery and equipment manufacturing, where they serve as parts of larger systems. The unit operates on the vapor-compression cycle, with refrigerant circulating through the four main components. The compressor increases pressure and temperature, the condenser rejects heat to the surroundings, the expansion valve reduces pressure, and the evaporator absorbs heat from the conditioned space. Materials commonly used include copper, aluminum, steel, and refrigerant. Key parameters to consider when selecting a unit include cooling capacity (10–500 kW), refrigerant type (R134a, R410A, R407C), evaporating temperature (-40 to 10 °C), condensing temperature (30–50 °C), power supply (380 V ±10%, three-phase, 50 Hz), power consumption (3–150 kW), noise level (65–85 dB(A)), operating pressure (1.0–1.6 MPa), ambient temperature range (-10 to 45 °C), IP rating (IP54–IP65), refrigerant charge (2–50 kg), weight (200–3000 kg), and dimensions (1000×800×1200 to 4000×2000×2500 mm). These values are reference ranges and must be confirmed for the specific model and application. Standards such as GB/T 18430.1, GB/T 7778, IEC 60038, ISO 3744, and IEC 60529 are listed as verification references. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The refrigeration unit operates on the vapor-compression refrigeration cycle. Refrigerant circulates through four main components: the compressor increases pressure and temperature, the condenser rejects heat to the surroundings, the expansion valve reduces pressure, and the evaporator absorbs heat from the conditioned space. This cycle transfers heat from the conditioned space to the external environment, providing cooling. The efficiency and performance depend on the operating conditions and the selection of components.
Common Materials
Copper, Aluminum, Steel, Refrigerant
Technical Parameters
ParameterTypical rangeNotes & selection driver
Cooling Capacity10–500 kWSelect based on heat load and required temperature difference.GB/T 18430.1
RefrigerantR134a/R410A/R407CChoose according to environmental regulations and application.GB/T 7778
Evaporating Temperature-40–10 °CLower temperatures require multi-stage compression.GB/T 18430.1
Condensing Temperature30–50 °CHigher values reduce efficiency.GB/T 18430.1
Power Supply380 ±10% VThree-phase, 50 Hz; other voltages on request.IEC 60038
Power Consumption3–150 kWDepends on cooling capacity and operating conditions.GB/T 18430.1
Noise Level65–85 dB(A)Lower noise for indoor installations.ISO 3744
Operating Pressure1.0–1.6 MPa
Ambient Temperature Range-10–45 °COutside this range performance may degrade.GB/T 18430.1
IP RatingIP54–IP65Higher rating for outdoor or dusty environments.IEC 60529
Refrigerant Charge2–50 kgDepends on system size and piping length.GB/T 7778
Weight200–3000 kgAffects installation and structural support.
Dimensions (L×W×H)1000×800×1200–4000×2000×2500 mmCheck clearance for maintenance access.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Compressor
    Compresses refrigerant vapor, increasing its pressure and temperature
    Material: Cast iron/Steel
  • Condenser
    Rejects heat from refrigerant to cooling medium (air or water)
    Material: Copper/Aluminum
  • Expansion Valve
    Regulates refrigerant flow and reduces pressure before evaporator
    Material: Brass/Stainless steel
  • Evaporator
    Absorbs heat from conditioned space, causing refrigerant to evaporate
    Material: Copper/Aluminum

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 30 bar (refrigerant side), up to 10 bar (process fluid side)
flow rate: 0.5 to 500 m³/h (process fluid)
temperature: -40°C to +10°C (evaporator), ambient to +60°C (condenser)
slurry concentration: Not applicable for standard units; requires special design for slurry applications
Media Compatibility
✓ Water/glycol mixtures ✓ Ammonia (NH3) as refrigerant ✓ Hydrocarbon refrigerants (R290, R600a)
Unsuitable: Corrosive chemical environments (e.g., chlorine, strong acids) without specialized materials
Sizing Data Required
  • Required cooling capacity (kW or tons of refrigeration)
  • Process fluid inlet/outlet temperatures (°C)
  • Ambient conditions (dry bulb/wet bulb temperatures for air-cooled units)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Compressor motor burnout
Cause: Electrical overload due to voltage fluctuations, poor lubrication, or refrigerant contamination leading to insulation breakdown and winding failure.
Refrigerant leakage at evaporator coils
Cause: Corrosion from moisture ingress or chemical contaminants, combined with vibration-induced stress cracking at brazed joints.
Maintenance Indicators
  • Unusual high-pitched whining or grinding noises from compressor indicating bearing wear or lubrication failure
  • Frost accumulation on suction lines or compressor body signaling refrigerant undercharge, expansion valve malfunction, or airflow restriction
Engineering Tips
  • Implement predictive maintenance with vibration analysis on compressor mounts and motor bearings to detect imbalance or misalignment before catastrophic failure
  • Establish quarterly infrared thermography inspections of electrical connections and heat exchanger surfaces to identify hot spots indicative of developing faults

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 5149:2014 - Refrigerating systems and heat pumps ANSI/ASHRAE 15 - Safety Standard for Refrigeration Systems EN 378:2016 - Refrigerating systems and heat pumps

Quoted from the published standard.

Manufacturing Precision
  • Evaporator/condenser tube diameter: +/-0.05mm
  • Compressor mounting surface flatness: 0.08mm
Quality Inspection
  • Leak test with helium mass spectrometer
  • Performance test under simulated load conditions

Manufacturers of Refrigeration Unit

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

CAS GYW COLD CHAIN SYSTEM (JIANGSU) CO.,LTD.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Kruger (Jiangsu) Cold Chain Technology Co., Ltd.
Jiangsu, CN
Also makes: Fan (Air-Cooled)
Listed on the company's own website · profile compiled by CNFX from public sources
Miracle
Zhengzhou, Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources

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

Technical documentation
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Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Frequently Asked Questions

What are the main components of a refrigeration unit?

The main components are the compressor, condenser, expansion valve, and evaporator. They work together to transfer heat from the conditioned space to the external environment.

What refrigerants are commonly used?

Common refrigerants include R134a, R410A, and R407C. The choice depends on environmental regulations and the specific application.

What is the typical cooling capacity range?

The cooling capacity typically ranges from 10 to 500 kW, but the exact value must be selected based on the heat load and required temperature difference.

Why is it important to verify standards with the manufacturer?

Standards such as GB/T 18430.1 are listed as references, but compliance must be confirmed with the legal manufacturer or supplier for the specific model to ensure it meets your requirements.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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