Editorial Technical Reference

Heating/Cooling System

This page explains how Heating/Cooling System is classified within Rubber and Plastic Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The heating/cooling system is a critical subsystem within twin-screw polymer compounding extruders.

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

Product Specifications

Technical details and manufacturing context for Heating/Cooling System

Definition
The heating/cooling system is a critical subsystem within twin-screw polymer compounding extruders. It precisely regulates barrel and screw temperatures through integrated heating and cooling mechanisms to maintain optimal polymer viscosity, ensure proper melting, prevent degradation, and achieve consistent compound quality throughout the extrusion process. The system typically comprises electrical resistance heaters or induction heating elements to raise barrel temperatures to polymer melting points, combined with liquid cooling channels (usually water or oil circulation) or air cooling systems to remove excess heat generated by shear forces. This enables precise temperature profiles along the extruder barrel length, which is essential for processing a wide range of polymers with varying thermal sensitivities. The system is designed for integration into industrial extrusion lines, with heating capacities ranging from 15 to 60 kW, cooling capacities from 10 to 40 kW, and temperature control accuracy of ±1°C. Operating pressure is specified between 1.0 and 1.6 MPa, and maximum operating temperature is 350°C for oil-based systems, while water systems are limited to 180°C. Cooling water flow rates per zone range from 20 to 80 L/min with a pressure drop of ≤0.3 MPa. Heating element voltage is 220–480 V AC (three-phase, 50/60 Hz), and control voltage is 24 V DC for PLC and sensors. The system is rated IP54–IP65 per IEC 60529, with wetted parts made of 316L stainless steel per ASTM A240 for corrosion resistance. Weight ranges from 150 to 400 kg depending on heating capacity and number of zones. These values are directory reference ranges and must be confirmed for the actual model and application with the legal manufacturer or supplier.
Working Principle
The system uses electrical resistance heaters or induction elements to heat the barrel to the polymer's melting point. Cooling is achieved via liquid channels (water or oil) or air systems that remove excess heat from shear forces. Temperature sensors along the barrel provide feedback to a PLC, which adjusts heating and cooling outputs to maintain the set temperature profile. This closed-loop control ensures uniform melt temperature and prevents thermal degradation.
Common Materials
Stainless steel, Copper heating elements, Ceramic insulation
Technical Parameters
ParameterTypical rangeNotes & selection driver
Heating Capacity15–60 kWRequired to reach melt temperature within 30 min
Cooling Capacity10–40 kWBased on water flow and ΔT=10°C
Temperature Control Accuracy±1 °CMeasured at sensor point
Max Operating Temperature350 °CFor oil-based systems; water systems limited to 180°C
Cooling Water Flow Rate20–80 L/minPer zone; pressure drop ≤0.3 MPa
Heating Element Voltage220–480 V ACThree-phase; frequency 50/60 Hz
Control Voltage24 V DCFor PLC and sensors
IP RatingIP54–IP65Higher IP for washdown environmentsIEC 60529
Material of Wetted Parts316LCorrosion resistance for water/glycolASTM A240
Weight150–400 kgDepends on heating capacity and number of zones

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
  • Heating Elements Part
    Generate heat through electrical resistance to raise barrel temperatures
    Material: Stainless steel sheathed with nickel-chromium alloy
  • Cooling Channels Part
    Circulate cooling fluid to remove excess heat from barrel
    Material: Stainless steel
  • Temperature Sensors
    Monitor actual temperatures for feedback control
    Material: Thermocouples (type K or J)
  • Control Unit
    Process sensor data and regulate heating/cooling output
    Material: Electronic components in protective housing

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar
flow rate: 5-100 L/min
temperature: -20°C to 200°C
slurry concentration: Up to 40% solids by weight
Media Compatibility
✓ Thermal oil (e.g., silicone-based) ✓ Water-glycol mixtures ✓ Polymer melts (e.g., polyethylene, polypropylene)
Unsuitable: Corrosive chemical environments (e.g., strong acids, chlorinated solvents)
Sizing Data Required
  • Required heat transfer capacity (kW)
  • Process temperature profile (setpoints and ramp rates)
  • Extruder screw diameter and L/D ratio

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fouling and scaling
Cause: Accumulation of mineral deposits, biological growth, or particulate matter on heat exchanger surfaces, reducing heat transfer efficiency and increasing pressure drop, often due to poor water quality, inadequate filtration, or insufficient chemical treatment.
Corrosion and pitting
Cause: Electrochemical degradation of metal components (e.g., pipes, coils, tanks) from exposure to water, chemicals, or atmospheric conditions, accelerated by factors like low pH, high chloride content, galvanic coupling, or oxygen ingress in closed systems.
Maintenance Indicators
  • Unusual noises such as knocking, banging, or grinding from pumps, compressors, or piping, indicating cavitation, bearing failure, or loose components
  • Visible leaks, corrosion spots, or frost buildup on refrigerant lines, valves, or connections, signaling seal degradation, pressure issues, or insulation failure
Engineering Tips
  • Implement a proactive water treatment program with regular testing and chemical dosing to control scaling, corrosion, and biological growth, tailored to system materials and operating conditions
  • Establish a condition-based maintenance routine using vibration analysis, thermal imaging, and pressure/temperature trending to detect early degradation before catastrophic failure

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
ANSI/ASHRAE 15 - Safety Standard for Refrigeration Systems EN 378 - Refrigerating Systems and Heat Pumps

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.05mm
  • Surface Flatness: 0.15mm
Quality Inspection
  • Pressure Leak Test
  • Thermal Performance Test

Manufacturers of Heating/Cooling System

2 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.

Holtop
Beijing, CN
Founded 2002400 staff30,000 square meters
ISO9001 ISO14001 OHSAS18001 CE +1
Listed on the company's own website · profile compiled by CNFX from public sources
Huixin Machinery
Shandong, 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
Request current drawings, revision history, and a signed specification sheet.
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
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

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Frequently Asked Questions

What is the typical heating capacity range?

The heating capacity is typically 15–60 kW, depending on the extruder size and processing requirements. Confirm the exact value for your specific model with the manufacturer.

What cooling media can be used?

The system can use water or oil as cooling media. Water systems are limited to 180°C, while oil-based systems can operate up to 350°C. The choice depends on the required temperature range.

What is the temperature control accuracy?

The temperature control accuracy is ±1°C, measured at the sensor point. This ensures precise temperature regulation along the barrel.

What standards apply to this system?

The system references, IEC 60529 for IP rating, and ASTM A240 for material of wetted parts. These are verification references; compliance must be confirmed with the manufacturer.

Data Basis

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

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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