Aluminium Pipe Coil

The Lynxcool Aluminium Pipe Coil is designed for medium- and low-temperature cold storage where precise temperature control and high humidity are critical. It uses aluminum alloy finned tubes with an outer-fin/inner-thread design. Natural convection generates a chimney effect, causing cold air to descend and warm air to rise, creating uniform cooling without fans. Fanless operation reduces energy consumption, while the aluminum material maintains thermal stability and prevents temperature swings.

Applications and Use Cases

The product addresses challenges in cold storage, such as excessive product dehydration, temperature instability, and high energy consumption from fan-based systems.

● Industrial Cold Storage

Designed for meat, poultry, seafood, and dairy storage. Ceiling-mounted installation ensures natural air circulation and stable temperatures from -5°C to -30°C. Fanless operation reduces noise and eliminates fan heat gain.

● Pharmaceutical and Biological Storage

Maintains temperatures between +2°C and -20°C, suitable for vaccines and biological products. Aluminum alloy construction ensures compliance with pharmaceutical hygiene standards.

● Fruit and Vegetable Storage

Temperature controlled at 0°C to -5°C, the Lynxcool Aluminium Pipe Coil preserves over 90% relative humidity to prevent wilting and freeze damage. Its fanless design reduces noise and extends product shelf life.

● Aquatic Product Cold Storage

Maintains temperatures from -15°C to -25°C with low air velocity (≤0.3 m/s) to minimize moisture loss. Compatible with ammonia refrigeration systems (R717) for large-scale seafood facilities.

These applications demonstrate how the product provides stable, energy-efficient cooling across a variety of cold storage scenarios, improving product quality and operational reliability.

Technical Features and Advantages

The Lynxcool Aluminium Pipe Coil integrates advanced design and high-quality materials to optimize performance, reduce energy use, and ensure long-term reliability.

Key Features

● Chimney Effect and Natural Convection

Vertical fin channels promote natural air circulation without fans, saving approximately 30–40% energy while maintaining stable temperatures.

● Low Dehydration and High Humidity

Low air velocity (≤0.3 m/s) and relative humidity of 90–95% significantly reduce product weight loss compared to fan-coil systems.

● Minimal Temperature Fluctuation

The aluminum body stores cold energy, reducing compressor start-stop cycles by 30–35%, extending equipment lifespan and maintaining consistent cooling.

● Outer-Fin / Inner-Thread Tube Design

Single die-cast pressed fins maximize air-side heat transfer, while the inner thread reduces refrigerant-side resistance and refrigerant charge.

● Electric Defrost with Drip Tray

Integrated electric heating elements and collection tray automatically defrost based on a timer or frost-sensor trigger. Suitable for frost thickness ≥10 mm (feathery) or ≥5 mm (hard ice).

● Refrigerant Compatibility

Fully compatible with both HFC refrigerants and ammonia (R717). All-aluminum fittings prevent corrosion and ensure long-term durability.

These technical features make the Lynxcool Aluminium Pipe Coil highly reliable, energy-efficient, and suitable for premium cold storage applications, including food, pharmaceuticals, and aquatic products.

Technical Parameters

The specifications table provides clear guidance for engineers and procurement teams to select the appropriate coil model based on load, temperature, and storage type.

Installation and Selection Guidelines

Correct installation and selection are crucial for achieving optimal performance from the Lynxcool Aluminium Pipe Coil.

● Ceiling Installation: Maintain 150–200 mm clearance, level suspension ensures proper chimney effect.

● Tube Diameter: Choose φ25 or φ32 based on cooling load and cold store volume.

● Fin Type: Double-fin for medium load, triple-fin for high load or large cold rooms.

● Single-Pass Length: Exceeding 80 m (φ25) or 100 m (φ32) requires parallel branches with Venturi liquid distributors for even refrigerant distribution.

● Defrost Schedule: Typically 2–4 cycles per 24 hours, or triggered by frost thickness sensors.

Following these guidelines ensures stable temperature and humidity, efficient energy usage, and extended equipment life for the product.

FAQ

Q: What is the chimney effect, and why is it important?

A: The chimney effect uses natural convection to circulate air within the cold store. Cold air descends through vertical fin channels while warm air rises, enabling efficient heat transfer without fans. Proper installation with 150–200 mm ceiling clearance ensures continuous circulation.

Q: How is the required heat transfer area calculated?

A: Use the formula A = Q / (K·Δt), where K = 9–10 W/m²°C and Δt ≈ 10°C. Select tube diameter and fin type accordingly. Lynxcool engineers can provide precise calculations for project-specific requirements.

Q: Why is single-pass tube length limited?

A: Excessive length increases pressure drop, reducing cooling efficiency. Limits: φ25 = 80 m, φ32 = 100 m. For larger rooms, use parallel branches with Venturi distributors to maintain even refrigerant distribution.

Q: Can the coil be used with ammonia (R717)?

A: Yes, the Lynxcool Aluminium Pipe Coil is fully compatible with ammonia (R717). Lynxcool manufactures R717-rated coils in China with all-aluminum fittings and full pressure testing. Copper is not used.

Q: When and how should defrosting be performed?

A: Recommended triggers: feathery frost ≥10 mm or hard ice ≥5 mm. Typically 2–4 cycles per 24 hours using electric heaters. Manual defrost is possible under unusual conditions.