Stirling freezer employs a Stirling engine to achieve cooling through a cyclic process of compressing and expanding a working gas like helium. It operates efficiently and reliably by transferring heat between different components such as displacer and power pistons, heat exchangers, and a regenerator. Stirling freezers are renowned for their precise temperature control, making them ideal for preserving biological samples, pharmaceuticals, and for cryogenic applications. They are environmentally friendly due to their use of inert gases and lack of harmful refrigerants, offering high efficiency and durability in freezing technology.
Unmatched Portability & Flexibility: With a compact footprint and a net weight of only 17.5 kg, these units fit easily on benches, carts, and in vehicles for seamless last-mile transport.
Precise Thermal Stability: Achieve high-precision cooling with internal temperature fluctuations maintained within ±1°C.
Global Power Compatibility: A wide voltage design supports 100V–240V AC and 12V/24V DC, and it is fully compatible with solar power for off-grid operations.
Sustainable & Eco-Friendly: Uses 100% natural Helium refrigerant (99.999% purity) and R-170 cooling conduction liquid to support environmentally friendly, CFC-free operations.
High Efficiency & Low Maintenance: The Stirling engine offers a long service life with minimal maintenance requirements and low power consumption (as low as 75W steady state for -86°C).
Whisper-Quiet Operation: Noise levels are kept below 55 dB, making them suitable for patient-adjacent areas and shared laboratory spaces.
Juxin offers a versatile range of models tailored to specific temperature requirements, all featuring a 25L storage volume.
| Feature | DW-4525 | DW-6025 | DW-8625 | DW-0225 |
| Temperature Range | +18°C to -45°C | +18°C to -60°C | +18°C to -86°C | +2°C to +8°C |
| Pull-down Time | 1.5h (to -45°C) | 2.5h (to -60°C) | 3.5h (to -80°C) | 0.5h (to 2°C) |
| Steady State Power | 30W | 40W | 75W | 15W |
| Control Accuracy | ±1°C | ±1°C | ±2°C | ±1°C |
| Noise Level | <50dB | <55dB | <55dB | <50dB |
The Refport Stirling Freezer is designed for regulated workflows and extreme conditions across multiple industries:
Clinical & Medical: Reliable point-of-care storage for vaccines, biologics, and clinical medicine.
Life Sciences & Research: Ideal for laboratory ultra-low temperature storage and the transportation of high-value biological samples.
Pharmaceutical Cold Chain: Secure last-mile transport of pharmaceuticals, eliminating the need for constant re-packing.
Industrial Testing: Simulating extreme environments for industrial research and development.
Specialized Storage: Suitable for outdoor camping, household ULT storage, and military-grade field operations.
