Installing industrial low-temperature cold storage (-18°C to -40°C) requires careful planning to ensure stable temperature control, energy efficiency, and long-term reliability—key goals for any industrial low-temperature cold storage installation.  Whether for food preservation, pharmaceutical storage, or logistics, following these critical installation considerations is essential for a high-performance cold room.  Below are the most important factors to focus on for industrial low-temperature cold storage installation.

1. Site & Foundation Preparation

Low-temperature cold rooms impose strict requirements on the installation base. Poor preparation leads to structural deformation, air leakage, and high energy costs.

• The ground must be level, load-bearing, and moisture-proof. For temperatures ≤-25°C, add an insulation layer and anti-frost heave structure to avoid ground cracking.
• Keep the area dry, ventilated, and free of corrosive gas, flammables, and explosives.
• Reserve sufficient space for equipment maintenance:
  • Condenser: ≥400mm from the wall at the air inlet; ≥3m clearance at the air outlet.
  • Evaporator: Maintain proper distance from walls and stored goods for uniform airflow.
• Confirm power supply in advance: large cold storage needs 380V three-phase power with stable voltage (fluctuation ≤±10%).

2. Cold Room Panel & Sealing Installation

Sealing and insulation directly determine energy efficiency and temperature stability; gaps are the biggest cause of energy waste.

• Use high-density PU sandwich panels with thermal conductivity ≤0.022 W/(m·K). Thickness: 100–150mm for -18°C; 150–200mm for ≤-25°C.
• Install panels from a fixed corner; ensure verticality and levelness.
• All joints must use special low-temperature sealant; no gaps allowed.
• Use corner profiles at wall–roof and wall–floor junctions to strengthen sealing and avoid cold bridges.
• Penetrations for pipes and wires must be sealed tightly with insulation and foam to prevent air leakage.

3. Cold Storage Door Installation

Door issues are the most common after-sales problem in low-temperature cold rooms.

• Use a special low-temperature cold room door with a built-in electric heating wire to prevent freezing and sticking.
• Install door frame firmly and level; test sealing with paper strips (no air leakage).
• Equip with safety escape device for emergency exit from inside.
• Install an air curtain or door closer to reduce cold air loss when opening frequently.

4. Refrigeration System Installation

The refrigeration unit is the heart of low-temperature cold storage.

• Select a low-temperature compressor unit matched to storage volume and target temperature.
• Install oil separator and gas–liquid separator for evaporation temperature below -15°C.
• Use nitrogen protection during copper pipe welding to prevent oxidation and blockage.
• All external pipes must be insulated and protected to avoid condensation and cold loss.
• Keep the pipeline as short and straight as possible; increase pipe diameter if the unit is >3m from the evaporator.

5. Evaporator, Defrost & Drainage

Low-temperature rooms produce heavy frost; poor drainage causes ice blockage.

• Install the evaporator centrally for even air distribution; no dead corners.
• Use automatic defrosting (electric or hot gas).
• Drainage pipes must have a slope toward the outside and be equipped with heating cable + insulation to prevent freezing.
• Install a U-shaped water seal at the outlet to prevent hot air and insects from entering.

6. Electrical & Control System

• Use explosion-proof, moisture-proof, low-temperature resistant lamps and sockets.
• Install temperature sensors at the return air inlet (not close to heat sources or defrosting pipes).
• Equip with temperature monitoring, alarm, and remote control functions.
• Ensure reliable grounding and leakage protection.

7. Safety & Compliance

• Comply with local building, fire safety, and food storage regulations.
• Install emergency lighting, exit signs, and fire alarms.
• Provide operation and maintenance training for on-site staff.

8. Commissioning & Acceptance

• Conduct a 72-hour continuous full-load test.
• Verify temperature uniformity, unit stability, defrost function, and drainage.
• Check for abnormal noise, vibration, frost, or leakage.
• Provide complete documents: drawings, parameters, operation manual, and warranty.

Conclusion

Industrial low-temperature cold storage installation is a systematic project. The key points are:solid foundation → tight sealing → matched refrigeration → reliable defrost and drainage → safe electrical → professional commissioning
Strictly following these rules will ensure stable operation, low energy consumption, and long service life for your cold storage.