0°C to 13°C
Every product category demands a specific thermal environment. Xnair engineers cold storage facilities matched to the precise temperature band, humidity level, and airflow pattern your goods require—whether fresh produce, frozen seafood, or temperature-sensitive pharmaceuticals.
Selecting a cold storage solution depends primarily on three factors: the required temperature range for your specific product, the humidity control needs, and the storage duration. For example, fresh fruits and vegetables typically require 0°C to 13°C with humidity control between 85% and 95%, while frozen seafood demands consistent temperatures between -25°C and -18°C. Xnair provides application-specific cold rooms engineered to each product category's precise thermal and humidity requirements, with insulation panel thickness options from 75mm to 200mm polyurethane foam to match your thermal load calculations.
Frozen food storage generally requires temperatures between -30°C and -18°C, depending on the specific product. Ice cream and deep-frozen goods demand the lower end of this range (-30°C to -25°C) to maintain product integrity and prevent crystallization. Standard frozen meat and prepared frozen foods are typically stored at -18°C to -20°C. Xnair cold storage units are built with high-density polyurethane insulation panels and precision refrigeration systems capable of maintaining these temperature setpoints with a tolerance of ±1°C, even under high door-opening frequency conditions.
Humidity control is critical for fruit and vegetable cold storage because most fresh produce is composed of 80% to 95% water. Without adequate relative humidity (typically 85% to 95% RH), produce loses moisture through transpiration, leading to weight loss, wilting, and reduced shelf life. Xnair cold storage solutions for horticultural products incorporate industrial-grade humidification systems and psychrometric monitoring that maintain the target humidity band. The vapor barrier within our polyurethane sandwich panels also prevents condensation and frost buildup that could otherwise compromise humidity stability.
A qualified cold storage equipment supplier should hold CE certification for the European market, ISO 9001 for quality management systems, and ideally ISO 14001 for environmental management. For pharmaceutical cold storage applications, compliance with WHO Good Storage Practice guidelines and GDP standards is essential. Xnair holds CE certification and follows ISO 9001 quality management protocols throughout the design, manufacturing, and commissioning process. Each cold storage unit undergoes a factory acceptance test including thermal performance verification, refrigerant leak testing, and control system validation before shipment.
Before any cold storage facility leaves our Shanghai manufacturing plant, it passes through a structured factory acceptance testing (FAT) procedure. This includes a continuous 72-hour thermal performance run where the chamber must demonstrate stable temperature maintenance within the specified tolerance band under simulated load conditions. Refrigerant piping is pressure-tested with nitrogen at 1.5 times the design operating pressure, and all welded joints undergo halogen leak detection.
Control system validation covers sensor calibration verification, alarm threshold testing, and failover simulation for redundant refrigeration circuits. For pharmaceutical-grade cold rooms, we provide a complete Installation Qualification (IQ) and Operational Qualification (OQ) documentation package to support your regulatory compliance needs.