Key Scenario Characteristics:
1. Extremely low temperatures, below -30°C
2. Rapid temperature pull-down
3. High operational intensity
Project Pain Points：
1. Due to localized heat transfer within the structure, severe thermal bridging can occur, leading to internal frosting and increased energy consumption.
2. Long-term ultra-low-temperature environments place high demands on materials, making the enclosure structure more susceptible to deformation or performance degradation.
3. High sealing performance is required, as even minor gaps within the enclosure system can have amplified negative effects.
Targeted Solutions for Project Challenges
The core of deep-freeze cold storage design optimization lies in ensuring structural stability under extreme conditions, with the enclosure system prioritizing continuity and sealing performance.
The airtightness of a cold storage enclosure system depends not only on the insulation performance of the panels themselves, but also on joint structure, sealing treatment, and installation quality.
PU and PIR insulated panels are commonly used in cold storage applications due to their low thermal conductivity, which can reach as low as 0.019–0.024 W/m·K, providing excellent thermal insulation performance. Rock wool panels are more often applied in areas with higher fire-resistance requirements.
Cold storage panels typically adopt interlocking or cam-lock joint designs, offering strong airtightness, reliable connections, and efficient installation.
2. Reduce Thermal Bridging and Condensation Risks Through Optimized Joint Design
Condensation on cold storage interior surfaces is often related to thermal bridging and insufficient joint airtightness. To reduce these risks, optimized detailing is required at critical connection areas, including:
Wall-to-roof connections — affecting overall airtightness and thermal bridge control
Wall-to-floor connections — impacting insulation continuity and long-term operational stability
Door frame areas — directly influencing cold air leakage and condensation risks
Corner joints — related to structural sealing performance and stress changes
Therefore, in practical projects, attention is given not only to panel performance itself, but also to the continuity of the entire enclosure system through optimized joint and connection detailing.
3. Refrigeration and Airflow Design for Blast Freezing
Blast freezing performance depends not only on low temperatures and a robust enclosure system, but also on the effective distribution of cooling capacity and airflow.
(1) High-capacity refrigeration system for rapid heat removal.
(2) Optimized airflow design ensuring uniform cooling and minimizing temperature variation.
(3) Strategic evaporator placement to eliminate airflow dead zones and improve heat exchange efficiency.
Post time: May-12-2026