Transforming Container Houses into Cold Storages

It is feasible to transform container houses into cold storages, and there are already mature solutions available for reference. The implementation can be carried out from the following aspects:

I. Transformation Basis and Feasibility Container houses inherently possess high structural strength and strong mobility, making them highly compatible with the requirements of cold storages. For example, companies such as Qingdao Chunyuan Container Service Co., Ltd. offer services for the sale and modification of second-hand containers, enabling the transformation of ordinary containers into mobile cold storages, offices, or warehouses. During the transformation, priority should be given to selecting containers with good thermal insulation properties, such as those using double-sided color-steel polyurethane sandwich cold storage panels. The B2-grade fire-resistant polyurethane material in these panels can effectively reduce cold loss and lower energy consumption.

II. Core Equipment Configuration

1. Refrigeration Units: The equipment should be selected based on the temperature requirements of the cold storage. For instance, a -18℃ freezer requires a Copeland semi-hermetic compressor unit, which is highly efficient, energy-saving, and cost-effective. A +5℃ to -5℃ fresh-keeping storage can use a ceiling-mounted air cooler, which cools quickly and prevents ice from falling off during defrosting, avoiding contamination of goods.
2. Intelligent Control System: It integrates multiple protection functions such as power phase loss, excessive current, and frequent starting, which can extend the lifespan of the compressor and reduce manual maintenance costs. For example, the container cold storages provided by Lenglian Refrigeration have achieved unmanned operation and automatic running.
3. Power Adaptation: The power supply should be selected based on the site conditions, either 380V or 220V. Some equipment supports dual-voltage switching, enhancing operational flexibility.

III. Transformation Process and Precautions

1. Structural Reinforcement: If the original container is an ordinary dry cargo container, cold storage panels should be installed inside, and the sealing should be strengthened to prevent cold bridge effects. For example, Lanzhou Liqun Color Plate Steel Structure Engineering Co., Ltd. uses polyurethane foam integrated forming technology to improve thermal insulation performance.
2. Equipment Integration: Refrigeration equipment should be pre-installed and debugged in the factory to avoid on-site construction errors. For example, Lenglian Refrigeration integrates refrigeration equipment and insulated storage bodies in its design, shortening the installation period and improving stability.
3. Compliance Inspection: After transformation, the cold storage should comply with hygiene standards for food storage or pharmaceutical cold storages, such as using food-grade stainless steel inner walls and configuring independent drainage systems.

IV. Cost and Advantages The transformation cost varies depending on the container size and equipment configuration. For example, the transformation cost of a 20-foot used refrigerated container starts at approximately 37,500 yuan, and the rental cost of a 40-foot freezer is about 6,500 yuan per unit. The core advantages include:

• Mobile Convenience: The entire unit can be transported without disassembly, suitable for scenarios such as construction sites and mobile markets.
• Long Lifespan: The integrated design of the cold storage panels and container structure ensures a lifespan of over 10 years.
• Energy Efficiency: The combination of polyurethane thermal insulation materials and intelligent control systems can reduce energy consumption by over 30%.