Refrigerated Container House Renovation

The renovation of refrigerated container houses requires comprehensive consideration of structural reinforcement, thermal insulation, water and electricity systems, and functional zoning design. Through modular renovation, a livable space with low cost and high flexibility can be achieved.

I. Basic Structural Renovation

1. Structural Reinforcement and Rust Prevention
   The main body of the container is made of high-strength steel, but after long-term use, it is necessary to inspect the welds and rust conditions. Before renovation, rust prevention treatment (such as sandblasting for rust removal followed by painting with anti-corrosion paint) should be carried out, and key load-bearing parts (such as corner fittings and columns) should be reinforced to ensure structural stability. For example, enterprises like Qinghai Guangzan Light Steel adopt methods such as using thicker steel plates or adding transverse support beams to enhance load-bearing capacity.

2. Door and Window Optimization
   The original container is only equipped with standard cargo doors, so it is necessary to cut openings and install customized doors and windows. It is recommended to use double-glazed windows (such as the 'wire mesh glass wall' mentioned in the case) to balance light transmission and thermal insulation; for doors, security doors or folding doors can be selected to save space. For example, in a certain case, by adding a side door and a hydraulic deck linkage design, flexible switching between indoor and outdoor spaces was achieved.

II. Thermal Insulation System

1. Material Selection
   Containers have high thermal conductivity of metal, so an insulation layer needs to be laid. Common solutions include:

• Exterior Wall: Double-layer rock wool boards (density ≥ 120kg/m³) or polyurethane foam boards, with a recommended thickness of 5-10cm;
• Interior Wall: Wood veneer panels or gypsum boards, which not only cover the metal corrugations but also enhance aesthetics;
• Floor: XPS extruded polystyrene boards (thermal conductivity ≤ 0.03W/m·K) paired with a moisture-proof film to prevent cold bridge effects.

2. Fire Protection Design
   Areas such as kitchens and stoves need to use fire-resistant materials (such as the 'black special material' mentioned in the case) and reserve fire separation distances. Electrical wiring should be protected by metal conduits to prevent short circuits from causing fires.

III. Water and Electricity System Renovation

1. Water Supply and Drainage System

• Bathroom: S-shaped drain pipes (for odor prevention) and waterproof trays need to be pre-embedded. Wall-mounted toilets and thermostatic showerheads can save space;
• Kitchen: Integrated sinks with water purifiers should be used, and it is recommended to run water pipes along the ceiling (for easy maintenance);
• Solar Power Supply: Monocrystalline silicon solar panels (power selected according to demand) should be installed on the roof, paired with a lithium battery energy storage system to meet basic power needs.

2. Ventilation and Air Conditioning

• Natural Ventilation: Form air convection through operable windows and exhaust fans;
• Mechanical Ventilation: Install a fresh air system (such as the 'roof lifting rod connected to the ventilation opening' mentioned in the case) to solve air quality problems in enclosed spaces;
• Air Conditioner Selection: Choose a 1-1.5 horsepower inverter air conditioner according to the area. In winter, it can be paired with an electric heater or underfloor heating (pipes need to be pre-embedded in advance).

IV. Functional Zoning and Storage Design

1. Space Utilization

• Folding Furniture: Such as foldable bed boards and built-in dining tables to improve space utilization;
• Vertical Storage: Install open shelves or hanging cabinets on the walls to store clothes, books, etc.;
• Multi-functional Areas: Such as the 'hydraulic deck terrace' mentioned in the case, which achieves indoor-outdoor space conversion through an electric system.

2. Unified Style
   Use light colors such as natural wood and white as the main tones, paired with warm light strips to weaken the metallic texture. For example, in a certain case, through the contrast between wood veneer and a black stove, a warm industrial style atmosphere was created.

V. Compliance and Safety

1. Approval Process
   Before renovation, it is necessary to confirm local policies (such as regulations on rural self-built houses). Some areas may require submission of structural safety certificates or fire protection acceptance reports.

2. Safety Measures

• Install smoke alarms and carbon monoxide detectors;
• Install guardrails on stairs, terraces, and other areas;
• Ensure that emergency exit signs are clear and evacuation routes are unobstructed.