Thermal Insulation and Heat Preservation of Container Houses

Thermal insulation and heat preservation of container houses are mainly achieved through material selection, structural design, and auxiliary measures, with the core being to block heat conduction, reduce heat loss, and optimize thermal comfort.

1. Material Selection and Performance Requirements

1. Wall Materials
   The mainstream options are rock wool, glass wool, or polyurethane sandwich panels, which have low thermal conductivity (e.g., polyurethane ≤ 0.024 W/(m·K)), effectively blocking heat conduction. For example, Yunnan Hongfeng's residential container houses use a polyurethane foam layer of over 50mm, combined with an outer layer of anti-corrosion color-coated steel plate to reflect sunlight and an inner layer of fire-resistant gypsum board + moisture-proof film for humidity control, forming a multi-layer protective system.
2. Door and Window Materials
   Thermally broken aluminum double-glazed windows (e.g., used in cultural and tourism space capsule shops) are required, with a thermal conductivity more than 60% lower than that of single-glazed windows, significantly improving indoor temperature stability.
3. Floor and Roof
   Cement fiberboard or steel-wood composite flooring is commonly used for the floor, while the roof can be equipped with an aluminum foil reflective layer (e.g., as seen in the Moganshan Coffee Shop case) or ventilation slot design to reduce the cabin temperature by reflecting thermal radiation and promoting air circulation.

2. Structural Design Optimization

1. Thermally Broken Insulation Process
   Thermal insulation strips (e.g., made of PA66+GF25 material) are installed between the steel structural frame and the enclosure panels to block the metal thermal bridge effect and reduce heat transfer through the structure.
2. Enhanced Sealing Performance
   Waterproof membranes + sealant are used to fully seal panel joints and door/window closures, and the roof is designed with a reasonable drainage slope (e.g., ≥ 5%) to ensure continuous sealing without interruptions, preventing heat loss caused by rainwater infiltration and air convection.
3. Multi-Layer Protective System
   Combining an insulation layer, moisture-proof layer, and ventilation layer (e.g., as seen in the Apple Cabin container homestay) forms a "blocking-moisture removal-buffering" mechanism to adapt to extreme temperature difference environments.

3. Auxiliary Measures and Detail Handling

1. Integrated Temperature Control Equipment
   Air conditioners, graphene floor heating, or entrance air curtains are equipped to actively regulate and compensate for the shortcomings of passive insulation. For example, Qingdao Jiecheng Hongye's refrigerated container houses support 380V three-phase power plug-and-play, meeting rapid deployment needs.
2. Sunshade and Ventilation Design
   Adjustable sunshade canopies (e.g., as seen in the Moganshan Coffee Shop) or sloped roof structures are installed externally to reduce direct sunlight exposure; ventilation slots are set at the bottom to promote air circulation using the thermal pressure principle, lowering the cabin temperature in summer.
3. Localized Process Improvements
   For cold or humid regions (e.g., Jining), the panel coating formula is adjusted (e.g., outer layer of high-weather-resistant polyester resin, inner layer of moisture-proof aluminum foil) to reduce the probability of condensation and extend service life.