Container House Insulation Methods
Container house insulation can be achieved through material selection, structural optimization, and auxiliary design. The specific methods are as follows:
1. Select High-Efficiency Insulation Materials
- Sandwich Panel Technology: Adopt a sandwich structure consisting of an outer corrosion-resistant color-coated steel plate, an intermediate polyurethane foam layer (thickness ≥ 50mm), and an inner fire-resistant gypsum board. This structure can block heat conduction and control humidity simultaneously. The heat transfer coefficient of such materials is ≤ 0.45W/(㎡·K), and the insulation efficiency is 1.8 times that of traditional brick-concrete walls.
- Single Material Application: Polystyrene foam boards, rock wool boards, or autoclaved aerated concrete (AAC) blocks can be directly used as wall filling materials. Among them, rock wool has both fire-resistant and insulation properties, while polystyrene foam is cost-effective and easy to process.
- New Composite Materials: For example, sandwich panels with aluminum foil reflective layers reduce heat absorption by reflecting sunlight; or structural insulated panels (SIPs) that integrate insulation and load-bearing functions.
2. Optimize Structural Design
- Increase Insulation Layer Thickness: Stack multiple layers of insulation materials in walls or roofs. For example, a double-layer polyurethane foam layer can significantly improve thermal resistance.
- Raise the Roof: Create an air insulation layer by raising the ceiling, utilizing the low thermal conductivity of air to reduce heat transfer while providing space for equipment installation.
- Container Combination Design: Use double-layer container stacking or staggered splicing, leaving ventilation gaps in between to form a natural insulation barrier. For example, the Moganshan Café uses a double-layer structure with bottom ventilation slots to achieve cooling in summer.
3. Auxiliary Insulation Measures
- Heat Dissipation and Absorption Systems: Set up porous heat dissipation structures on the outer layer and coat them with insulation paint. Fill the intermediate layer with volatile working fluids (such as water) to lower wall temperature through physical evaporation and heat absorption.
- Shading and Ventilation Design: Install adjustable shading canopies, sloped roofs, or wide floor-to-ceiling windows to control direct sunlight; set up ventilation slots on roofs or walls to promote air circulation.
- Enhance Sealing: Use sealing strips to fill gaps around doors and windows to prevent hot air infiltration; adopt closed insulation methods for interior walls, such as spraying expanded perlite or laying wooden boards.
4. Temperature Control Equipment Supplement
Under extreme climatic conditions, equipment such as air conditioners, graphene floor heating, or entrance air curtains can be used to regulate indoor temperature, but this should be combined with insulation design to reduce energy consumption. For example, measurements show that a well-insulated container house heats up 22 minutes slower than the outdoors at noon in summer and the indoor temperature only drops by 1.3℃ after being closed for 8 hours in winter, significantly reducing equipment operation time.
