Thermal Insulation Effect of Container Houses

The thermal insulation effect of container houses is influenced by various factors such as materials, structure, and craftsmanship. Overall, their thermal insulation performance can approach that of traditional buildings, but a comprehensive assessment is required based on specific design and usage scenarios.

1. Core Thermal Insulation Materials and Structure

The thermal insulation performance of container houses mainly relies on a three-layer structure:

1. Outer Layer: Typically made of anti-corrosion color-coated steel plates, which reduce heat absorption by reflecting sunlight;
2. Middle Layer: The key thermal insulation layer, often using polyurethane foam material or high-density rock wool with a thickness of over 50mm. These materials have low thermal conductivity and can effectively block heat conduction. For example, the thermal insulation performance of a 100mm-thick composite wall can rival that of a 610mm-thick traditional brick-and-concrete structure wall;
3. Inner Layer: Fire-resistant gypsum boards combined with moisture-proof membranes work together to control humidity and temperature fluctuations, enhancing comfort.

2. Key Process Optimization

1. Thermal Break Insulation Technology: To address the cold and hot bridge effects of metal container walls, a thermal break lining structure is adopted (e.g., filling rigid polyurethane foam between steel frames and interior wall panels, and installing rubber thermal insulation pads at frame connections). This can reduce heat exchange efficiency by about 40%. In winter, without heating, the indoor temperature is 8-10℃ higher than the outside;
2. Sealing Process: Full sealing adhesives and waterproof membranes are used at panel joints, and reasonable drainage slopes are designed to avoid cold bridge effects caused by gaps, improving overall airtightness;
3. Door and Window Optimization: Using broken-bridge aluminum double-glazed doors and windows further reduces heat loss while enhancing sound insulation performance.

3. Performance Standards and Measured Data

According to the national 'Technical Standard for Steel Structure Integrated Houses', the heat transfer coefficient of residential container walls should be ≤0.45W/(㎡·K), with a thermal insulation efficiency 1.8 times that of traditional brick-and-concrete walls. Measured data shows:

• In summer, the cabin warms up 22 minutes slower than the outside at noon;
• In winter, after being sealed for 8 hours, the indoor temperature only drops by 1.3℃, with stable temperature fluctuations and a more comfortable feel.

4. Application Scenario Adaptability

Container houses with excellent thermal insulation performance have been widely used in scenic spot homestays, temporary offices, emergency shelters, and other scenarios. For example, a café in Mogan Mountain uses sandwich panels with aluminum foil reflective layers, combined with adjustable sunshade roofs and bottom ventilation slots, to maintain comfort without air conditioning in summer; a construction project in Shijiazhuang effectively reduced winter heating energy consumption by more than 30% by choosing locally produced thermal insulation container houses.