Thermal Insulation and Heat Preservation of Container Houses

Container houses can achieve thermal insulation and heat preservation through optimized structural design, selection of high-performance insulation materials, enhanced sealing, and reasonable configuration of heating facilities. Specific measures are as follows:

1. Structural Design Optimization

Adopting a multi-layer composite structure is key to improving thermal performance. For example, residential container houses in Hohhot commonly use a three-layer structure: the outer layer is a 0.6mm thick galvanized sheet to resist wind and sand erosion, the middle layer is filled with 80 to 100mm thick rock wool as the main insulation layer, and the inner layer uses PVC-coated steel sheets to reduce thermal radiation. Some companies also add an elevated layer at the bottom of the container to block ground cold bridges, reducing indoor temperature fluctuations by about 40% compared to traditional color steel plate houses. Container houses in Baotou campsites use a bridge-cut inner lining structure, filling hard polyurethane foam between the steel frame and inner wall panels, and adding rubber insulation pads at the frame connections, reducing heat exchange efficiency between the inside and outside of the container by about 40%.

2. Insulation Material Selection

The thermal conductivity of materials directly affects insulation performance. For example, container homestay Apple Pods typically fill the wall interiors with high-density insulation materials such as rock wool or polyurethane, forming a multi-layer protective system with moisture barriers and ventilation layers. Residential container houses use a polyurethane foam layer over 50mm thick in the middle to block heat conduction, with inner fire-resistant gypsum boards and moisture barriers working together to control humidity and stabilize temperature. The national 'Technical Standard for Steel Structure Integrated Houses' requires the heat transfer coefficient of residential container walls to be ≤0.45W/(㎡·K), equivalent to 1.8 times the insulation efficiency of traditional brick-and-concrete walls.

3. Sealing Treatment

Sealing of door and window gaskets and joints is crucial. Insufficient sealing can lead to local condensation even with excellent insulation layer performance. For example, Qingdao Jiecheng Hongye's refrigerated containers adopt shipping standards, ensuring sealing performance through strict technical inspections to reduce equipment failure risks after arrival.

4. Auxiliary Facility Configuration

In extreme climates, auxiliary heating or cooling equipment is necessary. For example, container homestay Apple Pods maintain indoor comfort temperatures in extreme cold environments through auxiliary heating equipment; in high-temperature environments, reflective coatings and ventilation designs reduce indoor temperatures. Additionally, adjustable sunshade roofs and bottom ventilation slots significantly improve perceived comfort.