Are Container Houses Very Hot?

Container houses are not necessarily very hot; their temperature conditions depend on factors such as thermal insulation treatment, ventilation design, and temperature control equipment configuration. Here is a detailed analysis:

Thermal insulation treatment is crucial
The metal shell of container houses has a low specific heat capacity and high heat transfer efficiency. Without thermal insulation treatment, they are prone to absorbing heat in hot climates, leading to stuffy indoor conditions. However, significant improvements can be achieved through professional modifications. For example, adopting a three-layer structure consisting of an outer anti-corrosion color-coated steel plate, an intermediate layer of over 50mm polyurethane foam, and an inner fire-resistant gypsum board, the wall heat transfer coefficient is ≤0.45W/(㎡·K), and the thermal insulation efficiency can reach 1.8 times that of traditional brick-concrete walls. Measured data shows that in summer, the cabin temperature rises 22 minutes slower than the outdoor temperature at noon, and in winter, the indoor temperature only drops by 1.3℃ after being sealed for 8 hours, providing a more stable body feel.

Ventilation design affects body comfort
A reasonable ventilation system can accelerate heat exchange and avoid stuffiness. For example, installing adjustable sunshades on the top of containers, installing ventilation slots at the bottom, or adopting a double-layer container structure to form an air convection layer can effectively reduce indoor temperature. In addition, optimizing the design of windows and doors (such as using double-glazed windows and adding sealing strips) can reduce heat leakage and improve thermal insulation performance.

Temperature control equipment can regulate temperature
The configuration of equipment such as air conditioners and graphene floor heating can actively regulate indoor temperature. For example, in the container dormitories of the Asian Games, despite the heat absorption of the containers themselves, basic comfort can still be maintained with air conditioners; and a certain café in Mogan Mountain keeps the indoor environment cool without turning on the air conditioner even under direct sunlight at noon by using aluminum foil reflective sandwich panels in conjunction with air conditioners.

Materials and craftsmanship determine performance
Using Class A fire-resistant materials such as rock wool boards and fire-resistant cotton as fillers not only improves fire resistance but also enhances thermal insulation. At the same time, construction details (such as the sealing treatment at the joints of thermal insulation materials and the firm combination of the thermal insulation layer with the structure) also affect the overall thermal performance.