Uniform temperature control serves as the core guarantee for cross border cold chain transportation. The smoothness of internal air circulation directly governs the storage and transit condition of temperature sensitive cargo including fresh produce, frozen goods and pharmaceuticals. Ordinary enclosed containers are prone to airflow blockage and abnormal local temperature deviations. By contrast, standard reefer containers adopt dedicated structural designs to substantially improve internal ventilation and heat exchange conditions. As a core auxiliary structure of reefer containers, the T type floor acts as a critical component ensuring full coverage cold air circulation. It optimizes internal airflow logic from the bottom to satisfy temperature control requirements for long haul multimodal transport.

Reefer containers adopt a bottom air supply circulation pattern, different from the top air outlet configuration of conventional equipment. Strip shaped groove channels on the T type floor form well defined air ducts. Cold air discharged by the refrigerated unit is first channelled into floor grooves and spreads evenly across the entire bottom area of the reefer container, avoiding airflow dead zones caused by obstruction from cargo pallets. This bottom air distribution design enables cold air to spread across the full scope inner base of the container, laying the foundation for subsequent vertical air circulation and suiting full load shipping scenarios.

Once air diffusion is completed, cold air rises naturally driven by temperature difference. It passes through gaps between cargo layers for progressive heat exchange and fully absorbs heat surrounding the goods. Air then flows back to the refrigerated unit at the top of the container, forming a complete closed loop circulation system. The T type floor of reefer containers stabilizes airflow paths and prevents cold air accumulation near the unit outlet. It balances airflow velocity across the front, rear, upper and lower zones inside the container, mitigates internal thermal stratification and sustains overall temperature consistency.

During prolonged cross border transit, container vibration and cargo stacking patterns may undermine airflow stability. The integrated T type floor of reefer containers delivers outstanding structural regularity and air permeability. Resistant to air duct blockage induced by regular cargo stowage or pallet compression, this structure consistently maintains stable cold air circulation, reduces cargo losses triggered by locally elevated temperatures, and adapts to varying operating conditions in long haul scenarios such as sea and land transportation.

The specialized structural design of the T type floor optimizes the internal heat exchange system of reefer containers and builds a stable, even and dead zone free internal airflow environment. A well designed cold air circulation mode enhances temperature control stability of reefer containers and lowers the risk of cargo loss in long distance cold chain shipments. It provides reliable structural backing for cross border transport of various temperature sensitive commodities.

CIMC Qingdao Refrigeration Industrial Base was established in 1999. It is dedicated to designing and manufacturing ISO-standard reefer containers and producing customized refrigeration and insulation specialty products. Its customers span major global logistics systems, including North America, Europe, Asia, and Australia. The base's products cover application scenarios across the "sea, land, and air" supply chain systems, providing full-process equipment manufacturing solutions for cold chain equipment — from pre-cooling at production origins and manufacturing to midstream logistics transportation and last-mile warehousing. For more information about our reefer container, we warmly welcome your inquiry.

Address: No. 66-68 Xiangjiang Road, Jiaozhou City, Qingdao, Shandong Province

Telephone: +86-532-86687388/+86-532-86687636(Aviation Container)

E-mail: customer_service@cimc.com yunfeng.bi@cimc.com (Aviation Container)

Website: www.qdcimc.com