Temperature control in warehouse with internal and external heat rejections

The warehouses are important places to save goods. In order to ensure the safety of goods, the requirement of temperature control is relatively strict in warehouse. A few studies are conducted on both internal energy savings through air conditioning or ventilation systems and external energy savings through coatings, vegetation, and water sprinklers in warehouses. In addition, the previous studies have not explored the interactions of both energy savings in warehouses. In this study, CFD, supplemented by inverse numerical methods and experimental data, is used to study a double-pitched warehouse model with both internal and external heat rejection measures. The inverse CFD simulation combined with experimental data is used to predict the unknown heat transfer rate, the appropriate turbulence model, the cavity the flow fluid and heat transfer characteristics, the air temperature contours and velocity patterns and in the model under different shelf configurations or thermal barriers such as interlayer and external insulation cavity. Different turbulence models are used to simulate this problem. When the stainless steel cavity for heat insulation is added, a temperature drop of 2–16° can be observed in all parts of the warehouse. It is recommended to use a shelf interval of 30 mm to ensure that there is enough width between the shelves to allow the stacker and warehouse personnel to pass through them, and to provide the possibility of multi-channel simultaneous operation. The heat convection coefficient can be significantly reduced by 70% when using partitions on the roof as mezzanines. Adding insulation cavities can significantly reduce the amount of incoming heat transfer by 31%.