Refrigeration doors or cold room doors are necessary for low-temperature warehouses and refrigerated chambers, due to thermal insulation properties. In this blog, we discuss the various types of cold room doors, and how to select the right option for your industrial application.
The main purpose of doors for cold rooms is to provide the thermal insulation of the doorway through which the products are loaded and unloaded. The doors should reduce thermal bridges to a minimum, and maintain the temperature conditions in the refrigerated chambers.
When choosing doors, it is important to select the right type of door and its technical characteristics, such as size and insulation thickness, as well as any operating conditions required in the refrigerated chambers for loading and unloading.
The different types of refrigeration doors include hinged doors (swinging doors), sliding doors, and vertical doors. Typically, these are selected during the process of structural design of the cold rooms. The choice of door is determined based on its dimensions, space limitations, temperature requirements, and operating conditions.
Specifiers who include Isowall in their design brief can be confident that they have chosen the most extensively tested and proven panel system in the marketplace. All enquiries will be dealt with by our experienced and friendly staff who will give you prompt and courteous service.
For example, it is convenient and recommended to use swinging doors for small doorways, sliding doors for large doorways and intensive operation, while the vertical, guillotine-type doors are best used when it is impossible to install the more common types.
Furthermore, the hinged and sliding doors for refrigerated chambers differ depending on the temperature regime, medium (from 0 0С and above) or low temperature (from -15 to-25 0С and below). Low-temperature doors must be equipped with a built-in heat tracing cable to prevent the freezing of panel to the door frame.
As a rule of thumb, the thermal insulation thickness of refrigeration doors depends on the specific use and can range from 60 to 160 mm. The standard thickness for medium-temperature cold rooms is 60-80 mm, and for low-temperature cold rooms is 100-120 mm. For low freezing temperatures under -30-40 0С, a heat-insulating thickness of 140-160 mm is recommended.
Hinged or sliding, and with or without sills, Isowall doors are manufactured to cover most industrial applications. Refrigeration doors are available in a variety of finishes such as Chromadek, fibreglass, stainless steel, checker plate etcetera.
Isowall manufactures an extensive range of standard and custom designed doors to suit every application. Isowall doors are locally manufactured from Isowall panels and are set into a heavy-duty fibreglass channel frame, providing access to controlled environments. Click here to find out more.