For better temperature insulation, as well as for practical reasons, most modern cold rooms are made out of insulated panels.
They have the following characteristics:
- good mechanical resistance
- facilitates cleaning thanks to special fins and sanitation profiles, applied both on vertical joints (between walls) as well as on the horizontal ones
- good tightness
- very good thermal insulation
Choosing the type of coverage for refrigeration panels is done by taking into account the recommendations of the manufacturer as follows:
- for production areas where environmental acidity is high (milk processing, smoking and drying rooms etc.) panels covered in stainless steel sheet will be used
- for storage areas where cargo is packaged galvanized and painted panels (possibly plasticized) will be used
- for storage areas where cargo is packed in boxes galvanized panels will be used
For spaces with negative temperatures pressure compensation valves are provided to avoid blocking access doors due to low pressure in the cold room.
Specifications of Insulated panels:
- destination: food industry
- insulating material: rigid polyurethane foam
- polyurethane foam density: 41 kg/m3
- heat transfer coefficient l: 0,023 W/m
- thickness: 30, 40, 60, 80, 100, 120, 150, 180, 200, 240 mm
- cover: galvanized steel, powder coating
- RAL9010 white (paint approved for food
- or ANSI 304 2B stainless steel for food industry
- paint film thickness of 30 μm
- sheet thickness: 0.4 – 0.6 mm
- panel width: 1 – 1.16 m
- length: minimum 2 m; maximum 14 m
- sealing: by special seals (silicone not requiring)
- joining: tongue and groove
- fire resistance: Class C1
Specifications of refrigeration door for cold rooms:
- according to current regulations for the food industry
- key lock on the outside
- “inside man” protection on the inside
- rigid polyurethane foam insulation (same characteristics as the panels)
- aluminum frame for food industry to reinforce the door leaf
- reinforced hard PVC frame
- frame grip is made with special systems to avoid thermal bridges
- negative temperatures doors are provided with heating resistance in the frame, floor protected by a stainless steel threshold
- sealing is done with two special rubber gaskets with very good thermal and mechanical resistance (one outline and one threshold)