Thermal Insulation: Cold Storage Rooms Insulating Panels

Internal and external partitions as well as roots of refrigerated enclosures will consist of prefabricated insulating panels
Panel is approximately 1.20 m wide and its height adapts to room height so the horizontal unions or jointing strips are suppressed. It is basically formed by rigid polyurethane injected between tow steel plats. Final density is 35 to 40 kg/m³ and conductibility is approximately 0.020 kcal/hm^oC.
Insulation thickness is 100 mm in cold rooms at 0⁰C and 60 mm in handling areas.
Steel plates enclose insulating material 0.6 mm thick and galvanized on both sides. In addition to galvanizing, panel exteriors are lacquer-coated after degreasing.
Plates are ribbed thus achieving a good rigidity, which, at the same time allows their expansion.
Panels are affixed on site, side by side, by coupling edges with galvanized steel jointing strips, fastening them with cadmium steel screws and polyamide bushing to avoid heat bridge.
Polyurethane is pressure-injected into jointing strips to achieve a perfect continuity of insulation in the whole enclosure.
The set of panels is fastened to building frame by means of pieces which act as a strength-giving element and at the same time allow movement of frame.
This method allows the construction of rooms without internal pillars and with good strength characteristics and is supported by the International Building Standards

Cold room doors:

Access doors to cold rooms will be slide type with manual opening metallic construction, single leaf, internal and external finish in galvanized steel plate lacquer coated. Emergency opening system from inside.
Doors include an electric heater in frame and an air curtain consisting of PVC strips to make difficult air circulation.
Each room will be fitted with a door dimensions of approximately 1.80 x 2.60 m for cold rooms.
Each door will be protected with metallic, guards against bumps from electric lift trucks.

External cladding:

External cladding of handling room and general service will consist of steel plates with vertical ribs, matching the design and colour of remaining panels forming building walls and roofs.
Access to handling and services area will be through a metallic insulated bascule door, manual opening and closing approximat5elly of 3 x 3.50 m free opening.

Floor insulation:

Floor of cold rooms will be insulated with rigid polyurethane slabs 80 mm thick.
Insulation will be reinforced with the corresponding vapour seat to prevent moisture entering from subsoil