We are able to perform the calculation of the Total Thermal Transmission (Uf) with the numerical method, according to UNI EN ISO 10077-2:
The EU Regulation No.305 / 2011 (CPR), requires to characterize the thermal insulation performance of an insulated door, installed in an air-conditioned building. This value is required by the “technician” who calculates the energy needs of the building, to characterize the ENERGY EFFICIENCY CLASS. To this targhet, it is necessary to determine the value of the “OVERALL THERMAL TRANSMITTANCE” (Uf)) of the installed door.This must not be confused with the declaration of the thermal transmittance of the single component (insulated panel or profile) or of the insulating material (polystyrene or polyurethane) borne by the manufacturer himself. To achieve this purpose, you must: 1) identify all the types of components used in the construction of the door (profiles, panels, guides and related materials); 2) to characterize all the nodes of the door, creating CAD drawings; 2) determine the physical characteristics of the materials used; 3) to determine the Conductivity value (Lf2D), characteristic for each node, by numerical analysis (we made with the software certified FRAME SIMULATOR); 4) tabular data obtained in our PIUGEN-KT software. This software, customized to the specific characteristics of the product in question, is able to determine the exact value of the OVERALL THERMAL TRANSMITTANCE (W mq / ° K), to vary the LxH dimensions and the types of installations carried out (in light / over light ), as well as to discriminate the different types of components used (guides, profiles, materials, veils, bins, etc.). Below are some indicative images of a work done for a manufacturer of insulated rolling shutters.
Built and installed in the production plant of CARINARO (NA), of the AZ PERASOLE company, a fast shutter having the following characteristics: L = 8150 mm H = 4500 mm DP77 aluminium curtain – 6/10 + endcaps and rolling wind brackets 2C70x2 steel pressed guide Total curtain weight = 320 kg Nr.6 Nylon inside belts Friction 20% Wind resistance: class 3 Rolling tube Ø219.1×5.9 Curtain roller Ø 450 mm Mooving max torque = 487 Nm Motor with inverter type SI 50.80 FU + control unit TS971 + CEDES optical light curtain Mooving Brackets SG115 Bearing SY55 Max linear speed = 1.4 m/sec The shutter complies with the safety requirements required by UNI EN 13241-1 and has high performances of: – resistance to wind and burglary, thanks to the ROLLING hooks on the staves of the mantle; – thermal and acoustic insulation, thanks to the insulated profiles DP77 in aluminum and to the internal nylon straps; – resistance to wear, thanks to the presence of oscillating shelves that allow the sliding of the mantle always on the </ span> vertical of the guides. The automation with an integrated inverter on the engine, of the GFA Elektromaten brand, guarantees durability at the highest levelswith a high number of cycles / hour. The anti-collision safety with the mantle is guaranteed by the 50-spoke CEDES barrier, installed on the back of the guides with spokes passing through the stroke line, directly connected to the TS971 control panel.
We would like to thank the companies AZ PERASOLE and MASINARA, for having accepted the innovative imposition we have proposed.
The need to construct new buildings or modernize existing ones with greater energy efficiency, together with greater burglar security, finds a valid solution, for technical closures, in high-speed insulated rolling shutters. Thanks to the action of innovation, research and development, carried out by us and the collaboration with the Italian company MASINARA Spa, commercial components have been realized that allow to give industrial roller shutters greater speed performance, thermal insulation, wind resistance and resistance burglary. The high-speed insulated shutters are a valid alternative to the use of PVC folding fast doors (often installed outside the industrial buildings, together with folding doors). On the insulated profiles of the curtain can be installed the rolling windproof brackets that, together with special double C guides, give the rolling shutter a class 4 wind resistance (UNI EN 12424). We have grouped, in the following movie, some achievements made by some companies, our customers, to whom we wish great successes.
The MASINARA company, of Monteveglio (BO), carried out wind resistance tests on the “rolling system”, in combination with the the most popular shutters profiles, tested at 9 and 12 meters widts (never tested before). The tests were carried out by the prestigious European certification laboratory: TUV Nord Germany, according to the method test required by UNI EN 12444. The following table shows the models, materials and results obtained.
POS
TIPO
MODELLO
PASSO
SPESSORE
FINITURA
CLASSE
LARGHEZZA
VENTO
LUCE
CERTIFICATA
mt
1
MONO
P115
114
8/10
ACCIAIO ZINCATO
+/- 2
12
2
MONO
P115
114
7/10
ACCIAIO BUGNATO
+/- 2
12
3
MONO
P115
114
12/10
ALLUMINIO BUGNATO
+/- 2
9
4
MONO
P97
97
8/10
ACCIAIO ZINCATO
+/- 1
12
5
MONO
P97
97
7/10
ACCIAIO BUGNATO
ROTTURA 262
12
6
MONO
P97
97
12/10
ALLUMINIO BUGNATO
ROTTURA 247
12
7
DOPPIO
DP77 Perasole
77
5/10
ACCIAIO PLASTIFICATO
+/- 2
12
8
DOPPIO
DP77 Perasole
77
5/10
ALLUMINIO PLASTIFICATO
+/- 2
9
9
DOPPIO
DP90 Biorol
90
5/10
ACCIAIO ZINCATO
+/- 2
12
10
DOPPIO
DP95 Taraborelli
95
6+4/10
ACCIAIO PREVERNICIATO
+/- 2
12
11
DOPPIO
DP95 Taraborelli
95
6+6/10
ALLUMINIO PREVERNICIATO
+/- 1
12
The resistance values for smaller widths will be obtained by linear interpolation on graphs present in the “test report” issued by the TUV. The resistance classes comply with UNI EN 12424 and can be indicated in the DoP certification (CPR 305-2011) issued by the manufacturers of rolling shutters with cascading contract, issued by the MASINARA company of Monteveglio (BO).
The resistance tests of the mooving brackets SG85 (from 7.5 kN) and SG115 (from 115 kN) were carried out in the laboratory of the Mechanical Engineering Department of the Polytechnic of Bari, in the presence of the TUV Nord Germany. The mooving brackets were largely within the safety limits established by UNI EN 12604.
The design of all the components was taken care of by Piumelli Pantaleo (PIUTEK) – Bisceglie (BT). The design and construction of the test benches and the support for carrying out the tests was provided by the company BLM Costruzioni Meccaniche di Conversano (BA). The construction and marketing of the components (patented) will be carried out by the company Masinara of Monteveglio (BO).
We are able to carry out TRACTION TESTS on profiles for rolling shutters.
In order to be able to determine the vertical resistance of the profiles for the construction of shutters of rolling shutters, we have created, in collaboration with the mechanics laboratory of the Polytechnic University of Bari, a special equipment, which can be installed on a test machine, in order to determine the behavior of the various profiles, subjected to traction. This test allows us, subsequently, to determine the limit of use of the various profiles, depending on the shape, thickness and material. The technical file is thus enriched with a fundamental data for the choice of the various profiles according to the conditions of use, providing the manufacturer with a technical tool that makes the cost of the finished product more competitive. Watch the videos of the tests carried out and contact us for further information.
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