your OEM Partner Flat-dB acoustic underfloor heating system -37 db

Transcription

1 EN your OEM Partner acoustic underfloor heating system -37 db

2 EFFECT ON THE TRANSMISSION OF INDOOR NOISE Measurements of indoor noise on clay/cement mix floor in laboratory according to UNI EN ISO The experimentation began in May 2009 regarding the study of acoustic performance obtained with a radiant floor system realised with sandwich isolating panel, made up of a combination of materials. The purpose of the research was to find the combination of materials that allowed to optimise not only the heat performance of radiant floors but also the acoustic lowering of indoor noise. The entire experimentation lead to the development of the floor heating radiant system. RESEARCH PROJECT The research project, run inside the acoustic measurement laboratory was performed buy the Dipartimento di Fisica Tecnica of the University of Padua. The floor selected for the experiment is a clay/cement mix floor with suppression of lateral transmissions. The normalised indoor noise measurements are made in agreement with the part 6 of the UNI EN ISO 140 Standard. This document states the main considerations bases on the results obtained during the measurements, performed on the coupled product. The effect of the floor surface finishing was also evaluated in the measurements of indoor noise in the laboratory (keeping the floor packet constant), via measurements on non-covered concrete screed, on floating parquet floor laid dry and on ceramic tiles. Cement screed with thickness of 45 mm over piping and specific weight Kg/m 2 Lightened cement screed with thickness of 10 cm and specific weight 46.8 Kg/m 2 Clay/cement mix floor according to UNI :1990, UNI EN :2009 and DM 09/01/1996 FLOORING Pavimentazione CEMENT MassettoSCREED PIPING Tubazione MidiX FLAT-DB Pannello ISOLATING isolante europlus-silentium PANEL LIGHTENED Massetto alleggerito SCREED CLAY/CEMENT Solaio in laterocemento MIX FLOOR SET-UP IN LABORATORY Regarding the realisation of the set-up in laboratory, the radiant system has been installed on a lightened cement screed in-fill with thickness of 10 cm and polyethylene perimeter strips have been applied in proximity of the edges of the test frame. The ground-bearing floor in sand and cement was cast over the radiant system, complete with pipes filled with water at the working pressure, for a total of 65 mm. After three weeks from laying, the first measurement was taken on the unfinished floor. The dry floating parquet floor was the laid and the indoor noise was measured again. Finally, after the removal of the wooden covering, ceramic tiles were laid using traditional concrete glue and a new measurement was taken. The entire procedure was performed over the period of one month. The measurements relative to the bare floor were taken at the start and end of the entire experimentation. 2

3 The radiant system was installed on the lightened cement screed and double-flap polyethylene perimeter strips were applied in proximity of the edges of the test frame, making sure to turn the upper flap over the panel. The ground-bearing floor in sand and cement was cast over the radiant system, complete with pipes filled with water at the working pressure, for a total of 65 mm (45 mm over pipe). After three weeks from laying of the cement screed the first measurement was taken on the bare cement screed before the covering was laid. Successively, the dry floating parquet floor is laid and the indoor noise must be measured again. Finally, after the removal of the wooden covering, ceramic tiles were laid using traditional concrete glue and a new measurement was taken. 3

4 RESULTS On the basis of the data obtained, the normalised indoor noise level has been calculated L n [db] along with the evaluation index L nw [db] for each of the configurations being examined. The L nw values obtained, also in relation to the reference measurement on the bare floor, are given in table 1. Table 1 - Results obtained expressed as an evaluation index of the normalised indoor noise L nw [db] Sample Evaluation index of the normalised indoor noise L nw [db] Attenuation with respect to the bare floor [db] Bare clay/cement mix floor 92 - Cement screed Parquet Ceramics The system tested allows to reach Lnw values equal to 55 db (screed), 56 db (ceramics) and 48 db (dry parquet ), starting from Lnw = 92 db of the bare floor in the laboratory, with noise attenuation between 36 and 44 db, according to the finishing. 4

5 COMPARISON BETWEEN SURFACE FINISHINGS Figure 1 represents the spectral data of the normalised indoor noise relative to the measurements on bare concrete screed, with floating parquet floor laid dry on ceramic tiles, for the set-up tested, compared with the bare floor. Figure 1 material: measurements on bare cement screed, on floating parquet floor and on ceramic tiles. system - Indoor noise levels on clay-cement mix floor BARE FLOOR SCREED DRY PARQUET CERAMICS Frequency [Hz] The results show good functioning of the impact sound material under the screed, which allows to reduce noise on the entire frequency interval examined. The attenuation increases with the frequency, even if a resonance area is present in correspondence with Hz, with a probable influence on the mechanical and construction features of the type of clay/cement mix floor analysed. Dry floating parquet floor Regarding the effect of the surface finish, the presence of wooden parquet (laid dry on an uncoupling layer in corrugated cardboard, without gluing) greatly attenuates the indoor noise on the entire spectrum. The reason for such a marked improvement must be attributed, as well as to the uncoupling of the finish, to the type of blow that takes place between metal hammers of the normalised generator of impact and the wooden surface. The resonance in correspondence of 2000 Hz is present in a much less accentuated form and not very significant regarding global performance. In must be highlighted that if the parquet is glued directly to the screed, the noise levels should settle around the values detected in the other set-ups. Ceramics With the ceramic finishing the covering leaves the general of the system more or less unvaried, with an increase of the evaluation index of 1 db, to be attributed to a slight increase of levels in the 400 Hz-2000 Hz interval. 5

6 CLAY-CEMENT MIX FLOOR - BARE FLOOR Freq [Hz] L n ISO CLAY-CEMENT MIX FLOOR SYSTEM CEMENT SCREED Freq [Hz] L n ISO CLAY-CEMENT MIX FLOOR SYSTEM DRY FLOATING PARQUET FLOOR Freq [Hz] L n ISO CLAY-CEMENT MIX FLOOR SYSTEM CERAMICS Freq [Hz] L n ISO Results reducing the density of the layer of polystyrene Table 2 - Results obtained expressed as an evaluation index of the normalised indoor noise L nw [db] Sample Evaluation index of the normalised indoor noise L nw [db] Attenuation with respect to the bare floor [db] Bare clay/cement mix floor 92 - with 100 kpa polystyrene layer Cement screed Parquet Ceramics The system obtained by reducing the density of the expanded polystyrene layer with graphite (100 kpa instead of 140 kpa) gives acoustic performance that can be compared with the previously-tested system. Lnw values equal to 55 db (screed and ceramics) have been measured and 49 db (dry parquet), starting from L nw = 92 db of the bare floor in the laboratory, with noise attenuation between 37 and 43 db, according to the finishing.

7 your OEM Partner -37 db Description Insulation plate tacker panel Flat-db made of expanded polystyrene grades EPS with graphite, declared thermal conductivity λ: 0,030 W/mK (EN 13163; EN 12667). The insulation panel is coated on the underside with a granulated SBR-rubber sheat to give exceptional acoustic performances. The system was tested fully installed in laboratory, including pipes perimetral strip, and concrete, and tested compling to EN ISO To the insulation panel has been certified an acoustical step noise insulation DL w of -37dB compliant to EN ISO The upper side of the panel is laminated with high tear-resistant fabric-reinforced foil made of aluminized polyethylene (DIN EN ), with printed grid spacing 50 mm. The foil is one side overlapped appr. 30 mm to allow a safe junction of the boards and avoid concrete infiltration. Technical data Description High performance acoustic board: flat-db Product code Panel dimension (surface) 2000 x 1000 mm (2 m 2 ) Total thickness 32 mm (24 mm insulation board + 8 mm acoustic layer) Pipe diameter 16 : 20 mm Pipe distance grid Material Density Heat conduction l D Thermal resistance R D Multiples of 50 mm Expanded polystyrene sintered with graphite and coupled to a rubber fibre sheath 140 kpa W/mK 0.80 m 2 K/W Dynamic stiffness 19 MN/m 3 Reaction to fire system acoustic performance; index of evaluation of the pressure level attenuation indoor sound DL w on clay/ cement floor 20+5 in compliance with UNI :1990, EN :2009 and MD 09/01/1996 normalised indoor sound pressure level L n,w measured in laboratory on clay/cement mix floor 20+5 in compliance with UNI :1990, EN :2009 and MD 09/01/1996 Euroclass F 37 db (without covering)* 36 db (with ceramic tiles)* 44 db (with floating parquet floor)* * EN ISO 717-2; EN ISO (DFT) 55 db (without covering)* 56 db (tiles covering)* 48 db (floating covering)* * EN ISO 717-2; EN ISO (DFT) Certified acoustic The entire system, complete with pressurised piping, perimeter strip and any other accessory necessary for precision laying, has been laboratory tested in compliance with EN ISO on 20+5 cm clay/cement mix floor under the strict control of the Dipartimento di Fisica Tecnica DFT of the University of Padua. In this way it was possible, on the basis of the experimental values measured, to supply evaluation indexes ΔL w and L n,w in compliance with EN ISO that consider the real application and effect of a difficult floor like the clay/cement mix, which due to its non-homogenous constitution is outside of the use conditions of the acoustic reduction prevision form of the EN

8 Specific heat requirement 30 W/m 2 40 W/m 2 50 W/m 2 60 W/m 2 70 W/m 2 80 W/m 2 temp. C 20 C Environment temperature 5 K Heat difference Traditional screed thickness over pipe 45 mm Flow temperature on basis of UNI EN :2009; yield curves determined numerically by the DFT of Padua in compliance with UNI EN and obtained experimentally in compliance with UNI EN by the WSPLab laboratory in Stuttgart pitch cm > e.g. ceramics m 2 K/W m 2 K/W e.g. parquet m 2 K/W m 2 K/W m 2 K/W e.g. wood m 2 K/W in compliance with Standard m 2 K/W floor t. 10,8 W/m 2 K Hot floor alpha according to UNI EN :2009 and UNI EN :2009 Average surface temperature at the floor pitch cm > e.g. ceramics m 2 K/W m 2 K/W e.g. parquet m 2 K/W m 2 K/W m 2 K/W e.g. wood m 2 K/W in compliance with Standard m 2 K/W W/m 2 20 C Underlying temperature 0.77 m 2 K/W Design heat resistance according to UNI EN ISO of the component in expanded polystyrene sintered with graphite ( 32). The corrective factor F T =1,034 (UNI EN ISO 10456) as been applied to the heat conductivity declared l D of the polystyrene layer of the panel. W/m 2 lost according to UNI EN :2009 pitch cm > e.g. ceramics m 2 K/W m 2 K/W e.g. parquet m 2 K/W m 2 K/W m 2 K/W e.g. wood m 2 K/W in compliance with Standard m 2 K/W Emission yield pitch cm > e.g. ceramics m 2 K/W m 2 K/W e.g. parquet m 2 K/W m 2 K/W m 2 K/W e.g. wood m 2 K/W in compliance with Standard m 2 K/W Note: [2,10 m 2 K/W] Heat resistance of the elements under the radiant floor panel consisting of: 8 cm of plant covering with material having heat conductivity of 0.05W/mK; floor with heat resistance of 0.37m 2 K/W; 15 mm plaster with heat conductivity of 0.7W/mK; exchange coefficient with air at= 9.3W/m 2 K

9 Flow temperature 14 C (51%*) 15 C (56%*) 16 C (60%*) 17 C (64%*) 18 C (68%*) 19 C (71%*) * in compliance with UNI EN the flow temperature must not be lower than 1K below the dew point temperature value, calculated on the environment conditions if a dehumidification system is present. (for example: with 26 C in environment and relative humidity of 51%, the dew point temperature is equal to 15 C; the flow temperature can be 14 C, but not lower) W/m 2 26 C Environment temperature, 45 mm Traditional screed thickness over pipe 2,0 K Heat drop determined supposing hot and cold ratio requested equal to 2.5:1 W/m 2 according to UNI EN :2009 pitch cm > ceramics m 2 K/W parquet m 2 K/W wood m 2 K/W in compliance with Standard m 2 K/W floor t. 6.5 W/m 2 K Cold floor alpha according to UNI EN :2009 Average surface temperature at the floor pitch cm > ceramics m 2 K/W parquet m 2 K/W wood m 2 K/W in compliance with Standard m 2 K/W = values with formation of condensate on the floor whenever 75% r.h. is reached in the environment, even only temporarily = values with formation of condensate on the floor whenever 70% r.h. is reached in the environment, even only temporarily = values with formation of condensate on the floor whenever 65% r.h. is reached in the environment, even only temporarily 9

10 granule Entirely made by rubber granule obtained by the recovery of tires and a binder based on noble polymers in dispersion water. The compoundrubber polymer is supplied ready for use, enables a yield of 6 kg/m 2 per cm of thickness of floor level. On request it is possible to have the delivery of the product to be mixed on site. Premixed bulk rubber for vibration insulation, impact noise and footstep noise. Description By a patent PIRELLI & C., the only product in rubber bulk that guarantee excellent insulation performance in the realization of insulation systems in floating mass. Laying The mattress in rolls have different problems in the application on curved and irregular surfaces. Due to its granular and bulk texture can be applied in direct contact with curved and irregular surfaces. Used in combination with specific products accessories, it contributes to the realization of a surface with an high damping. Precautions and Safety The product is not a substance or preparation dangerous, therefore is not subject to the obligations fixed by Directive 67/648/CEE. The compound does not contain harmful substances such as formaldehyde, fluorine carbides, mercury or similar and the normal state does not emit toxic fumes. Conservation Keep away from direct sunlight. Technical data Thickness mm min. 10 / max. 15 Packaging kg 22 Yield per pack m 2 3,5 Nominal density Kg/m Consumption per m 2 Kg/cm 6 Dynamic stiffness MN/m 3 UNI EN ISO < 20 Compressibility UNI EN < 10 % Fire resistance DIN 4102 B2 Temperature resistance from -20 to +100 C Chemically neutral Excellent resistance to acids and bases Good electrical insulation 10

11 granule User instructions 10 mm Deploy the granule on the surface you want to insulate, thus creating a min. 10 mm heightlayer. Then use a wet trowel for compacting the compound. 24 h ALU Let dry the material for min. 24 hours. See drying table below. Thickness 10 mm 24 h 48 h Thickness 10 : 15 mm 48 h 72 h As last cover the product with the aluminiumgrid foil of the insulating board, or with similar polyethylene foil. Then you can go on building the screen for the flooring. 11

12 Enetec Ecoform srl Via Pillhof, Frangarto (BZ) Italy PLANT ENETEC Via Pillhof, 89 I Frangarto (BZ) T F mail@enetec.info PLANT ECOFORM Via Luigi Ciocca, 74 I Quinzano d Oglio (BS) T F mail@enetec.info OFFICE GERMANY Erzbischof-Bruno-Str. 20 D Xanten T M export@enetec.info