For calculating weight of lkk choose the program weight program lkk. The programs discharge tab defaults to the appendix e attenuation values for a small sound attenuators are manufactured in many varieties, module sizes and materials, including nofill models and models that eliminate acoustical fill entrainment into the air stream. Silencer lengths will be chosen to suit your acoustic, space andor pressure loss requirements automatically selected by asi aeroacoustic proprietary computer program. Sterbinove vyuste trox austria gmbh organizacni slozka. Since our ears respond on a logarithmic scale, most audio attenuators have a log response, also called audio taper. The sound wave generated by these sources transfer its energy throughout the duct and to the occupants area as shown below. L i l o p factor rectangular 1 x d silencer not less than 0. Welcome to the acoustique calculation according vdi 2081. The extraordinarily space saving trox combination diffuser vsd501lt with integrated crosstalk sound attenuator can be installed into lightweight partition walls. Shop harrison labs db rca line level audio attenuator pairs or parts express inline coax cable tv signal atteunators.
L i l o p factor circular or conical silencer with center body diameter equal to fan hub size 0 0 1. The attenuation from the terminal to the room is 5 db. Find here information of sound attenuator selling companies for your buy requirements. L pa3 dba aweighted sound pressure level of caseregenerated noise of the vav terminal unit with acoustic cladding, system attenuation taken into account. Absorptive silencers are designed to provide solutions to noise control applications by providing several variations of internal geometrics. Splitter sound attenuators of type xsa used for the reduction of fan noise and air regenerated noise in air conditioning systems. Hi guys i have a bit to much gain in my system at the moment. The control components attachments include a differential pressure transducer that transforms the differential pressure effective pressure into an electric signal, a controller, and an actuator. Attenuators and loose splitters of all types are made to order at our manufacturing facility, with no limitations on size and material. The location of a sound attenuator can also greatly impact both attenuation and pressure loss. Trox australia pty ltd level 32 101 miller street north sydney 2060.
The relevant calculated requirements to be placed on the sound attenuator are. Materials available include pregalvanised steel, stainless steel, marinegrade aluminum alloy. Sound attenuator test run the test run, a doublewalled, sound insulated and airtight stretch of channel, is attached to the reverberation chamber. With the introduction of vdi 6022, specific hygiene requirements for room air conditioning systems were required for the first time. The restriction of the attenuator is defined in pa of static pressure loss. This simpleinterface software has been developed to ease the selection of components using intuitive dropdown menus. Rectangular attenuators and splitters trox asia pacific. Sound attenuator engineering data sheet a division of metal form manufacturing installation guidelines vaneaxial fan. This type of grille construction and installation detail is designed to meet latest home office requirements.
Each silencer model has been developed to maximize insertion loss while minimizing system pressure drops. Find out more about the new rfd swirl diffuser with the sirius plenum box bringing together four functions in one product. Trox gmbh confirms that the current trox easy product finder software epf and its updates can be downloaded and used free of cost. The module calculates the sound attenuation required that can be achieved either by a sound attenuator or by increasing the duct attenuations. Attenuator pressure loss a sound attenuator restricts the passage of air flow through it. For this purpose, trox provides technical data sheets or specific software. Sound power and sound pressure are different in that sound power is a. Operating system support the following operating systems are supported. I wanted to gain more volume control and reduce noise. The pressure loss of the attenuators in this catalogue is. Our noisereducing attenuators are developed for fan units and other equipment within heating, ventilating and air conditioning, also known as hvac systems. This includes free field and inside rooms sound calculations, room average sound absorption coefficient, pressure drop for extended ducts and splswlair. Easy product finder selection programme trox middle east llc.
Splitters and splitter attenuators from trox are certified for use in room air conditioning systems in accordance with vdi 6022 parts 1 and 3, din 1946 parts 2 and 4 and vdi 3802. I bought a cheap pair of attenuators monacor ila1020 passive level attenuator pair, 212840 wanted to test with a cheap basic pair before i looked at the likes of. Generally mounted within the systems ductwork, they ensure that a specific noise criteria is achieved within the internal or external areas they are installed in. Lkr is a square sound attenuator with circular end spigots. K 75 mm a 100 mm c iso mm d 175 mm g 200 mm w x h width height height in itv1l or inches width in mm or inches ft2a 1200 x 600 refers to. The pressure loss of the attenuators in this catalogue is charted in two different ways.
The channel has a part where the channel width can be varied, which means that sound attenuator elements splitters of different widths and distances can be tested. Aweighted sound pressure level of caseregenerated noise of the vav terminal unit, system attenuation taken into account. Industrial silencers choose the hvac noise control silencer to meet your acoustics, energy efficiency or space constraint requirements. To comply with a specified noise level, sound attenuators. Trox products for ventilation and air conditioning technology. Full details of the attenuator configuration ill b epr ovided y trox th cus mer n the order is confirm d. The vav terminal unit is fitted with a differential pressure sensor for measuring the volume flow rate. Contact verified sound attenuator manufacturers, sound attenuator suppliers, sound attenuator exporters wholesalers, producers, retailers and traders in india. For applications such as prison cells where it is necessary to have a heavy and robust construction and a high level of tamper resistance.
In ventilation systems, noise stems from a variety of components such as the fans or the fire dampers. One common mistake is to locate a sound attenuator too close to a fan. It is placed just downstream of the fan and, due to the clever air distribution, creates a much lower pressure drop while at the same time reducing the sound power level. Modules will be sized to your x or y dimension, no transition required. Noise generation and noise reduction in air conditioning systems. It provides a wide offer of fans, coils, sound attenuators, filter sections and every additional one is configurable by users. With this program you can calculate generated noise and attenuation for components of a. For selection and dimensioning of chilled beams use the program auracool. Sound attenuator test run trox south africa pty ltd. Sound attenuators improve, obviously, the acoustics. Sound attenuator without data airmaster equipments emirates. For high insertion loss with broadband damping, even in the highfrequency range. Sound attenuator attenuator length i 2 600 mm 3 900 mm 4 1200 mm 5 1500 mm 6 1800 mm 7 2100 mm 8 2400 mm airway width a few examples.
Sound attenuators should generally be located as close to the noise source as possible, but far enough away to have a uniform, laminar profile of air flow. It is also available as a combined supply and extract air configuration. We are one of the largest manufacturers of attenuators in the uk, currently supplying about 60,000 units annually. Yahus by trox configures, calculates and selects tbsec units.
Easy product finder selection programme trox india private limited. For increased insertion loss and broadband attenuation even in the low frequency range. Commercial acoustics sound attenuators are manufactured in many varieties, module sizes and materials, including nofill models and models that eliminate acoustical fill entrainment into the air stream. Included in the attenuator selection computer program. Since most audio equipment is stereo, the most common kind is a dual gang type, which bonds two attenuators together. Refer to the rtqs series for applications where moisture may be present in the air stream. The relevant calculated requirements to be placed on the sound attenuator are used to make the optimal choice in particular, with respect to the price. Calculate the attenuation in unlined and lined ducts. Rtqs series rectangular qseal attenuators the rectangular qseal attenuator includes the qualities of.
Trox gmbh retains all rights to work on and modify the software. Attenuation due to end reflection is entered below. Sound attenuators noise reduction for hvac duct systems. Available with a centre pod for extra high attenuation and with flange connection. Dimensions, pressure drop and sound attenuation to suit every requirement.
H 1800 mm and l 2100 mm the modular sections of the attenuators will be supplied as loose items to site to be installed by others. Osal osacp sound attenuators improving your environment osacp cylindrical sound attenuators function osacp is a circular sound attenuator for use in circular ducts with 100 mm glass wool insulation for optimum sound attenuation. Every audio system needs at least one volume control, or attenuator. Here programs for dimensioning of our attenuator products can be downloaded. From dimension o315 and up, all sound attenuators are equipped with a centre baffle.
283 576 1512 174 1085 442 1035 1460 555 1310 436 639 118 946 659 209 150 81 256 66 1375 1048 857 1105 1001 394 522 313 97 340 1307 437 205 61 1347 325 782 114 1 407 4 906 347 662 268 705