"Development, production and experimental verification of an acoustic louvre maintaining sufficient noise suppression in critical octave bands. On the basis of earlier research two dimensional models of the louvre were considered as optimal. First model : size of louvre 1000 x 700 mm, length 300 mm, ratio of blade thickness and distance between the blades 5:4. Second model : size of louvre 1200 x 700 mm, length 300 mm, ratio of blade thickness and distance between the blades 2:3. The coefficient of dynamic pressure loss \u03BE in both model does not exceed 2.4. Spectral analysis confirmed an increase of the quality factor of the louvre. This type of louvre can be used namely in ventilation inlets and outlets of air from noisy spaces."@en . "Protihlukov\u00E1 \u017Ealuzie"@cs . "Z(MSM6840770011)" . "[8BE911481907]" . "2"^^ . . "Ku\u010Dera, Miroslav" . "Protihlukov\u00E1 \u017Ealuzie" . "\u00DA 12116, FS, \u010CVUT" . "RIV/68407700:21220/08:02151395!RIV09-MSM-21220___" . . "noise of HVAC equipment, absorption noise damper, noise in ducts, noise in boiler rooms"@en . . . "Prvn\u00ED varianta: Rozm\u011Br tlumi\u010De 1000 x 700 mm, d\u00E9lka 300 mm., po\u010Det kulis 6. Tlum\u00EDc\u00ED kulisa ve tvaru rozev\u0159en\u00E9ho p\u00EDsmene V, jeho\u017E \u00FAhel je 135\u00B0. N\u00E1b\u011B\u017En\u00E1 hrana kulis zkosena pod \u00FAhlem 45\u00B0. Tlou\u0161\u0165ka kulisy je 80 mm, mezera mezi kulisami 62 mm." . "2"^^ . . . . . . "V\u00FDvoj, v\u00FDroba a experiment\u00E1ln\u00ED ov\u011B\u0159en\u00ED protihlukov\u00E9 \u017Ealuzie s n\u00EDzk\u00FDmi tlakov\u00FDmi ztr\u00E1tami za sou\u010Dasn\u00E9ho udr\u017Een\u00ED dostate\u010Dn\u00E9ho \u00FAtlumu hluku v kritick\u00FDch okt\u00E1vov\u00FDch p\u00E1smech. Na z\u00E1klad\u011B p\u0159edchoz\u00EDho v\u00FDzkumu byly jako optim\u00E1ln\u00ED \u0159e\u0161en\u00ED navr\u017Eeny dv\u011B rozm\u011Brov\u00E9 varianty uspo\u0159\u00E1d\u00E1n\u00ED tlumi\u010De. Prvn\u00ED v\u00FDhodn\u00E9 proveden\u00ED, rozm\u011Br tlumi\u010De 1000 x 700 mm, d\u00E9lka 300 mm pom\u011Br tlou\u0161\u0165ky kulisy v\u016F\u010Di velikosti mezery mezi kulisami 5 : 4, druh\u00E9 v\u00FDhodn\u00E9 proveden\u00ED, rozm\u011Br tlumi\u010De 1200 x 700 mm, d\u00E9lka 300 mm pom\u011Br tlou\u0161\u0165ky kulisy v\u016F\u010Di velikosti mezery mezi kulisami 2 : 3. Sou\u010Dinitel m\u00EDstn\u00ED ztr\u00E1ty \u03B6 nep\u0159evy\u0161uje v obou p\u0159\u00EDpadech hodnotu 2,4. Provedenou spektr\u00E1ln\u00ED anal\u00FDzou bylo potvrzeno zv\u00FD\u0161en\u00ED \u010Dinitele kvality tlumi\u010De. Obecn\u00E9 uplatn\u011Bn\u00ED tohoto technick\u00E9ho \u0159e\u0161en\u00ED nalezne uplatn\u011Bn\u00ED zejm\u00E9na u aera\u010Dn\u00EDch v\u011Btrac\u00EDch otvor\u016F pro p\u0159\u00EDvod a odvod vzduchu z prostor se zv\u00FD\u0161enou hlu\u010Dnost\u00ED. V\u00FDvoj protihlukov\u00E9 \u017Ealuzie je c\u00EDlem \u0159e\u0161en\u00ED v\u00FDzkumn\u00E9ho z\u00E1m\u011Bru v oblasti Sni\u017Eov\u00E1n\u00ED hluku a vibrac\u00ED."@cs . "21220" . "Acoustic Louvre"@en . . . "Acoustic Louvre"@en . "Protihlukov\u00E1 \u017Ealuzie"@cs . . "V\u00FDvoj, v\u00FDroba a experiment\u00E1ln\u00ED ov\u011B\u0159en\u00ED protihlukov\u00E9 \u017Ealuzie s n\u00EDzk\u00FDmi tlakov\u00FDmi ztr\u00E1tami za sou\u010Dasn\u00E9ho udr\u017Een\u00ED dostate\u010Dn\u00E9ho \u00FAtlumu hluku v kritick\u00FDch okt\u00E1vov\u00FDch p\u00E1smech. Na z\u00E1klad\u011B p\u0159edchoz\u00EDho v\u00FDzkumu byly jako optim\u00E1ln\u00ED \u0159e\u0161en\u00ED navr\u017Eeny dv\u011B rozm\u011Brov\u00E9 varianty uspo\u0159\u00E1d\u00E1n\u00ED tlumi\u010De. Prvn\u00ED v\u00FDhodn\u00E9 proveden\u00ED, rozm\u011Br tlumi\u010De 1000 x 700 mm, d\u00E9lka 300 mm pom\u011Br tlou\u0161\u0165ky kulisy v\u016F\u010Di velikosti mezery mezi kulisami 5 : 4, druh\u00E9 v\u00FDhodn\u00E9 proveden\u00ED, rozm\u011Br tlumi\u010De 1200 x 700 mm, d\u00E9lka 300 mm pom\u011Br tlou\u0161\u0165ky kulisy v\u016F\u010Di velikosti mezery mezi kulisami 2 : 3. Sou\u010Dinitel m\u00EDstn\u00ED ztr\u00E1ty \u03B6 nep\u0159evy\u0161uje v obou p\u0159\u00EDpadech hodnotu 2,4. Provedenou spektr\u00E1ln\u00ED anal\u00FDzou bylo potvrzeno zv\u00FD\u0161en\u00ED \u010Dinitele kvality tlumi\u010De. Obecn\u00E9 uplatn\u011Bn\u00ED tohoto technick\u00E9ho \u0159e\u0161en\u00ED nalezne uplatn\u011Bn\u00ED zejm\u00E9na u aera\u010Dn\u00EDch v\u011Btrac\u00EDch otvor\u016F pro p\u0159\u00EDvod a odvod vzduchu z prostor se zv\u00FD\u0161enou hlu\u010Dnost\u00ED. V\u00FDvoj protihlukov\u00E9 \u017Ealuzie je c\u00EDlem \u0159e\u0161en\u00ED v\u00FDzkumn\u00E9ho z\u00E1m\u011Bru v oblasti Sni\u017Eov\u00E1n\u00ED hluku a vibrac\u00ED." . . "RIV/68407700:21220/08:02151395" . "Nov\u00FD, Richard" . . "390655" . . "\u00DA12116-FVZ-PH\u017D-2008" . . . "je ur\u010Den pouze pro nekomer\u010Dn\u00ED pou\u017Eit\u00ED" . . . . "Protihlukov\u00E1 \u017Ealuzie" .