Ceramic fiber ntau daim pam muaj lub suab nrov zoo rau cov suab nrov hauv lub suab.
Lub ntsiab yam tseem ceeb cuam tshuam rau lub suab nqus kev ua tau zoo ntawm ceramic fiber pam yog tuab, ntom thiab airflow kuj. Qhov ceev yog qhov hnyav ntawm cov khoom ib lub cubic meter. Huab cua txaus tsis kam yog qhov piv ntawm huab cua siab rau huab cua ntws tus nqi hla ib chav tsev tuab ntawm cov khoom. Airflow kuj yog qhov tseem ceeb tshaj plaws uas cuam tshuam rau lub suab nqus kev ua haujlwm ntawm cov pam vov ceramic. Yog hais tias qhov kev khiav hauj lwm tsawg dhau, nws txhais tau hais tias cov khoom tsis sib xws, cov huab cua kev co yooj yim dhau mus, thiab lub suab nqus kev ua haujlwm raug txo; Yog tias cov kev ntws tsis kam yog qhov loj heev, nws txhais tau tias cov khoom siv ceev, cov cua kev co yog qhov nyuaj los qhia, thiab kev nqus cov suab ua tau zoo kuj tseem raug txo. Rau centrifugal iav ntaub plaub, lub suab nqus cov khoom muaj qhov zoo tshaj plaws ntws tsis kam.
Nyob rau hauv kev tsim engineering, airflow kuj tsis yooj yim rau kev ntsuas, tab sis nws tuaj yeem kwv yees kwv yees thiab tswj tau los ntawm cov tuab thiab qhov ntom ntom.
Raws li lub thickness nce, lub suab nqus coefficient nce siab nyob rau hauv nruab nrab- thiab qis-zaus cheeb tsam, tab sis tsis hloov ntau nyob rau hauv high-frequency cheeb tsam (high-frequency absorption yog ib txwm loj).
When the thickness is unchanged, the bulk density increases, and the sound absorption coefficient of the medium and low frequency also increases; but when the bulk density increases to a certain extent, the material becomes dense, the flow resistance is greater than the optimal flow resistance, and the sound absorption coefficient decreases. For a ceramic fiber blanket with a bulk density of more than 5cm and a bulk density of 16kg/m3, the low frequency 125Hz is about 0.2, and the sound absorption coefficient of the medium and high frequency (>500Hz) nyob ze rau ib qho.
Thaum lub thickness tseem nce los ntawm 5cm, lub suab nqus coefficient ntawm tsawg zaus maj mam nce. Thaum lub thickness ntau tshaj 1m, lub suab nqus coefficient ntawm tsawg zaus 125Hz kuj yuav ze rau 1.
Thaum lub thickness tseem tsis hloov thiab cov ntom ntom ntom nce, cov suab tsawg zaus nqus tau nqus coefficient ntawm cov kab ceramic fam yuav txuas ntxiv ntxiv. Thaum cov tuab ntom ntom ntom ntom nti
Thaum cov khoom ntim ntau tshaj 120kg / m3, lub suab nqus kev ua haujlwm poob qis, vim tias cov khoom siv los ua denser, thiab lub suab nqus kev ua tau zoo ntawm nruab nrab thiab siab zaus cuam tshuam zoo heev. Thaum cov khoom ntim ntau tshaj 300kg / m3, lub suab nqus kev ua haujlwm tau txo qis heev.
Lub thickness ntawm lub suab-absorbing ceramic fiber pam feem ntau siv nyob rau hauv architectural acoustics yog 2.5cm, 5cm, thiab 10cm, thiab cov density yog 16, 24, 32, 48, 80, 96, thiab 112kg / m3. Feem ntau 5 cm tuab, 12-48 kg/m3 ceramic fiber pam yog siv.
Lub suab nqus kev ua tau zoo ntawm daim pam fiber ntau ceramic kuj tseem cuam tshuam nrog rau kev teeb tsa. Thaum muaj huab cua txheej tom qab daim pam fiber ntau ceramic, lub suab nqus cov nyhuv ntawm ceramic fiber pam nrog tib tuab thiab tsis muaj cua txheej zoo sib xws.
Hauv particular, lub suab nqus kev ua tau zoo ntawm qhov nruab nrab thiab qis zaus yog siab dua li cov ntaub ntawv hauv qab tawv, thiab lub suab nqus coefficient yuav nce ntxiv nrog qhov nce ntawm cov thickness ntawm huab cua txheej, tab sis cov nyhuv tsis yog nce mus rau ib qho. tus nqi.
