管道消聲器和風道末端單元檢測

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GB/T 17697-2014聲學 風機和其它通風設備輻射入管道的聲功率測定 管道法

概述本標準規定了一種測定連接管道的風機和其他通風設備進、出口端輻射入具有消聲末端的管道內聲功率的方法。本方法適用于空氣溫度為-50 ℃~+70 ℃和輻射穩態寬、窄帶和離散頻率噪聲的風機。測試管道直徑范圍為0.15 m~2 m。附錄H和附錄I分別描述了直徑d<0.15 m和d>2 m的測試管道內測定風機聲功率的方法。本標準的測定方法對傳聲器頭部位置氣流大平均流速的限值取決于傳聲器防護罩的類型:--泡沫球風罩:15 m/s;--鼻錐:20 m/s;--采樣管:40 m/s。若超過這些值,靠上述的傳聲器防護裝置不足以抑制湍流壓力脈動(見3.9)。聲功率測試時,要按照GB/T 1236規定的方法測量氣流參數。因此,測試管道通常在風機出口端裝有“星形”整流柵以使渦流小(見5.2.9和7.3)。按照GB/T 1236 C型安裝的大風機,可以省去整流柵,但只限于旋渦角不超過15°的條件(附錄J舉例說明了旋渦角的測定方法)。適用的聲源類型本標準描述的測試方法適用于風機至少有一端與管道相連的聲源,以及其他風機/消聲器的組合或被稱作“黑匣子”的風機組合體。本標準涉及的風機和其他設備包括:--連接管道的離心風機;--連接管道的軸流風機;--連接管道的混流風機;--連接管道的空氣處理機;--連接管道的吸塵裝置;--連接管道的空調裝置;--連接管道的熱風機。本標準也適用于輔助風機傳送的氣流平穩、且測試管道內聲壓與湍流壓力脈動的信噪比不低于6 dB (見7.2.1)的其他氣動聲源,例如靜壓箱、風閥和節流裝置。GB/T 25516規定

GB/T 21229-2007聲學 風道末端裝置、末端單元、風道閘門和閥噪聲聲功率級的混響室測定

本標準旨在建立按GB/T 14367規定進行聲學測試通用準則，適用于ISO 3258所規定的空氣配給與空氣擴散系統所采用的風道末端裝置、末端單元、風道閘門和閥噪聲的聲功率級測定

GB/T 25516-2010聲學 管道消聲器和風道末端單元的實驗室測量方法 插入損失、氣流噪聲和全壓損失

本標準規定了下列測試方法:有氣流和無氣流狀態下，管道消聲器的頻帶插入損失;消聲器再生氣流噪聲的頻帶聲功率級;有氣流通過時，管道消聲器的全壓損失;風道末端單元的頻帶傳聲損失。本標準規定的是環境溫度下實驗室的測量方法。而消聲器的現場測量方法在GB/T 19512中作了詳細描述。需要說明的是，根據本標準得到的實驗室測試結果沒有必要與現場(安裝)得到的測試結果相一致。不同的聲場和流場都會導致不同的結果。例如，實驗室測出的壓力損失會比現場的低。不過，不同實驗室的測試結果可以進行對照。本標準適用于包括通風和空調系統、燃氣的進氣和排氣系統以及其他類似系統所有類型的消聲器。另一些無源通風裝置，如彎頭、風道末端和T型連接管等也可根據本標準進行測試。本標準不適用于機動車的抗性消聲器。

GB 50073-2013潔凈廠房設計規范

1.0.1為了使潔凈廠房設計符合節約能源、勞動衛生和環境保護的要求,做到技術先進、經濟適用、安全可靠,確保潔凈廠房設計質量,制定本規范。1.0.2本規范適用于新建、擴建和改建潔凈廠房的設計。1.0.3潔凈廠房設計應是施工安裝、維護管理、檢修測試和安全運行的基礎。1.0.4潔凈廠房設計除應符合本規范外,尚應符合現行有關標準的規定。

GB/T 51165-2016綠色飯店建筑評價標準

本標準適用于綠色飯店建筑的評價。

JJF 1648-2017管道消聲器測試系統校準規范

本規范規定了管道消聲器測試系統的校準條件及其主要計量特性的校準方法。本規范適用于包括通風和空調系統、燃氣的進氣和排氣系統以及其他類似系統管道消聲器性能測量的測試系統(稱為管道消聲器測試系統)的校準。

JGJ/T 141-2017通風管道技術規程

本規程適用于工業與民用建筑金屬、非金屬及復合材料通風管道(簡稱風管)的制作、安裝與檢驗。

HJ 2034-2013環境噪聲與振動控制工程技術導則

本標準規定了環境噪聲與振動控制工程對設計、施工、驗收和運行維護的通用技術要求。本標準適用于環境噪聲與振動控制工程。對于有相應的工藝技術規范或污染源技術規范的工程,應同時執行本標準和相應的工藝技術規范或污染源技術規范。本標準可作為噪聲與振動控制工程環境影響評價、設計、施工、竣工驗收及運行與管理的技術依據。

DIN EN ISO 5136-2009聲學,風機或其他空氣移動裝置輻射入管道中的聲功率的測定.管道法(ISO 5136:2003),德文版本 EN ISO 5136:2009

1.1 GeneralThis International Standard specifies a method for testing ducted fans and other air-moving devices todetermine the sound power radiated into an anechoically terminated duct on the inlet and/or outlet side of theequipment.NOTE 1 For the sake of brevity, wherever the term \"fan\" occurs in the text, it means \"fan or other air-moving device\".The method is applicable to fans which emit steady, broad-band, narrow-band and discrete-frequency soundand to air temperatures between - 50 ℃ and + 70 ℃. The test duct diameter range is from 0,15 m to 2 m.Test methods for small (d < 0,15 m) and large (d > 2 m) test ducts are described in the informative Annexes Hand I, respectively.The maximum mean flow velocity at the microphone head for which the method is suitable depends on thetype of microphone shield used, and is as follows:-- foam ball 15 m/s;-- nose cone 20 m/s;-- sampling tube 40 m/s.Above these values the suppression of turbulent pressure fluctuations by the microphone shield (see 3.9) maybe insufficient.It is expected that sound power tests will be conducted in conjunction with airflow performance tests inaccordance with ISO 5801. The ducting arrangement will therefore normally incorporate a \"star\" type flowstraightener on the outlet side of the fan which will minimize swirl (see 7.3). Where it is permissible to deletethe straightener as, for example, with large fans to installation category C according to ISO 5801:1997, themethod is limited to a swirl angle of 15~. (An example of a method for determining the angle of swirl is given inAnnex J.)NOTE 2 The installation categories defined in ISO 5801 imply that the fan is either ducted on the outlet side only(category B), on the inlet side only (category C) or on both sides (category D).1.2 Types of sound sourceThe method described in this International Standard is applicable to a sound source in which a fan isconnected to ducts on at least one side. It is also applicable to other fan/attenuator combinations or equipmentincorporating fans which can be considered as \"black boxes\".Examples of fans and other equipment covered by this International Standard are-- ducted centrifugal fans,-- ducted axial flow fans, ducted mixed-flow fans, ducted air-handling units, ducted dust collection units, ducted air-conditioning units, and ducted furnaces.This International Standard is also applicable to other aerodynamic sources such as boxes, dampers andthrottle devices provided that a quiet air flow delivered by an auxiliary fan is available and the signal-to-noiseratio of sound pressures to turbulent pressure fluctuations in the test duct is at least 6 dB (see 7.2.1 ).An alternative method to determine the sound power level of the flow-generated noise of such aerodynamicsound sources, which does not require the measurement of sound pressure in a flow environment, isdescribed in ISO 7235. The method was originally devised for the determination of the flow noise level ofducted silencers. The sound power is determined in a reverberation room connected to the test duct via atransition element.In the case of ducted fans with closely coupled attenuators, the signal-to-noise ratio of sound pressures to turbulent pressures may be insufficient when using the in-duct method. Therefore the method described inISO 7235 is recommended for such fan/attenuator combinations.This International Standard is net applicable to non-ducted fans or equipment.

DIN EN ISO 7235-2010聲學.管道消音器和空氣界面裝置的實驗室測量規程.插入損失、流動噪聲和總壓損失(ISO 7235-2003).德文版本EN ISO 7235-2009

This standard specifies a measurement method for the determination of insertion loss, flow noise and pressure loss of ducted silencers. It applies to mainly dissipative silencers, but not to the reactive types used in automobiles.

BS EN 13141-2-2010建筑物通風.住宅通風用部件/產品的性能測試.排氣和供氣終端設備

This European Standard specifies laboratory methods for testing exhaust and supply air terminal devicesoperating under pressure differences.It applies to devices used in mechanical and natural residential ventilation systems, of the following types:- device with a manually adjustable opening; or- device with a fixed opening; or- pressure difference controlled device.It describes tests intended to characterize:- flow rate/pressure;- air diffusion characteristics (for supply air terminal devices);- noise production for components of systems;- insertion loss of component of systems;- sound insulation.