管道消声器和风道末端单元检测

GB/T 17697-2014声学 风机和其它通风设备辐射入管道的声功率测定 管道法

概述本标准规定了一种测定连接管道的风机和其他通风设备进、出口端辐射入具有消声末端的管道内声功率的方法。本方法适用于空气温度为-50 ℃~+70 ℃和辐射稳态宽、窄带和离散频率噪声的风机。测试管道直径范围为0.15 m~2 m。附录H和附录I分别描述了直径d<0.15 m和d>2 m的测试管道内测定风机声功率的方法。本标准的测定方法对传声器头部位置气流大平均流速的限值取决于传声器防护罩的类型:--泡沫球风罩:15 m/s;--鼻锥:20 m/s;--采样管:40 m/s。若超过这些值,靠上述的传声器防护装置不足以抑制湍流压力脉动(见3.9)。声功率测试时,要按照GB/T 1236规定的方法测量气流参数。因此,测试管道通常在风机出口端装有“星形”整流栅以使涡流小(见5.2.9和7.3)。按照GB/T 1236 C型安装的大风机,可以省去整流栅,但只限于旋涡角不超过15°的条件(附录J举例说明了旋涡角的测定方法)。适用的声源类型本标准描述的测试方法适用于风机至少有一端与管道相连的声源,以及其他风机/消声器的组合或被称作“黑匣子”的风机组合体。本标准涉及的风机和其他设备包括:--连接管道的离心风机;--连接管道的轴流风机;--连接管道的混流风机;--连接管道的空气处理机;--连接管道的吸尘装置;--连接管道的空调装置;--连接管道的热风机。本标准也适用于辅助风机传送的气流平稳、且测试管道内声压与湍流压力脉动的信噪比不低于6 dB (见7.2.1)的其他气动声源,例如静压箱、风阀和节流装置。GB/T 25516规定

GB/T 21229-2007声学 风道末端装置、末端单元、风道闸门和阀噪声声功率级的混响室测定

本标准旨在建立按GB/T 14367规定进行声学测试通用准则，适用于ISO 3258所规定的空气配给与空气扩散系统所采用的风道末端装置、末端单元、风道闸门和阀噪声的声功率级测定

GB/T 25516-2010声学 管道消声器和风道末端单元的实验室测量方法 插入损失、气流噪声和全压损失

本标准规定了下列测试方法:有气流和无气流状态下，管道消声器的频带插入损失;消声器再生气流噪声的频带声功率级;有气流通过时，管道消声器的全压损失;风道末端单元的频带传声损失。本标准规定的是环境温度下实验室的测量方法。而消声器的现场测量方法在GB/T 19512中作了详细描述。需要说明的是，根据本标准得到的实验室测试结果没有必要与现场(安装)得到的测试结果相一致。不同的声场和流场都会导致不同的结果。例如，实验室测出的压力损失会比现场的低。不过，不同实验室的测试结果可以进行对照。本标准适用于包括通风和空调系统、燃气的进气和排气系统以及其他类似系统所有类型的消声器。另一些无源通风装置，如弯头、风道末端和T型连接管等也可根据本标准进行测试。本标准不适用于机动车的抗性消声器。

GB 50073-2013洁净厂房设计规范

1.0.1为了使洁净厂房设计符合节约能源、劳动卫生和环境保护的要求,做到技术先进、经济适用、安全可靠,确保洁净厂房设计质量,制定本规范。1.0.2本规范适用于新建、扩建和改建洁净厂房的设计。1.0.3洁净厂房设计应是施工安装、维护管理、检修测试和安全运行的基础。1.0.4洁净厂房设计除应符合本规范外,尚应符合现行有关标准的规定。

GB/T 51165-2016绿色饭店建筑评价标准

本标准适用于绿色饭店建筑的评价。

JJF 1648-2017管道消声器测试系统校准规范

本规范规定了管道消声器测试系统的校准条件及其主要计量特性的校准方法。本规范适用于包括通风和空调系统、燃气的进气和排气系统以及其他类似系统管道消声器性能测量的测试系统(称为管道消声器测试系统)的校准。

JGJ/T 141-2017通风管道技术规程

本规程适用于工业与民用建筑金属、非金属及复合材料通风管道(简称风管)的制作、安装与检验。

HJ 2034-2013环境噪声与振动控制工程技术导则

本标准规定了环境噪声与振动控制工程对设计、施工、验收和运行维护的通用技术要求。本标准适用于环境噪声与振动控制工程。对于有相应的工艺技术规范或污染源技术规范的工程,应同时执行本标准和相应的工艺技术规范或污染源技术规范。本标准可作为噪声与振动控制工程环境影响评价、设计、施工、竣工验收及运行与管理的技术依据。

DIN EN ISO 5136-2009声学,风机或其他空气移动装置辐射入管道中的声功率的测定.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声学.管道消音器和空气界面装置的实验室测量规程.插入损失、流动噪声和总压损失(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建筑物通风.住宅通风用部件/产品的性能测试.排气和供气终端设备

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.