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首页> 外文期刊>Science and Technology for the Built Environment >An acoustic performance analysis of AC-motor bathroom ventilation fans for a decade-long period, 2005-2015
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An acoustic performance analysis of AC-motor bathroom ventilation fans for a decade-long period, 2005-2015

机译：交流电机卫生间通风风扇的声学性能分析，2005-2015

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摘要

The most common HVAC device in a residence, or in most other buildings for that matter, is the bathroom ventilation fan. Because these devices operate in close proximity to humans, the concept of loudness is particularly relevant to the acoustic performance of fans. In this regard, acoustic performance is an important component of indoor environmental quality, and the use of loudness as a method of achieving an acoustic rating is now widely accepted in codes and standards. Therefore, a long-term comparative study investigating changes in acoustic performances was performed for bathroom ventilation fans of the alternating current (AC) motor type, with a focus on fan loudness over an 11-year period from 2005 to 2015. Because of difference in performances and designs along with divisions created by testing standards and codes, the 1400 fans tested and analyzed were divided into low- and high-volume flow rate groups, namely below and above 42.5 L/s. In addition to specific conclusions reached from analyzing 11years of fan performance measurements, major overall conclusions are that (1) the fan noise in terms of loudness has decreased, even to the point of being lower than typical human conversations in many cases, and (2) fan loudness has a weak relationship with volume flow rate and a more noticeable linear relationship with fan rotating speed. This study proves that acoustic performance improvements in bathroom ventilation fans have advanced acoustic-indoor environmental quality over the decade-long period of this study.
机译：居住地区最常见的HVAC设备，或在大多数其他建筑物中，是卫生间通风风扇。由于这些设备在靠近人的邻近操作，所以响度的概念与风扇的声学性能特别相关。在这方面，声学性能是室内环境质量的重要组成部分，并且在代码和标准中，现在广泛接受了响度作为实现声学评级的方法。因此，对交流（AC）电机类型的浴室通风风扇进行了一种调查声学性能变化的长期对比研究，重点是在2005年至2015年的11年期间的风扇响声。由于差异性能和设计以及通过测试标准和代码产生的部门，测试和分析的1400名风扇被分为低体积和大量流速组，即低于42.5 L / s。除了从分析到11年的风扇性能测量方面达到的具体结论外，总体上述结论是（1）响度方面的风扇噪声降低，甚至在许多情况下低于典型的人类谈话，（2 ）风扇响度与体积流量较弱，与风扇转速更明显的线性关系。本研究证明，浴室通风风扇的声学性能改进在本研究的十年内具有先进的声学室内环境质量。

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