文章基本信息

标题：Experimental investigation on the design of a low-noise and weak-infrared power generation cabin
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作者：Fan Yang ; Wei Yang ; Luo Zhang 等
期刊名称：Case Studies in Thermal Engineering
印刷版ISSN：2214-157X
电子版ISSN：2214-157X
出版年度：2021
卷号：25
页码：100991
DOI：10.1016/j.csite.2021.100991
出版社：Elsevier B.V.
摘要：For power generation cabin, it's experimentally found that near-field noise of inlet side is the most prominent while that of lateral and outlet sides are also strong, and that infrared signature of outlet side is the most prominent while that of lateral side is also strong. To achieve low-noise and weak-infrared signatures simultaneously, the radiator is modified as an external one and a low-noise fan is configured, and an airduct is designed for radiator module. To suppress aerodynamic noise, an impedance muffler is adopted. To enhance noise and thermal insulation performance, a multi-layer structure with “steel sheet damping blanket insulation cotton” is designed as cabin wall. The experimental results show that with the new design, average near-field noise of inlet, lateral and outlet sides decrease from 87.5 dB(A) to 77.5 dB(A), from 84.1 dB(A) to 76.0 dB(A) and from 84.8 dB(A) to 79.5 dB(A), respectively. The highest near-field noise of airduct only locate at its outlet, with value of 77.3 dB(A). Also, the maximal temperature differences of lateral and outlet sides with ambient air drop from 34 °C to 12 °C and from 42 °C to 8 °C, respectively. The corresponding value for airduct drop to 10 °C.
关键词：Power generation cabin ; Radiator module ; Noise suppression ; Infrared suppression ; Wind screen