The tests have been conducted to analyse the working principle of temperature keeping air exchanger and test synthetically the volume of wind, pressure of wind and air heat exchanger efficiency.

本文对双向恒温换气机的工作原理进行了分析研究，并对其风量、风压及热效率等特性进行了综合测试。

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And it has small volume, light weight, easy installation, stable efficiency, the advantages of uniform wind speed, the clean workshop need large quantities of filter with no partition structure.

加之其具有体积小、重量轻、便于安装、效率稳定、风速均匀的优点，目前洁净厂房所需的大批量的过滤器多采用无隔板结构。

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The study shows that the separation size is related to the rotary velocity of the turbo, the wind volume and the wind pressure of the exhaust fan, the structure and parameters of the turbo.

研究表明：分级粒径的大小与涡轮转速、抽风机风量、风压及涡轮结构参数有关。

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