Under the dual pressure of saving energy and keeping good indoor air quality, scientist all over the world, especially European scientist, start to survey the natural ventilation technique over again.
在节约能源、保持良好的室内空气品质双重压力下，全球科学家，特别是欧洲科学家，开始重新审视自然通风技术。
Requirement: Air inlet must start to open when down stream pressure is 1.0 PSI or above.
要求：当下游流体压力在1.0 PSI及以上时，空气进口必须开始打开。
Air compressor on start-up, internal have a small amount of stranded air pressure, start and deceleration requirement when inverter quick response, so, we choose LG inverter.
空压机在启动时，内部有少量的滞留气压，启动和加减速运行时要求变频器反应快速，因此，我们选用LG变频器。
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