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发表于 2025-3-18 10:17:57 | 显示全部楼层 |阅读模式
COVID-19. Opening doorways and home windows are good methods to maximise pure ventilation, which would make the risk of airborne contagion a lot decrease than with expensive and maintenance-requiring mechanical programs. In settings where respiratory isolation is tough and local weather permits, home windows and doorways needs to be opened to scale back the danger of airborne contagion. Old-fashioned clinical areas with high ceilings and enormous windows provide the greatest safety. Air conditioned buildings often have sealed home windows, because open home windows would work against the system supposed to keep up constant indoor air situations. ASHRAE defined Natural ventilation as the stream of air via open home windows, doorways, grilles, and different planned building envelope penetrations, and as being pushed by natural and/or artificially produced pressure differentials. An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. An necessary component of pure ventilation is air change fee or air modifications per hour: the hourly charge of ventilation divided by the quantity of the house. For example, six air adjustments per hour means an amount of new air, equal to the volume of the house, is added each ten minutes.
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