净化室压差值的选择

　　The choice of decontamination chamber pressure difference value

　　The decontamination chamber pressure difference value should be selected properly, choice is too small, decontamination chamber pressure difference is easy damaged, cleanliness interference; Selection is too large, HVAC system, fresh air volume load increases, the filter shorten service life. Therefore, decontamination chamber pressure differential value size should be reasonable.

　　净化室压差是由送入新风量的大小来保持的,即:压差建立的基本原理是送风量大于回风量、排风量、漏风量之和,其中漏风量大小取决于建筑物维护结构的密封程度；

　　Decontamination chamber pressure difference is made into the size of the new air volume to maintain, i.e., the pressure difference is set up the basic principle of air output is greater than the return air and exhaust air volume, the sum of leakage air volume, the leakage air volume size depends on the structure of the building maintenance seal;

　　如门缝、窗缝、壁板拼缝、各种管线接口等缝隙,这些将影响到漏风量的大小,使室内压差很难维持或不稳定.无论是全新风空气系统,还是循环空气系统,通过净化室的送入风量与排风量和压差风量之间达到平衡便建立了压差.

　　Flat-fell seam, everywhere, such as the crack of the wall plate, all kinds of pipeline interfaces such as aperture, these will affect the size of the leakage air volume, make indoor differential pressure it is difficult to maintain or unstable. Whether the full fresh air system, or air circulation system, through decontamination chamber into the air and exhaust air volume and pressure difference between air volume balance differential pressure is established.