开发具有高颗粒去除效率和低压降的创新型空气过滤器是非常值得的，因为高效过滤的能耗在建筑中可能非常大。纳米纤维过滤器可以潜在地应用于供暖、通风和空调（HVAC）系统的过滤装置，以降低风扇能耗。它们通常使用静电纺丝技术制造，由于气体滑移效应，静电纺丝技术可以在相对较低的空气阻力下达到较高的颗粒去除效率。本研究旨在系统地比较纳米纤维过滤器与传统暖通空调过滤器的空气阻力。为了在不同表面速度下进行公平比较，本研究首先考察了静电纺纳米纤维过滤器的压降和表面速度之间的关系。 从文献中收集了122个纳米纤维过滤器的实验数据。压降和表面速度之间的线性回归显示，89%的测试纳米纤维过滤器的R²值大于0.9。因此，可以确信压降与纳米纤维过滤器的表面速度成正比。然后，计算了纳米纤维过滤器的空气阻力系数（定义为面速度压降），并与商用HVAC过滤器进行了比较。比较表明，精心设计的纳米纤维过滤器的空气阻力可能低于具有类似颗粒去除效率的商用过滤器。 因此，开发纳米纤维过滤器技术以降低建筑高效过滤的能耗是值得的。此外，本研究将选定的纳米纤维过滤器用作窗纱，以减少打开窗户时室外颗粒物的进入。数值研究了纳米纤维窗纱的空气阻力对自然通风换气率的影响。在某些情况下，使用纳米纤维窗纱仍然可以确保充分的自然通风。引用:2018年年度会议，德克萨斯州休斯顿，会议论文

Developing innovative air filters with high particle removal efficiency and low pressure drop is highly worthwhile, as the energy consumption due to high-efficiency filtration can be significant in buildings. Nanofiber filters can be potentially applied in the filtration units of heating, ventilation, and air-conditioning (HVAC) systems to reduce the fan energy consumption. They are typically fabricated using the electrospinning technique, which can reach high particle removal efficiency with relatively low air resistance because of the gas slip effect. This study aims to systematically compare the air resistance of nanofiber filters with the conventional HVAC filters. To have a fair comparison under different face velocities, the investigation first examined the relationship between pressure drop and face velocity for electrospun nanofiber filters. Experimental data of 122 nanofiber filters were collected from the literature. The linear regressions between pressure drop and face velocity showed that 89% of the tested nanofiber filters had an R2value greater than 0.9. Therefore, the pressure drop can be confidently regarded as being proportional to the face velocity for nanofiber filters. Then, the air resistance coefficients of nanofiber filters, defined as the pressure drop over the face velocity, were calculated and compared with that of commercial HVAC filters. The comparison showed that the air resistances of nanofiber filters with careful design could be lower than that of the commercial filters with similar particle removal efficiency. Therefore, it is worthwhile to develop the technology of nanofiber filters in order to reduce the energy consumption associated with high-efficiency filtration in buildings. Furthermore, this study applied the selected nanofiber filters as window screens for reducing the entry of outdoor particles when opening the windows. The influence of the air resistance of nanofiber window screens on the natural ventilation air exchange rate was numerically investigated. Under certain scenarios, the use of nanofiber window screens can still ensure adequate natural ventilation.