净化铝材配件-空气过滤器的主要性能指标
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- 发布日期：2017-04-13 16:47:24
空气净化设备的主要指标有净化效率、额定风量、阻力等。下面净化铝材配件 http://www.jnjkjh.com/ 小编以空气过滤器为例加以说明。
The main indicators of air purification equipment are purification efficiency, rated air flow, resistance, etc.. The following purification of aluminum parts in small series to air filter for example to illustrate.
（1）过滤效率
(1) filtration efficiency
过滤效率定义为过滤器捕集的颗粒物质量（或数量）与过滤器上游空气中的颗粒物质量（或数量）之比值。对于有粒径分布范围的实际颗粒物，有全效率和分级效率之分。
Filtration efficiency is defined as the ratio of the particle mass (or number) to the particle mass (or number) in the upstream air filter. For the actual particles with particle size distribution, there are full efficiency and classification efficiency.
1）全效率。全效率是指过滤器捕集的颗粒物总量与过滤器上游空气中的颗粒物总量之比值。
1) total efficiency. The total efficiency is the ratio of the total amount of particulate matter in the upper air to the filter trap.
2）分级效率。分级效率是指过滤器对某一粒径范围颗粒物的捕集效率。同一过滤器对不同粒径的颗粒物的捕集效率是不同的，颗粒物粒径越大，分级效率越高。由于需要净化的颗粒物粒径分布不同，所以在选用过滤器时要特别关注所处理粒径范围的效率值。如果知道被处理颗粒物的粒径分布，过滤器的全效率与分级效率是可以换算的。
2) classification efficiency. The classification efficiency is a filter for a particle size range of particle capture efficiency. The capture efficiency of different particle size of the same filter is different, the particle size is bigger and the classification efficiency is higher. Due to the need to purify the particle size distribution is different, so in the selection of filter should pay special attention to the efficiency of the particle size range. If the particle size distribution is known, the full efficiency and classification efficiency of the filter can be converted.
3）串联总效率。在空调系统中经常采用过滤器串联的形式，串联过滤器的总效率用特定公式可以计算出。
3) series total efficiency. In the air conditioning system, the filter is often used in series, the total efficiency of the series filter can be calculated by the formula.
（2）额定风量
(2) rated air volume
额定风量是过滤产品出厂时规定的单位时间内处理的风量，以立方米/小时为单位。工程应用中它可以通过过滤器迎面风速与过滤器迎风面积之乘积求得，实际处理风量应不大于额定风量。
Rated air quantity is the amount of air flow that is handled in the unit time specified in the factory of the product. In engineering application, it can be obtained by the product of the wind speed and the wind speed of the filter, and the actual process air volume should be less than the rated wind speed.
（3）阻力
(3) resistance
空气流过空气过滤器的全压损失称为空气过滤器的阻力。额定风量下空气通过未积尘过滤器的阻力称为初阻力，在额定风量下因过滤器积尘而阻力上升达到的规定值称为终阻力。对于初效、中效、高中效和亚高效过滤器一般规定终阻力不大于初阻力的两倍，或由生产厂商提供数据。对高效过滤器仅有阻力概念，不区分初阻力终阻力。
The total pressure loss of the air passing through the air filter is called the resistance of the air filter. The air passing through the non product dust filter is called initial resistance, which is referred to as the final resistance of the specified value in the rated air pressure due to the dust of the filter. For the first effect, the middle - and high - efficiency, high - efficiency and high - efficiency filters generally provide that the final resistance is not more than two times the initial resistance, or by the manufacturer to provide data. The concept of only resistance to the high efficiency filter is not distinguished from the initial resistance.
