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“…The performance of the SNAFs exceeds the efficiency of the HEPA filters, and the SNAFs saturated with organic dyes exhibit hazardous, volatile, and environmentally friendly smoke sensing properties. Tongling and Chen [ 91 ] carried out a group of experiments on a nanofiber air filter by exposing it to PM2.5 in indoor environments to understand the evolution of liquid aerosol wetting on PM 2.5 removal efficiency and pressure drop while exposing the incense particles to the nanofiber filter medium and observing the nanoscale interactions between the incense molecules and the nanofiber network using SEM micro-photograph. Fig.…”
Section: Indoor Air Quality (Iaq)mentioning
confidence: 99%
“… Fig. 28 (a) Diagram of the electrospinning procedure, (b) Photographic of a nanofiber air filter media [ 91 ]. …”
The coronavirus has come to the world and spread with great wide among the countries of the world and has resulted in numerous infections that exceeded 110,518,566 million patients and are close to 2.5 deaths by September 2020. It also brought with it panic and fear, halted many activities, and led to the decline of the global economy. It changed human behavior and forced people to change their lifestyles to avoid infection. One of the most sectors that must be taken into consideration through pandemic coronavirus (COVID-19) around the globe is the air conditioning systems. The HVAC systems depend on the air as a heat transfer medium. The air contains a group of pollutants, viruses, and bacteria, and it affects and destroys human life. The air filter plays a major role as an important component in the air conditioning systems. Thus, it requires more effort by researchers to improve its design to prevent the ultra-size of particles loaded with coronavirus (COVID-19). This paper provides insight into the design of existing combined air-conditioners on their suitability and their impact on the spread of the hybrid coronavirus epidemic and review efforts to obtain a highly efficient air filter to get rid of super-sized particles for protection against epidemic infection. In addition, important guideline recommendations have been made to limit the spread of the COVID-19 virus and to obtain indoor air quality in air-conditioned places.
“…The performance of the SNAFs exceeds the efficiency of the HEPA filters, and the SNAFs saturated with organic dyes exhibit hazardous, volatile, and environmentally friendly smoke sensing properties. Tongling and Chen [ 91 ] carried out a group of experiments on a nanofiber air filter by exposing it to PM2.5 in indoor environments to understand the evolution of liquid aerosol wetting on PM 2.5 removal efficiency and pressure drop while exposing the incense particles to the nanofiber filter medium and observing the nanoscale interactions between the incense molecules and the nanofiber network using SEM micro-photograph. Fig.…”
Section: Indoor Air Quality (Iaq)mentioning
confidence: 99%
“… Fig. 28 (a) Diagram of the electrospinning procedure, (b) Photographic of a nanofiber air filter media [ 91 ]. …”
The coronavirus has come to the world and spread with great wide among the countries of the world and has resulted in numerous infections that exceeded 110,518,566 million patients and are close to 2.5 deaths by September 2020. It also brought with it panic and fear, halted many activities, and led to the decline of the global economy. It changed human behavior and forced people to change their lifestyles to avoid infection. One of the most sectors that must be taken into consideration through pandemic coronavirus (COVID-19) around the globe is the air conditioning systems. The HVAC systems depend on the air as a heat transfer medium. The air contains a group of pollutants, viruses, and bacteria, and it affects and destroys human life. The air filter plays a major role as an important component in the air conditioning systems. Thus, it requires more effort by researchers to improve its design to prevent the ultra-size of particles loaded with coronavirus (COVID-19). This paper provides insight into the design of existing combined air-conditioners on their suitability and their impact on the spread of the hybrid coronavirus epidemic and review efforts to obtain a highly efficient air filter to get rid of super-sized particles for protection against epidemic infection. In addition, important guideline recommendations have been made to limit the spread of the COVID-19 virus and to obtain indoor air quality in air-conditioned places.
“…l and q are influenced by the ambient environment. Thus the pressure loss is only decided by 3 parameters (G a ; T 0 ; P 0 ) while assuming that 1 K�A ¼ constant, as shown in equations ( 5) to (7):…”
Section: Filter Pressure Loss Modelmentioning
confidence: 99%
“…6 Previous research based on nanofiber filter showed that with the increase of loaded cake mass, when the pore size was small enough, the pressure drop would increase sharply due to the appreciable effect of the capturing mechanism of interception. 7 However, it should be noted that except for internal degradation status, external factors, like gas turbine load and environmental conditions, also have a great impact on pressure loss of filter. Firstly, the gas turbine load determines the filtration superficial velocity, which is the key influence factor of filter pressure loss and filter efficiency.…”
Due to the complex and harsh environmental factors, the useful life of the filter in the gas turbine air intake system is usually less than its design life. When the filter is seriously degraded, the power and thermal efficiency of the gas turbine will decrease obviously due to the increase of inlet pressure loss. For evaluating the health condition of filters in the air intake system, this work forms a filter pressure loss model with the defined health index for the filter and five external environmental and control factors. By integrating the gas path component model, the combined model is applied in a real data set and the results show that (i) the proposed health index is efficient in representing the degradation state of the filter, (ii) the influencing factors on the pressure loss are successfully decoupled and their contributions on the pressure are quantitatively estimated, and (iii) the integrated model of filter pressure loss and gas path component can be used to better estimate the deterioration states of the filter as well as the gas turbine performance.
“…This is also reported elsewhere using wetting liquid aerosols. 10 Differences of pressure across the filter called pressure drop (ΔP), normalized by the filter area (4.9 cm 2 ), upon specific conditions of airflow (11,23,34,45,57,68,85,113, and 170 cm/s) are reported in Figure 5. ΔP and the airflow were measured on six samples.…”
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