Wszystkie pola: reentrainment - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Recent development in heavy duty engine air filtration and the role of nanofiber filter media
Autorzy:: Jaroszczyk, T.
Petrik, S.
Donahue, K.
Powiązania:: https://bibliotekanauki.pl/articles/245716.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine air induction system
filtration process modelling
filtration mechanisms
filter development process
nanofiber filter media
air filter performance
filter efficiency
dust holding capacity
reentrainment
testing
Opis:: The development of an engine air filter is based on filter performance requirements, vehicle 's operational environment, available space, filter media properties, and production technology. The design process includes analyses of theoretical and empirical models describing filter media performance and aerosol flow in filter housings and through filter elements. Filter media are carefully selected based upon these models and simplified laboratory tests. The filter element design is evaluated in great detail through a series of laboratory and field experiments. The role of the engine air induction system has increased because of recent engine exhaust particulate and evaporative emission regulations. Engine lifetime, engine emission and fuel consumption depend on the air induction system design and its performance. Providing optimized solutions for these requirements dictates filter development trends. This drives the need for smaller, more compact filters and more efficient filter media with higher permeability. The efficiency can be drastically improved by applying a layer of nanofibers to a cellulose or synthetic substrate. The ISO fractional efficiency test method, that in its final stage of development, can clearly show the advantage of nanofiber filter media. This paper discusses air cleaner design including the newest in-line reduced volume air cleaners and the role of nanofiber filter media in engine air filtration.
Źródło:: Journal of KONES; 2009, 16, 4; 207-216
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of a biosurfactant on reentrainment and de-aggregation of powders
Wpływ biosurfaktantu na porywanie I deagregację cząstek proszku
Autorzy:: Sosnowski, T. R.
Gradoń, L.
Powiązania:: https://bibliotekanauki.pl/articles/2070723.pdf
Data publikacji:: 2009
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: proszek
inhalacja
inhalator
suszenie rozpyłowe
deagregacja
powder
inhalation
DPI
spray drying
deaggregation
Opis:: Resuspension of powders produced by spray-drying was investigated in order to assess their potential application for medical inhalations. Powders obtained from lactose and lactose/biosurfactant were analyzed under SEM and aerosolized in a commercial dry powder inhaler (DPI). It was demonstrated that the biosurfactant improves powder resuspension what can be explained by modification of shape, morphology and surface properties of particles prodviced by spray-drying. It was concluded that the addition of biosurfactants can be beneficial for the efficiency of drug delivery to lungs by inhalation.
W pracy badano aerozolizację proszków mających potencjalne zastosowaniu jako nośniki leków inhalacyjnych. Proszki wytwarzano metodą suszenia rozpyłowego z wodnych roztworów laktozy z domieszkami wybranego biosurfaktantu. Uzyskane cząstki analizowano z użyciem SEM oraz określono ich porywanie w inhalatorze DPI. Stwierdzono, że biosurfaktant, wpływając na kształt, morfologię i własności powierzchniowe cząstek, istotnie poprawia resuspensję proszku w inhalatorze, pozwalając uzyskać aerozol o cechach pożądanych w arozo-loterapii.
Źródło:: Inżynieria i Aparatura Chemiczna; 2009, 6; 176-177
0368-0827
Pojawia się w:: Inżynieria i Aparatura Chemiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Dynamics of particle loading in deep-bed filter. Trasport, deposition and reentrainment
Autorzy:: Przekop, R.
Gradoń, L.
Powiązania:: https://bibliotekanauki.pl/articles/184879.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: filtration
lattice Boltzmann
Brownian dynamics
multiphase flow
porous media
filtrowanie
metoda kratowa Boltzmanna
dynamika Browna
przepływ wielofazowy
ośrodek porowaty
Opis:: Deep bed filtration is an effective method of submicron and micron particle removal from the fluid stream. There is an extensive body of literature regarding particle deposition in filters, often using the classical continuum approach. However, the approach is not convenient for studying the influence of particle deposition on filter performance (filtration efficiency, pressure drop) when non-steady state boundary conditions have to be introduced. For the purposes of this work the lattice-Boltzmann model describes fluid dynamics, while the solid particle motion is modeled by the Brownian dynamics. For aggregates the effect of their structure on displacement is taken into account. The possibility of particles rebound from the surface of collector or reentrainment of deposits to fluid stream is calculated by energy balanced oscillatory model derived from adhesion theory. The results show the evolution of filtration efficiency and pressure drop of filters with different internal structure described by the size of pores. The size of resuspended aggregates and volume distribution of deposits in filter were also analyzed. The model enables prediction of dynamic filter behavior. It can be a very useful tool for designing filter structures which optimize maximum lifetime with the acceptable values of filtration efficiency and pressure drop.
Źródło:: Chemical and Process Engineering; 2016, 37, 3; 405-417
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Development of high dust capacity, high efficiency engine air filter with nanofibres
Autorzy:: Jaroszczyk, T.
Fallon, S. L.
Schwartz, S. W.
Powiązania:: https://bibliotekanauki.pl/articles/247590.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine air filter
multi-media filter design
nanofiber filter media
air filter performance
filter efficiency
dust holding capacity
reentrainment
testing
Opis:: Although dust-holding capacity is the primary feature of engine air filters operating in dusty environments, efficiency becomes a major factor when selecting an engine air filter. Inertial separators and high porosity or fibrous prefilters are commonly used to decrease the dust load to the main filter while high efficiency is achieved by utilizing submicron or nanofiber fibers in the main filter. The patented multi-stage filter was designed to achieve ultra-high particle removal efficiency and dust holding capacity, and long life in dusty and on highway environments. The main (final) filter is located downstream of the prefilter. The main filter is made ofpleatedfilter media containing nanofibers with a diameter in the range of40 - 800 nanometers. The upstream in-line precleaner utilizing flow-through mini cyclones has separation efficiency of 95%. A high dust capacity, high efficiency prefilter can be used instead of the precleaner. The prefilter is made of vertically lapped nonwoven filter media made from synthetic fibers of different materials to fully utilize the tribological effect. The volume of the prefilter is determined by the performance required and space allotted. This paper discusses the filter performance of high dust holding capacity engine air filters. Filter specifications, design and performance are discussed in detail. Performance characteristics of the media and full size filters were determined using on-line particle counters and the gravimetric test method. Initial and final efficiency, and dust loading performance characteristics, are provided.
Źródło:: Journal of KONES; 2008, 15, 3; 215-224
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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