THEORETICAL STUDY OF PRESSURE DIFFERENCE IN THE FILTER RESPIRATORS

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Parent Category: Geo-Technical Mechanics, 2013

Category: Geo-Technical Mechanics, 2013, Issue 111

UDC 614.89 

Cheberyachko S.I., Ph.D. (Tech.) (SHEI «NMU»)

Abstract. Pressure difference in the dust mask was studied at periodic motion of air. The key Navier-Stokes equations of motion with neglected inertial force were used in order to study process of gas laminar filtration through the respirator. The study was based on the solution proposed by G. Lamb.

Resistance of parallel fiber system was determined at air flow unevenly streamed around the fibers when the air flow was changed according to the harmonic law. Equations were defined for the air passing through the respirator filter at breathing. Changing of pressure differences were theoretically studied depending on breathing duration. Parameters were received which could help to estimate dependence between pressure difference in the respirator and breathing duration. It was found that with increased phase of breathing distribution of pressure in the filter was uneven.

Keywords: dust mask, differential pressure, breathing resistance, dust, particulate composition of the dust.

References:

1. Grachev, V.A. and  Sobyur, S.V. (2006), Sredstva individualnoy zashchity organov dykhaniya [Personal Respiratory protective equipment], Pozhkniga, Moscow, Russia.

2. Kaminsky, S.L. (2007), Osnovy ratsionalnoy zashchity organov dykhania na proizvodstve [Bases rational respiratory protection at work],  Prospect of Science, St. Petersburg, Russia.

3. Basmanov, P.I.,  Kaminsky, S.L., Korobeujnikov, A.V. and Trubitsyna M.E. (2002), Sredstva individualnoy zashchity organov dykhaniya [Personal respiratory protection], HIPD "Art of Russia", St. Petersburg, Russia.

4. Uzhov, V.N. and  Myagkov, B.I. (1970), Ochistka promyshlennykh gazov filtrami [Treatment of industrial gas of filters], Chemistry, Moscow, Russia.

5. Sheydegger, A.E. (1960), Fizika techeniya zhidkostey cherez poristye sredy [Physics of fluid flow through porous media],GNTINL, Moscow, Russia.

About the authors:

Cheberyachko Sergey Ivanovich, Candidate of Technikal Science (Ph.D), Associate Professor of department Aerology and Protection of Labour, State Higher Education Institution «National Mining University» (SHEI “NMU”), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

 

 

 

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