Patterns and laws of dilution and outflow of gaseous products from slot chambers
- 14 Downloads
Ventilation of flat chambers occurs—simultaneously—through dilution of gaseous products, and their transport in a concentrated form, and is generally characterized objectively by the output parameter c=f(τ) in a “black box” description.
The efficacy of ventilation of flat chambers depends on the relationship between the primary outflow of impurity in a concentrated form and the subsequent dilution and outflow of residual impurities; it is decreased with decreasing degree of cross-sectional constraint of the jet.
A decrease of the cross-sectional constraint of the jet from 1 to 0.2 is accompanied by a regular transition of the curves describing the reduction of toxic impurity concentration as a function of time from a unimodal to bi- or trimodal pattern.
KeywordsResidual Impurity Hydraulic Model Electrode Sensor Regular Transition Rare Metal Deposit
Unable to display preview. Download preview PDF.
- 1.I. I. Medvedev, Ventilation of Potassium Mines [in Russian], Nedra, Moscow (1970).Google Scholar
- 2.G. A. Radchenko, Dust-Removing Ventilation of Underground Workings [in Russian], Nauka, Alma-Ata (1970).Google Scholar
- 3.I. G. Gurshev, Turbulent Jet in a Constrained Volume [in Russian], Kaz. SSR, Inst. of Mining, Alma-Ata (1974). (Deposited with VINITI, No. 84-75, Jan. 13, 1975).Google Scholar
- 4.Yu. N. Pervov, “Calculation of free turbulent jets propagating in constrained volumes”, in: Problems of Mine Aerology and Sudden Coal and Gas Bursts [in Russian], Izd. Akad. Nauk SSSR, Moscow (1958).Google Scholar
- 5.G. V. Kalabin, “Experimental studies of the opening of constrained turbulent flows”, Fiz. -Tekh. Probl. Razrab. Polezn. Iskop., No. 5, (1981).Google Scholar
- 6.G. V. Kalabin and V. S. Romanov, “Results of experimental studies of aerodynamics of flat chambers,” in: Ventilation of Mines [in Russian], Issue 6, Leningrad (1979).Google Scholar