Results 221 to 230 of about 188,995 (261)

A new theory of precipitator efficiency

Atmospheric Environment (1967), 1971
Abstract This paper contains a new theory of precipitator efficiency, designed to avoid certain objections to the Deutsch formula. Its essential concept is that random motions of particles give rise to a directed flow if a concentration gradient exists. Furthermore, the flow tends to smooth out the distribution of particles.
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Effects of Coalescence Efficiencies on the Formation of Precipitation

Journal of the Atmospheric Sciences, 1985
Abstract A closed parcel model which simulates condensation, collection and breakup was used to evaluate the effects of recently measured collection efficiencies on precipitation development. Computations were made using theoretical collision efficiencies assuming coalescence efficiencies of 100% and, for comparison, with semiempirical coalescence ...
Harry T. Ochs, Kenneth V. Beard
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The changing relationship between precipitation efficiency and global precipitation

Precipitation efficiency (PE) is the relationship between cloud condensation and precipitation that links the atmospheric circulation to the hydrological cycle. Definition and thus, estimates vary greatly due to the underlying microphysical dependencies of PE.
Subhadip Sarkar, Jayanarayanan Kuttippurath, Vikas Kumar Patel   +2 more
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Coefficients of the efficiency of centrifugal precipitate washing

Theoretical Foundations of Chemical Engineering, 2014
The problem of the analytical determination of the ratio between volumes of filtrate upon its continuous and jet stream in homogenous isotropic incompressible sediment of the filtering centrifuge drum has been solved. Formulas for efficiency coefficients of the centrifugal precipitate washing have been obtained.
V. G. Zhukov, V. M. Chesnokov
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A unified efficiency theory for electrostatic precipitators

Atmospheric Environment (1967), 1984
Abstract Manufacturers have traditionally used either the Deutsch theory or a totally empirical formula for estimating the efficiency and required size of electrostatic precipitators. In the past decade, as operation was extended into new regimes (wide plate spacing, high resistivity, larger SCA's, etc.), they have found new phenomena not well ...
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Investigations of aerosol scavenging efficiency by precipitation

AIP Conference Proceedings, 2000
Results of field experiments of aerosol scavenging by precipitation are considered. Scavenging factor was evaluated for aerosol particles within the range greater 0.3 mkm. Experiments have clearly shown that one can calculate scavenging factor only thoroughly analyzing results of each measurement because there are lot of factors (aerosol concentration ...
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Affinity precipitation of proteins: design criteria for an efficient polymer

Journal of Molecular Recognition, 1998
Affinity precipitation is fast emerging as a successful technique for the purification of proteins which can be introduced at an early stage of downstream processing. The technique applies the use of reversibly soluble-insoluble polymers which have either natural or synthetic origin.
B, Mattiasson, A, Kumar, , Galaev IYu
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The World Distribution of Annual Precipitation Efficiency

Journal of Geography, 1971
Abstract Precipitation efficiency is the percentage of the total atmospheric water vapor above a station which is condensed and falls to earth as measurable precipitation on an average day. As such, it is an index of the effectiveness of dynamic precipitation mechanisms in a region and is a useful method of illustrating the degree of atmospheric ...
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Rapid precipitation of vanadium from solution using melamine as precipitant with high efficiency

Journal of Chemical Technology & Biotechnology
AbstractBACKGROUNDSelective catalytic reduction (SCR) can effectively remove NOx from flue gas in a coal‐fired power plant. As the core of SCR technology, the catalyst has a limited lifespan. The process of reducing acid leaching and roasting water leaching can efficiently extract vanadium and tungsten from spent SCR catalyst.
Bo Wang, Qiaowen Yang, Ting Li, Sifan Cui, Pengqiang Feng, Xuan Hou   +5 more
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The efficiency of precipitational fractionation

Die Makromolekulare Chemie, 1969
Kenji Kamide, Chozo Nakayama
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