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Countercurrent exchange

About: Countercurrent exchange is a research topic. Over the lifetime, 2255 publications have been published within this topic receiving 28687 citations. The topic is also known as: Countercurrent exchange.


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Patent
Zaizhong Xia1, Wen Fang1, Yun Tang1
22 Apr 2015
TL;DR: In this paper, a heat dissipation apparatus including multiple heat exchange sheets is presented, where a first path and a second path are formed between the multiple Heat Exchange sheets, and the first path includes a first countercurrent channel, a guide channel, and a first-outlet cross-flow channel; the second path includes two countercurrent channels and two inlet channels.
Abstract: A heat dissipation apparatus including multiple heat exchange sheets. A first path and a second path are formed between the multiple heat exchange sheets, and the first path includes a first countercurrent channel, a guide channel, and a first-outlet cross-flow channel; the second path includes a second countercurrent channel and a second-inlet cross-flow channel. One part of a first fluid that enters the first path enters the first countercurrent channel and mainly performs countercurrent heat exchange with a second fluid that is in the second countercurrent channel, and the other part passes the guide channel and rapidly performs cross-flow heat exchange.
Journal ArticleDOI
TL;DR: In this paper, local mass transfer coefficients in a moving bed with countercurrent flow of liuqid are experimentally measured and correlated using previously published dimensionless equations in which Reynolds number is based on liquid slip velocity.
Patent
06 Sep 2018
TL;DR: In this paper, a rotary counter-current solid/fluid contact apparatus is provided to enhance the efficiency of adsorption, ion exchange, and regenerative heat exchange using a rotor to direct fluids to multiple stationary columns, or multiple sections of a stationary column.
Abstract: A rotary counter-current solid/fluid contact apparatus is provided to enhance the efficiency of adsorption, ion exchange and regenerative heat exchange. The counter-current apparatus uses a rotor to direct fluids to multiple stationary columns, or multiple sections of a stationary column. By the action of the rotor, counter-current flows of a fluid phase and a solid phase can be achieved for a combined adsorption and desorption cycle, or a combined heating and cooling cycle. The apparatus allows not only countercurrent solid-fluid flows based on columns in series, but also countercurrent solid-fluid flows in the length of each individual column. The apparatus does not require a turntable to rotate multiple columns.
Journal Article
TL;DR: In this article, an analytical expression for the minimum gas flowrate required for the design of an isothermal countercurrent gas stripper, when Henrys law (H > 1) applies and the gas and liquid streams are concentrated in the soluble gas of the binary gas mixture.
Abstract: It is presented an analytical expression for the minimum gas flowrate required for the design of an isothermal countercurrent gas stripper, when Henrys law (H > 1) applies and the gas and liquid streams are concentrated in the soluble gas of the binary gas mixture. This solution allows for a faster and more accurate result, for (GB)min, than the graphical procedure presently in use.
Patent
David W. Leyshon1, Robert A. Bader1
25 Mar 1988
TL;DR: In this paper, a thin bed reactor with axial flow of reaction heat from the reaction zone to the preheat zone is considered, where the feed being supplied to the reactor at a temperature of at least 100°C below reaction temperature and being heated to reaction temperature by conductive flow of heat generated by the reaction axially through the bed countercurrent to feed flow.
Abstract: Methane is converted to higher hydrocarbons by reaction with a gaseous oxidant under adiabatic conditions in a thin bed reactor, the feed being supplied to the reactor at a temperature of at least 100°C below reaction temperature and being heated to reaction temperature by conductive flow of heat generated by the reaction axially through the bed countercurrent to feed flow. A suitable reactor has a preheat zone and a reaction zone with axial flow of reaction heat from the reaction zone to the preheat zone.

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202358
2022115
202127
202041
201947
201849