Topic
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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1 citations
Journal Article•
TL;DR: In this paper, the root blower with countercurrent cooling was analyzed by the method of the theoretical analysis and the numerical analysis to study the effect of counter-current cooling technique on the performance of roots blower, it not only reduced discharge temperature and increased exhaust pressure but also avoided the backflow eddy at the discharge outlet and reduced power aerodynamic noise.
Abstract: The characteristic of roots blower with countercurrent cooling was analyzed by the method of the theoretical analysis and the numerical analysis to study the effect of countercurrent cooling technique on the performance of roots blower.Based on the dynamic mesh techniques,the numerical simulation on three-lobe arc type roots blower with countercurrent cooling was conducted with FLUENT software in order to investigate the inside flow field under the compressible and unsteady condition.The results showed that the countercurrent cooling technique played an important part in improvement of the performance of Roots blower,it not only reduced discharge temperature and increased exhaust pressure,but also avoided the backflow eddy at the discharge outlet and reduced power aerodynamic noise.The analysis results could provide a scientific basis for the method of reducing the noise and the optimum design of the casing structure.
1 citations
08 Apr 2013
TL;DR: In this paper, the number of stages becomes the exponent in the term which sets the ratio of concentration differences at the terminals in a multistage countercurrent system and imperfect mixing is accommodated.
Abstract: Mud washing variables are equated in a manner which simplifies the calculation of multistage countercurrent systems. Imperfect mixing is accommodated. In a simplified case, the number of stages becomes the exponent in the term which sets the ratio of concentration differences at the terminals.
1 citations
Patent•
09 Mar 2011
TL;DR: In this paper, a vertical countercurrent heat-pipe heat exchange device is proposed to solve the problem of significant difference of temperature gradient of indoor air in the height direction, forms air flows favorable for quick heat dissipation of equipment indoors, and simultaneously saves indoor space.
Abstract: The utility model disclose a vertical countercurrent heat-pipe heat exchange device, which comprises a heat-pipe heat exchanger, an indoor section, an intermediate section and an outdoor section, wherein the indoor section, the intermediate section and the outdoor section are arranged in sequence. An evaporation end of the heat-pipe heat exchanger is disposed at the indoor section, a condensation end of the heat-pipe heat exchanger is arranged at the outdoor section, a fan, an indoor air inlet and an indoor air outlet are arranged at the indoor section, another fan, an outdoor air inlet and an outdoor air outlet are arranged at the outdoor section, and the heat-pipe heat exchanger comprises at least three heat exchange pipes which are arranged according to the method that centers of end faces of the heat exchange pipes on the outer side are linked to form an outer center line which is an inclined line along the height direction. The vertical countercurrent heat-pipe heat exchange device is high in heat transfer efficiency, solves the problem of significant difference of temperature gradient of indoor air in the height direction, forms air flows favorable for quick heat dissipation of equipment indoors, and simultaneously saves indoor space. Moreover, the vertical countercurrent heat-pipe heat exchange device has the advantages of compact structure, high efficiency and low energy consumption.
1 citations