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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TL;DR: In this article, two different heat-integrated reactor concepts for the exhaust aftertreatment of natural gas powered vehicles are presented, one based on previously published fully integrated systems, and the second based on an efficient metallic countercurrent heat exchanger with a separate catalytically coated ceramic honeycomb.
Abstract: In this paper, two different heat-integrated reactor concepts for the exhaust aftertreatment of natural gas powered vehicles are presented. While one concept is based on previously published fully integrated systems, in the second one, an efficient metallic countercurrent heat exchanger is closely combined with a separate, catalytically coated ceramic honeycomb. For rapid cold start and for backpressure-reduced operation under high load conditions, both devices are equipped with an electric heater and a bypass system. The characteristic differences between both approaches will be demonstrated by drive cycle simulations.
8 citations
TL;DR: In this article, a general singular point equation is derived for the top and bottom products of separative reactors at countercurrent operation, which can be applied to phase equilibrium controlled processes as well as to mass transfer-controlled processes.
8 citations
TL;DR: In this article, a semi-analytical model was developed to study the rewetting/quenching rate of a hot vertical tube by a falling liquid film in terms of initial tube temperature, flow rate of rising vapors, tube thickness and cooling water injection and penetration rates.
8 citations
Journal Article•
TL;DR: This work brings to the fore characterizations and dynamical properties of countercurrent liquid-liquid double-pipe heat exchangers, which are compartmental and cooperative irreducible, and each of these characterizations define particular dynamical Properties of the system solutions.
Abstract: Countercurrent liquid-liquid double-pipe heat exchangers prove to be a special type of positive systems: namely, they are compartmental and cooperative irreducible. Each of these characterizations define particular dynamical properties of the system solutions. This work brings to the fore such characterizations and dynamical properties.
8 citations
TL;DR: In this paper , a molecular diffusion dynamics model was developed to predict the pretreatment conditions (R2 = 0.9785), and the main amino acid sequences were identified, i.e., FEGGSIE, KDFPEAHSQAT, and GSQPAEGAK.
8 citations