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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a countercurrent continuous single-stage fluidized bed system using different perforated plate designs was studied and the results indicated that the plate design significantly affected the operation of the countercurrent staged fluidization bed.
3 citations
Patent•
14 Dec 2016
TL;DR: In this article, an in-pipe siphon circulating countercurrent heating waste heat steam boiler is proposed to support the heat transfer process of high-viscosity waste heat media like lubricating oil.
Abstract: The invention provides an in-pipe siphon circulating countercurrent heating waste heat steam boiler. The system integrates an in-pipe siphon circulating countercurrent heating rising film evaporator and a steam-steam ejector. Evaporation of rising films of the inner sides of heating pipe clusters distributed in a circular ring shape and arranged vertically and the optimum siphon circulation formed by descending channels of center cylinders are utilized for reinforcing heat transfer and preventing scaling. Meanwhile, mechanical cleaning of the inner sides of the pipe clusters can be facilitated. The outer sides of the heating pipe clusters distributed in the circular ring shape and arranged vertically are cleaned vertically so as to reinforce the heat transfer process of high-viscosity waste heat media like lubricating oil. Excess pressure of a steam pipe network is utilized for driving the steam-steam ejector to thermally compress water steam, and the efficient and simple waste heat steam boiler is obtained.
3 citations
Patent•
21 Jul 1994
TL;DR: By a corresponding configuration of the heat transfer surfaces, the restriction of the flow cross-sections is prevented at unchanged outer dimensions as discussed by the authors, where the inlet and outlet aperture of both media flows are at one side.
Abstract: By a corresponding configuration of the heat transfer surfaces the restriction of the flow cross-sections is prevented at unchanged outer dimensions The inlet and outlet aperture of both media flows are at one sideThere are the duct connecting unions (1), first medium inlet (2) and outlet (3) Second medium inlet (4) and outlet (5) in the heat exchanger proper (6)
3 citations
TL;DR: In this article, relations for determining a motive force in a complex model of mass transfer as applied to concurrent, countercurrent, and cross motion of the vapor and liquid phases have been introduced.
Abstract: Relations for determining a motive force in a complex model of mass transfer as applied to concurrent, countercurrent, and cross motion of the vapor and liquid phases have been introduced. These forces have been compared for different forms of organization of the flow, and their comparison with similar quantities from the known Murphree and Hausen models is presented.
3 citations
Journal Article•
TL;DR: Perturbations of the simulation model corresponding to some proposed mechanisms of saline-and mannitol-induced diuresis also result in a close correspondence between the model and experimental data, allowing further evaluation of these proposed mechanisms.
Abstract: A simulation model of nephron function was developed in which the loop of Henle acts as the countercurrent multiplier and an active time-limited sodium transport system along the ascending limb of the loop of Henle initiates the "single effect." The vasa recta acts passively as a countercurrent exchanger. Urea gradients are developed in the model through a passive time-dependent redistribution process which operates as a function of the regional osmotic redistribution of water. The steady-state antidiuretic operation of the model results in the development of renal interstitial osmotic profiles and in tubular filtrate-to-plasma ratios of inulin, electrolytes and urea that correspond closely with experimental data. Perturbations of the simulation model corresponding to some proposed mechanisms of saline-and mannitol-induced diuresis also result in a close correspondence between the model and experimental data, allowing further evaluation of these proposed mechanisms.
3 citations