Journal ArticleDOI
Experiments on a bubble absorber
TLDR
In this paper, experiments were carried out on a bubble absorber operating as part of a vapour absorption refrigeration system working with HCFC22-DMF to obtain heat and mass transfer and pressure drop data.About:
This article is published in International Communications in Heat and Mass Transfer.The article was published on 1999-10-01. It has received 27 citations till now. The article focuses on the topics: Pressure drop & Sherwood number.read more
Citations
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Journal ArticleDOI
Experimental investigation for heat and mass transfer characteristics of R124-DMAC bubble absorption in a vertical tubular absorber
Mengnan Jiang,Shiming Xu,Xi Wu +2 more
TL;DR: In this paper, the authors explored key parameters affecting heat and mass transfer characteristics of the bubble absorber and proposed new correlations for heat and transfer coefficients respectively for the R124-DMAC bubble absorption.
Journal ArticleDOI
Experimental Verification of a New Heat and Mass Transfer Enhancement Concept in a Microchannel Falling Film Absorber
Nitin Goel,D. Yogi Goswami +1 more
TL;DR: In this article, the authors presented an experimental study of using a screen mesh to enhance heat and mass transfer in a microchannel falling film absorber, which showed that the absorber heat load for the mesh-enhanced design is about 17% ± 3.4%-26% ±3.8% higher than a conventional microchannel design.
Journal ArticleDOI
Performance Evaluation of R134a/DMF-Based Vapor Absorption Refrigeration System
Suresh Mariappan,Mani Annamalai +1 more
TL;DR: In this article, an experimental investigation to measure performances of a vapor absorption refrigeration system employing tetrafluoro ethane (R134a)/dimethyl formamide (DMF) is described.
Journal ArticleDOI
Numerical simulation and experiment for R124-DMAC bubble absorption process in a vertical tubular absorber
Mengnan Jiang,Shiming Xu,Xi Wu +2 more
TL;DR: In this paper, a comparing investigation between the simulated model and experimental verifications for the R124 (2-chloro-l,l, l,l 2,2,-tetrafluoroethane)-DMAC (N′, N′- dimethylacetamide) bubble absorption process in a vertical tubular absorber was performed.
Journal ArticleDOI
Experimental investigation on heat and mass transfer in a vertical glass bubble absorber with R124-NMP pair
TL;DR: In this article, a sensitive study of the key operation parameters on overall heat and mass transfer coefficients and two-phase mass transfer coefficient has been performed under operating conditions of air-cooled absorption system.
References
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Journal ArticleDOI
Two-phase bubble flow
TL;DR: In this article, a theory is presented which shows that the velocity of the bubbles consists of a component equal to the superficial liquid velocity, a component equivalent to the gas velocity and a component due to buoyancy.
Journal ArticleDOI
Holdup and pressure drop with gas-liquid flow in a vertical pipe
G. A. Hughmark,B. S. Pressburg +1 more
TL;DR: In this paper, a statistical correlation for holdup was developed to include fluid physical properties, total mass velocity, and the air-liquid ratio entering the pipe, which showed an average percentage error of less than 15% between the observed and the calculated total pressure drop.
Book ChapterDOI
Properties of Cocurrent Gas-Liquid Flow
TL;DR: The problem of two-phase flow classification is complicated by the inevitable differences because of individual interpretations of visual observations and also by differences in terminology as mentioned in this paper, and a number of definite flow patterns are investigated.
Journal ArticleDOI
Heat and mass transfer in vertical tubular bubble absorbers for ammonia-water absorption refrigeration systems
TL;DR: In this article, a model is developed for calculation of simultaneous heat and mass transfer processes in vertical bubble absorbers as used for ammonia-water absorption refrigeration systems, and the mass transfer coefficients resulting from these experiments are correlated by a modified Sherwood relation.
Journal ArticleDOI
Analysis of a bubble absorber working with R22 and five organic absorbents
TL;DR: In this paper, a model of the absorption process in a vertical tubular bubble absorber working with R22-DMF, R 22-DMA, R22 -DMETEG and R 22 -NMP is developed using finite element method employing Galerkin's technique.