Characteristic analysis of adiabatic spray absorption process in aqueous lithium bromide solution

Su, Fengmin; Hong, Bin; Gao, Hongtao

doi:10.1016/j.icheatmasstransfer.2010.12.038

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Due to the large amount of heat rejected, this component is usually very big and costly compared to the other components of the system. Also, higher exergy destruction has been detected [ 94 , 95 , 96 , 97 ]. To increase the heat rejection and mass transfer between vapor and liquid, and to improve the absorber efficiency, diverse types of absorbers have been designed and proposed for the absorption cooling systems.…”

Section: Membrane-based Absorbersmentioning

confidence: 99%

Role of Membrane Technology in Absorption Heat Pumps: A Comprehensive Review

et al. 2020

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The role of heat pumps is linked to the actions of human life. Even though the existing technologies perform well in general, they have still some problems, such as cost, installation area, components size, number of components, noise, etc. To address these issues, membrane technologies have been introduced in both heat and cooling devices. The present work proposes and studied the review of the role of membrane technology in the heat pumps. The study focuses on the advancement and replacement of membrane in the place of absorption and compression heat pump components. The detailed analysis and improvements are focused on the absorber, desorber, and heat and mass exchanger. The parameters conditions and operation of membrane technologies are given in detail. In addition to this, the innovation in the heat pumps using the membrane technology is given in detail.

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Section: Membrane-based Absorbersmentioning

confidence: 99%

Role of Membrane Technology in Absorption Heat Pumps: A Comprehensive Review

et al. 2020

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“…This portion is not included in the calculation because of its small effect on the result; thereby it is neglected. The strong LiBr/water solution produced in the adiabatic absorber flows in two separate streams; one stream is pumped from the adiabatic absorber to the generator through the solution pump (path 9-10), while another stream is pumped from the adiabatic absorber to the strong solution sub-cooler through the circulation pump (path [11][12]. In the strong solution sub-cooler, the heat generated by the exothermic absorption process in the adiabatic absorber is rejected to the external sink ( .…”

Section: System Descriptionmentioning

confidence: 99%

“…Fengmin et al [12] developed an improved analytical Newman model considering the absorption heat effect. The model was used to study the absorption characteristics of the LiBr/water solution in an adiabatic spray absorber, in which the absorption fluid is dispersed into fine droplets with diameters ranging from 100 µm to 500 µm, resulting in immense absorption surface area of LiBr/water solution exposed to the vapor refrigerant.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of a Lithium-Bromide/Water Absorption Refrigeration System Equipped with an Adiabatic Absorber

Osta-Omar

Micallef

2016

Computation

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Abstract:The objective of this paper is to develop a mathematical model for thermodynamic analysis of an absorption refrigeration system equipped with an adiabatic absorber using a lithium-bromide/water (LiBr/water) pair as the working fluid. The working temperature of the generator, adiabatic absorber, condenser, evaporator, the cooling capacity of the system, and the ratio of the solution mass flow rate at the circulation pump to that at the solution pump are used as input data. The model evaluates the thermodynamic properties of all state points, the heat transfer in each component, the various mass flow rates, and the coefficient of performance (COP) of the cycle. The results are used to investigate the effect of key parameters on the overall performance of the system. For instance, increasing the generator temperatures and decreasing the adiabatic absorber temperatures can increase the COP of the cycle. The results of this mathematical model can be used for designing and sizing new LiBr/water absorption refrigeration systems equipped with an adiabatic absorber or for optimizing existing aforementioned systems.

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“…In a more recent paper, Su et al [24] presented an improved analytical Newman droplet model [25] that can consider the absorption heat effect. Using this model, the absorption characteristics of the adiabatic spray into aqueous lithium bromide solution was studied.…”

Section: Analytical Studiesmentioning

confidence: 99%