Low Capacity Diffusion Absorption Refrigeration: Experimental Investigations and Thermal Characterization

2021 ◽  
pp. 1505-1516
Author(s):  
Ikram Saâfi ◽  
Ahmed Taieb ◽  
Ahmed Bellagi
Keyword(s):  
Thermal Characterization ◽  
Experimental Investigations ◽  
Absorption Refrigeration ◽  
Diffusion Absorption

A Parametric Examination of the Factors Affecting the Performance of a Diffusion Absorption Refrigeration System

2021 ◽  
pp. 1-38
Author(s):  
Noman Yousuf ◽  
Timothy Anderson ◽  
Roy Nates
Keyword(s):  
Waste Heat ◽  
Operating Conditions ◽  
Design Parameters ◽  
Working Fluid ◽  
Low Grade ◽  
Absorption Refrigeration ◽  
Factors Affecting ◽  
Thermally Driven ◽  
Mass Flowrate ◽  
Diffusion Absorption

Abstract Despite being identified nearly a century ago, the diffusion absorption refrigeration (DAR) cycle has received relatively little attention. One of the strongest attractions of the DAR cycle lies in the fact that it is thermally driven and does not require high value work. This makes it a prime candidate for harnessing low grade heat from solar collectors, or the waste heat from stationary generators, to produce cooling. However, to realize the benefits of the DAR cycle, there is a need to develop an improved understanding of how design parameters influence its performance. In this vein, this work developed a new parametric model that can be used to examine the performance of the DAR cycle for a range of operating conditions. The results showed that the cycle's performance was particularly sensitive to several factors: the rate of heat added and the temperature of the generator, the effectiveness of the gas and solution heat exchangers, the mass flowrate of the refrigerant and the type of the working fluid. It was shown that can deliver good performance at low generator temperatures if the refrigerant mass fraction in the strong solution is made as high as possible. Moreover, it was shown that a H2O-LiBr working pair could be useful for achieving cooling at low generator temperatures.

scholarly journals Dynamic investigation of the diffusion absorption refrigeration system NH 3 -H 2 O-H 2

2017 ◽  
Vol 10 ◽  
pp. 468-474 ◽  
Author(s):  
Mohamed Izzedine Serge Adjibade ◽  
Ababacar Thiam ◽  
Christophe Awanto ◽  
Baye A. Ndiogou ◽  
Vincent Sambou
Keyword(s):  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System ◽  
Dynamic Investigation ◽  
Diffusion Absorption
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