scholarly journals Thermodynamic Analysis of the Performance of a Single-Effect Absorption Refrigeration System Using the Ammonia/Sodium Thiocyanate Couple

2020 ◽  
Vol 09 (01) ◽  
pp. 53-63
Author(s):  
Roméo Gilbert Ngock ◽  
Jean Gaston Tamba ◽  
Salomé Ndjakomo ◽  
Francis Djanna ◽  
Max Ndame
Keyword(s):  
Thermodynamic Analysis ◽  
Sodium Thiocyanate ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Single Effect ◽  
Absorption Refrigeration System

Thermodynamic performance analysis of a single-effect absorption refrigeration system operating with water and 1-ethyl-3-methylimidazolium-based ionic liquids mixtures

2021 ◽  
pp. 117761
Author(s):  
Hugo Valença de Araújo ◽  
Luiz Henrique Parolin Massuchetto ◽  
Raiza Barcelos Corrêa do Nascimento ◽  
Stella Maia Rocha de Carvalho ◽  
José Vicente Hallak Dangelo
Keyword(s):  
Ionic Liquids ◽  
Performance Analysis ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Thermodynamic Performance ◽  
Single Effect ◽  
Absorption Refrigeration System ◽  
System Operating

Finite Time Thermodynamic Analysis of a Real Vapour Absorption Refrigeration System with and without Heat Leak

2018 ◽  
Vol 6 (8) ◽  
pp. 217
Author(s):  
Sanjay Khatwani ◽  
Govind Maheshwari
Keyword(s):  
Thermodynamic Analysis ◽  
Finite Time ◽  
Heat Engine ◽  
Coefficient Of Performance ◽  
Absorption Refrigeration ◽  
Heat Leak ◽  
Refrigeration System ◽  
Absorption Refrigeration System ◽  
Internal Irreversibility ◽  
Source Sink

This article presents finite time thermodynamic analysis of a real vapour absorption refrigeration system taking into account both external as well as internal irreversibility. The complete VAR model is assumed to be consisting of two sub-systems. One sub-system (generator-absorber assembly) is assumed as an irreversible heat engine cycle whereas another sub-system (evaporator-condenser assembly) is assumed as an irreversible refrigeration cycle. This study analyzes the effect of presence of heat leak on performance of irreversible (real) vapour absorption refrigeration (VAR) system. This is achieved by adding a heat leakage term into an irreversible model of VAR system. Overall coefficient of performance (COP) of the VAR system is optimized with respect to source/sink side heat exchanger areas using Langrangian multiplier method. Furthermore, the effects of the variations in the cycle parameters on performance deviation of the VAR system are compared with and without heat leak. Results show that effect of rate of heat leak is significant along with the other irreversibilities variations on performance deviation of the VAR system.

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