Advanced exergy analysis and risk estimation of novel NH3-H2O and H2O-LiBr integrated vapor absorption refrigeration system

2020 ◽  
Vol 224 ◽  
pp. 113348
Author(s):  
Vaibhav Jain ◽  
Ashu Singhal ◽  
Gulshan Sachdeva ◽  
S.S. Kachhwaha
Keyword(s):  
Exergy Analysis ◽  
Risk Estimation ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Vapor Absorption ◽  
Absorption Refrigeration System ◽  
Vapor Absorption Refrigeration

Estimation of Operating Parameters of a Water–LiBr Vapor Absorption Refrigeration System Through Inverse Analysis

2015 ◽  
Vol 138 (2) ◽  
Author(s):  
T. K. Gogoi
Keyword(s):  
Objective Function ◽  
Inverse Analysis ◽  
Exergy Efficiency ◽  
Operating Parameters ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Short Period ◽  
Vapor Absorption ◽  
Absorption Refrigeration System ◽  
Vapor Absorption Refrigeration

In this paper, an inverse problem is solved for estimating parameters of a steam-driven water–lithium bromide (LiBr) vapor absorption refrigeration system (VARS) using a differential evolution (DE)-based inverse approach. Initially, a forward model simulates the steady-state performance of the VARS at various operating temperatures and evaporator cooling loads (CLs). A DE-based inverse analysis is then performed to estimate the operating parameters taking VARS coefficient of performance (COP), CL, total irreversibility, and exergy efficiency as objective functions (one objective function at a time). DE-based inverse technique estimates the parameters within a very short period of elapsed time. Over 50 and 100 numbers of generations are sufficient for retrieval of COP and exergy efficiency, respectively, while it requires 150 generations for total irreversibility and CL. The study reveals that multiple combinations of parameters within a given range satisfy a particular objective function which serves as design guidelines in selecting appropriate operating parameters.

Optimization of a solar water heating system for vapor absorption refrigeration system

2020 ◽  
Author(s):  
Sathiya Satchi Christopher ◽  
Ravichandran Santosh ◽  
Muthuraman Ponrajan Vikram ◽  
Rajendran Prabakaran ◽  
Amrit Kumar Thakur ◽  
...  
Keyword(s):  
Heating System ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Vapor Absorption ◽  
Absorption Refrigeration System ◽  
Solar Water Heating System ◽  
Vapor Absorption Refrigeration
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