Theoretical study on the effect of operating conditions on performance of absorption refrigeration system

2007 ◽  
Vol 48 (2) ◽  
pp. 599-607 ◽  
Author(s):  
Omer Kaynakli ◽  
Muhsin Kilic
Keyword(s):  
Theoretical Study ◽  
Operating Conditions ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

scholarly journals Design and Fabrication of Solar Powered Vapour Absorption Refrigeration System

2020 ◽  
Vol 170 ◽  
pp. 02011
Author(s):  
Varun Yadav ◽  
Supradeepa Panual G ◽  
Neeraj Yadav ◽  
Ratnam Bordia ◽  
Rohini Soni ◽  
...  
Keyword(s):  
Solar Energy ◽  
Cooling System ◽  
Energy Performance ◽  
Operating Conditions ◽  
Air Conditioner ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Evaporator Temperature ◽  
Absorption Refrigeration System ◽  
Solar Powered

Engineering is all about the application of knowledge and ideas for continuous development in society. In today’s world, there is a strong need for an environment-friendly refrigerating system, therefore, our focus is on a solar powered vapour absorption refrigeration system. This project focuses on a cooling system that minimizes the dependency over electricity and to show our ability to save our resources for future generations. The objective of this work was to design and fabricate a vapour absorption refrigeration system, using LiBr-H20, as the refrigerants and powered by solar energy. Performance Evaluation of the system has been done on the basis of different operating conditions and parameters like, solar irradiance, collector, generator, condenser and evaporator temperature. The COP of the system was obtained as 0.1 and the capacity was 0.01 TR. Since it’s an ab-initio development it will be a unique one in terms of understanding and underlying engineering. The system is an eccentric one that can be operated by multiple heat sources like solar energy, biomass etc. without much change in the design. This system can be used to develop an Air Conditioner, Refrigerator or a Chiller.

Thermodynamic Analysis of Heat and Mass Transfer Enhancement for R134a-DMAC/CNT Vapour Absorption Refrigeration System

2014 ◽  
Vol 592-594 ◽  
pp. 1832-1836 ◽  
Author(s):  
A. Kathiravan ◽  
E. Karthikeyan ◽  
V. Mariappan ◽  
Chidambaram T. Muthiah
Keyword(s):  
Thermodynamic Analysis ◽  
Volume Concentration ◽  
Theoretical Study ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Transfer Enhancement ◽  
Mass Transfer Enhancement ◽  
Nano Fluid ◽  
Absorption Refrigeration System ◽  
Nano Fluids

The objective of this paper is to study thermodynamic analysis of R134a-DMAC and R134a-DMAC/CNT vapour absorption system and compare this both system performance. This investigation for R134a-DMAC is carried out based on the correlations available in the literature. The change of thermophysical properties for R134a-DMAC/CNT is predicted and is incorporated in the pure R134a-DMAC correlations. The analysis is carried for 1 kW evaporator capacity and effectiveness of solution heat exchanger is taken as 0.8. Variations in the performance parameters of the system with and without nano fluids are studied against various operating temperatures of generator, absorber and different volume concentration. The result of this theoretical study shows that co-efficient of performance (COP) of system with CNT nano fluid is improved as well as the absorber capacity also increased due to enhanced heat transfer of nano fluids. It also observed that the performance achieved by the pure R134a-DMAC at the elevated generator temperature could be achieved at low generator temperature using R134a-DMAC/CNT.

Modeling and Simulation of the Absorber of an Absorption Refrigeration System

2018 ◽  
Author(s):  
Leonardo Cavalheiro Martinez ◽  
Wellington Balmant ◽  
Iago Costa ◽  
Matias Nicolas Muñoz ◽  
Luiz Rigatti ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System
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