Ammonia–water absorption cycle on three-dimensional graphs – The Absorption 3D tool software

2012 ◽  
Vol 35 (7) ◽  
pp. 1958-1966
Author(s):  
Jacek Kasperski ◽  
Janusz Eichler
Keyword(s):  
Water Absorption ◽  
Three Dimensional ◽  
Ammonia Water ◽  
Absorption Cycle

Thermodynamic analysis of triple effect ammonia–water absorption compression (hybrid) cycle

2021 ◽  
pp. 095440892199568
Author(s):  
CP Jawahar
Keyword(s):  
Water Absorption ◽  
Energy Analysis ◽  
Cooling Capacity ◽  
Coefficient Of Performance ◽  
Working Fluid ◽  
Performance Parameters ◽  
Evaporator Temperature ◽  
Ammonia Water ◽  
Absorption Cycle ◽  
Hybrid Cycle

This paper presents the energy analysis of a triple effect absorption compression (hybrid) cycle employing ammonia water as working fluid. The performance parameters such as cooling capacity and coefficient of performance of the hybrid cycle is analyzed by varying the temperature of evaporator from −10 °C to 10 °C, absorber and condenser temperatures in first stage from 25 °C to 45 °C, degassing width in both the stages from 0.02 to 0.12 and is compared with the conventional triple effect absorption cycle. The results of the analysis show that the maximum cooling capacity attained in the hybrid cycle is 472.3 kW, at 10 °C evaporator temperature and first stage degassing width of 0.12. The coefficient of performance of the hybrid cycle is about 30 to 65% more than the coefficient of performance of conventional triple effect cycle.

scholarly journals Analysis and simulation of modified ammonia/water absorption cycle for power and cooling applications

2013 ◽  
Vol 8 (suppl 1) ◽  
pp. i19-i26 ◽  
Author(s):  
Dereje S. Ayou ◽  
Rajagopal Saravanan ◽  
Joan Carles Bruno ◽  
Alberto Coronas
Keyword(s):  
Water Absorption ◽  
Ammonia Water ◽  
Absorption Cycle

scholarly journals Simulation and comparison of combined ejector-absorption and single effect absorption refrigeration systems

2020 ◽  
Vol 307 ◽  
pp. 01008
Author(s):  
Nihel Ben Zid ◽  
Mohammed. El Ganaoui ◽  
Nejib Hajji
Keyword(s):  
Water Absorption ◽  
Absorption Refrigeration ◽  
Optimal Conditions ◽  
Entrainment Ratio ◽  
Ammonia Water ◽  
Flash Tank ◽  
Single Effect ◽  
Absorption Cycle

Refrigeration by absorption is gaining more and more importance nowadays especially in applications where the source of energy used in the generator is renewable. However the major problem of this type of refrigeration lies in the COP, which seems to be weaker than compression machines. The use of an ejector is one of the means that can help overcome this problem. In this work, we are interested in the ammonia-water absorption cycle comprising a gas-gas ejector interposed between the generator and the condenser. We suppose that adding a flash tank between the condenser and the evaporator could help improve the entrainment ratio of the ejector. Simulations using the Hysys software are performed in order to look for the optimal conditions for the work of this machine and to make a comparison in terms of performance with single effect cycles. Results showed a significant improvement in the COP and proved therefore that it has better performance than single effect cycles.

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