Exergy Analysis of Various Absorption Heat Transformer Systems Using Classical and Modi¯ed Gouy–Stodola Equation

다국어 초록 (Multilingual Abstract)

In the present study, performance evaluation of three di®erent con¯gurations of absorption heattransformer (AHT) is carried out by supplying the waste heat of same mass and same temperature;and exergy analysis is done using both the classical and modi¯ed Gouy–stodola equation.
For this a mathematical model is developed for all the three arrangements in EngineeringEquation Solver. Water–lithium bromide is used as a working pair. The results of exergy destructionwith classical and modi¯ed Gouy–stodola equation are compared for di®erent systems.
Further various operating parameters are varied to predict the performance of the systems on thebasis of second law analysis. The result showed that the amount of hot °uid produced in absorberis more for system 3 as compared to other con¯gurations. The irreversibility calculated by themodi¯ed approach comes out to be 25.78%, 23.60%, and 23.45% more than the exergy destructionobtained by the classical approach in the three cases, respectively. Thus, there is a need to employthe modi¯ed approach of Gouy–Stodola equation for calculating the real irreversibility whichhelps in predicting the scope of improvement and the performance of the system more accurately

참고문헌 (Reference)

1 I. M. Ismail, "Upgrading of heat through absorption heat transformers" 18 : 439-446, 1995

2 D. Zebbar, "Thermodynamic optimization of an absorption heat transformer" 35 : 1393-1401, 2012

3 R. Gomri, "Thermal seawater desalination: Possibilities of using single e®ect and double e®ect absorption heat transformer systems" 253 : 112-118, 2010

4 M. J. Lampinen, "Theory of e®ective heat absorbing and heat emitting temperatures in entropy and exergy analysis with applications to °ow systems and combustion process" 31 : 257-291, 2006

5 J. M. George, "Srinivasa Murthy, Experiments on a vapour absorption heat transformer" 16 : 107-119, 1993

6 R. J. Romero, "Rodriguez-Martinez, Optimal water puri¯cation using low grade waste heat in an absorption heat transformer" 220 : 506-513, 2008

7 Rosa María Barragán Reyes, "Performance modelling of single and double absorption heat transformers" 한국물리학회 10 (10): 244-248, 2010

8 X. Zhang, "Performance analysis of the single-stage absorption heat transformer using a new working pair composed of ionic liquid and water" 37 : 129-135, 2012

9 J. Yin, "Performance analysis of an AHT with di®erent working °uid combinations" 67 : 281-292, 2000

10 J. Yin, "Performance analysis of an AHT with di®erent working °uid combinations" 67 : 281-292, 2000

11 R. Best, "Modelling of single-stage and advanced absorption heat transformers operating with the water/carrol mixture" 17 : 1111-1122, 1997

12 S. Sekar, "Experimental studies on absorption heat transformer coupled distillation system" 274 : 292-301, 2011

13 W. Rivera, "Exergy analysis of an experimental single-stage heat transformer operating with single water/lithium bromide and using additives (1-octanol and 2-ethyl-1-hexanol)" 31 : 3526-3532, 2011

14 V. Jain, "Exergy analysis of a vapour compression-absorption cascaded refrigeration system using modi¯ed Guoy–Stodala equation" 15 (15): 1-23, 2014

15 H. Holmberg, "Determination of the real power loss for a steam turbine" 11 : 702-712, 2009

16 X. Ma, "Application of absorption heat transformer to recover waste heat from a synthetic rubber plant" 23 : 797-806, 2003

17 A. Huicochea, "Analysis of the behavior of an experimental absorption heat transformer for water puri¯cation for di®erent mass °ux rates in the generator" 52 : 38-45, 2013

18 I. Horuz, "Absorption heat transformers and an industrial application" 35 : 2175-2181, 2010