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T. Goel,G. SACHDEVA 대한설비공학회 2015 International Journal Of Air-Conditioning and Refr Vol.23 No.1
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
Kodack, D. P.,Chung, E.,Yamashita, H.,Incio, J.,Duyverman, A. M. M. J.,Song, Y.,Farrar, C. T.,Huang, Y.,Ager, E.,Kamoun, W.,Goel, S.,Snuderl, M.,Lussiez, A.,Hiddingh, L.,Mahmood, S.,Tannous, B. A.,Eic Proceedings of the National Academy of Sciences 2012 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.109 No.45