TY - GEN
T1 - Analysis of heat-driven combined cooling and desalination
AU - Alelyani, Sami M.
AU - Fette, Nicholas W.
AU - Stechel, Ellen
AU - Doron, Pinchas
AU - Phelan, Patrick
N1 - Publisher Copyright:
Copyright © 2016 by ASME.
PY - 2016
Y1 - 2016
N2 - This paper investigates the opportunities for integrating thermally driven cooling systems with thermally driven desalination systems via cascade of reject heat. Single- and double-stage ammonia-water (NH3-H2O) absorption refrigeration systems with multi-effect distillation (MED) are selected for this study based on technical limitations and practical considerations. Cooling capacity and hourly water production are calculated from thermodynamic properties of the working fluids at different operating conditions using simple models for each of the constituent systems. Additionally, the second law of thermodynamics is applied with the aim of examining the entropy generation of each component as well as the total exergy destruction of the entire system. The results indicate that the total exergy destruction of the combined systems, which consist of an MED unit driven by either a single- or double-stage NH3-H2O refrigeration system, decreases by an average of 55% compared to stand-alone NH3-H2O and MED systems. Relative to stand-alone systems, although water production decreases by 30% and 9% when an MED unit is integrated with single- and double-stage NH3-H2O absorption systems, respectively, cooling capacity remains unchanged for the double-stage NH3-H2O-MED system, and only decreases by 16% for the single-stage NH3-H2O-MED system.
AB - This paper investigates the opportunities for integrating thermally driven cooling systems with thermally driven desalination systems via cascade of reject heat. Single- and double-stage ammonia-water (NH3-H2O) absorption refrigeration systems with multi-effect distillation (MED) are selected for this study based on technical limitations and practical considerations. Cooling capacity and hourly water production are calculated from thermodynamic properties of the working fluids at different operating conditions using simple models for each of the constituent systems. Additionally, the second law of thermodynamics is applied with the aim of examining the entropy generation of each component as well as the total exergy destruction of the entire system. The results indicate that the total exergy destruction of the combined systems, which consist of an MED unit driven by either a single- or double-stage NH3-H2O refrigeration system, decreases by an average of 55% compared to stand-alone NH3-H2O and MED systems. Relative to stand-alone systems, although water production decreases by 30% and 9% when an MED unit is integrated with single- and double-stage NH3-H2O absorption systems, respectively, cooling capacity remains unchanged for the double-stage NH3-H2O-MED system, and only decreases by 16% for the single-stage NH3-H2O-MED system.
KW - Ammonia-water absorption refrigeration
KW - Integrated refrigeration and desalination system
KW - Multi-effect distillation
KW - Water desalination
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U2 - 10.1115/IMECE2016-65390
DO - 10.1115/IMECE2016-65390
M3 - Conference contribution
AN - SCOPUS:85021839958
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Energy
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2016 International Mechanical Engineering Congress and Exposition, IMECE 2016
Y2 - 11 November 2016 through 17 November 2016
ER -