Techno-economic analysis of combined ammonia-water absorption refrigeration and desalination

被引:60
|
作者
Alelyani, Sami M. [1 ]
Fette, Nicholas W. [1 ]
Stechel, Ellen B. [2 ]
Doron, Pinchas [3 ]
Phelan, Patrick E. [1 ]
机构
[1] Arizona State Univ, Sch Engn Matter Transport & Energy, 501 E Tyler Mall,ECG303, Tempe, AZ 85287 USA
[2] Arizona State Univ, LightWorks, Tempe, AZ 85287 USA
[3] AORA Solar Ltd, Rehovot, Central Distric, Israel
关键词
Ammonia-water absorption refrigeration; Multi-effect distillation; Integrated refrigeration and desalination system; Water desalination; EFFICIENCY COMBINED DESALINATION; MULTIOBJECTIVE OPTIMIZATION; HEAT-PUMPS; SYSTEM; CYCLE; DISTILLATION; SEAWATER; ENERGY; FEASIBILITY; ENVIRONMENT;
D O I
10.1016/j.enconman.2017.03.085
中图分类号
O414.1 [热力学];
学科分类号
摘要
This paper investigates the opportunities for integrating single- and double-stage ammonia-water (NH3-H2O) absorption refrigeration systems with multi-effect distillation (MED) via cascade of rejected heat. 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 total exergy destruction of the entire stand-alone and combined systems. A cost model is developed as well in order to estimate the total annual cost of the system and the unit production cost (UPC) of both fresh water and cooling. 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. Moreover, the UPC of cooling decreases significantly by an average of 43% for both coupled systems, whereas the UPC of the produced water increases by only 19% and 3% for single- and double-stage NH3-H2O-MED systems, respectively. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:493 / 504
页数:12
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