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Application of “Sink & Source” and “Stream wise” Methods for Exergy Analysis of Two MED Desalination Systems | ||
| Journal of Chemical and Petroleum Engineering | ||
| مقاله 8، دوره 50، شماره 2، اردیبهشت 2017، صفحه 61-72 اصل مقاله (1.25 M) | ||
| نوع مقاله: Original Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jchpe.2017.60506 | ||
| نویسندگان | ||
| Hossein Ahamdi Danesh-Ashtiani* ؛ Hamid Abdollah-Zargar | ||
| Islamic Azad University of South Tehran Branch. | ||
| چکیده | ||
| Utilization of fossil fuel for supplying of requires energy of desalination systems is common. On the other hand, solar energy is one of the high-grade energies in the world that can be found specifically in hot weather places. Therefore, utilization of solar energy for operation of desalination systems will reduce greenhouse gases and is a good alternative way. Common exergy analysis method (stream wise) uses input and output exergy of streams to calculate the efficiency and exergy loss. Another exergy analysis method, named “Sink & Source”, is illustrated in the present study. The Stream wise method usually computes efficiency of systems as higher than a reliable value. For example, the computed exergy efficiency of presented high capacity MED desalination system is 88.63%, while this value is estimated about 1.04% from the new method. The uselessness of the traditional method for analyzing presented low-capacity MED desalination system is also shown. For example, the computed exergy efficiency of a low-capacity desalination system was 97.51%, while a value of 42.57% was obtained from the new method. A solar field and a solar heating system are suggested for presented high capacity and low capacity MED, respectively. Furthermore, an economic analysis of afore said desalination system is presented. | ||
| کلیدواژه‌ها | ||
| Exergy analysis method؛ Solar energy؛ MED desalination system؛ Stream wise؛ Sink & source | ||
| مراجع | ||
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